1. Introduction The Devonian-Carboniferous Boundary (DCB) is associated with one of the most severe biocrises through the Phanereozoic, namely the Hangenberg Event or Hangenberg Biocrisis. Long considered as a second-order extinction event, this biocrisis is now regarded as equally severe as the global Late Frasnian Kellwasser Biocrisis as it led c. 45% of marine genera to extinction and wiped out entire ecosystems at the end of the Famennian Age (Becker et al., 2016 and references within). Research traditionally focused on the Devonian-Carboniferous Boundary, i.e. for the search for a basal Carboniferous GSSP and a biostratigraphic scheme, but high resolution data on extinctions all through the Hangenberg Biocrisis are still a work in progress, and mainly concern the marine realm (see the synopsis by Kaiser et al., 2015 and references within). What happened on continents is less clear. The latest Famennian flora is traditionally seen as a homogeneous cover of “Archaeopteridalean forests” (Fairon-Demaret, 1986; Jarvis, 1990) that is associated to the homogeneous “lepidophyta palynoflora” (Streel et al., 2000) typical of that interval. This assemblage suffered from the biocrisis but did not become extinct before the DCB (Streel & Marshall, 2006). Consequently, there is a marked time shift between the main extinction events in the marine and terrestrial realms, which points to clear differences on the effects of the biocrisis between both realms (e.g. McGhee, 2013). Timing of t
1. 泥盆纪-石炭纪界线(DCB)与显元生代最严重的生物危机之一，即Hangenberg事件或Hangenberg生物危机有关。长期以来被认为是二级灭绝事件，这次生物危机现在被认为与全球晚弗拉斯尼亚Kellwasser生物危机同样严重，因为它导致了45%的海洋物种灭绝，并在famenian时代结束时摧毁了整个生态系统(Becker et al.， 2016和内部参考文献)。传统上的研究主要集中在泥盆纪-石炭纪边界，即寻找基底石炭纪GSSP和生物地层方案，但贯穿Hangenberg生物危机的高分辨率灭绝数据仍在进行中，主要涉及海洋领域(参见Kaiser et al.， 2015的摘要和其中的参考文献)。大陆上发生了什么就不太清楚了。最新的法门菌群传统上被认为是“始祖林”的同质覆盖(Fairon-Demaret, 1986;Jarvis, 1990)，这与该区间典型的同质“孢芽鳞片植物”(Streel et al.， 2000)有关。这种组合遭受了生物危机，但在DCB之前并没有灭绝(Streel & Marshall, 2006)。因此，海洋和陆地领域的主要灭绝事件之间存在明显的时间偏移，这表明两个领域之间生物危机的影响存在明显差异(例如McGhee, 2013)。t的定时
{"title":"Disrupted continental environments around the Devonian-Carboniferous Boundary: introduction of the tener event","authors":"Cyrille Prestianni, Marie Sautois, J. Denayer","doi":"10.20341/GB.2016.013","DOIUrl":"https://doi.org/10.20341/GB.2016.013","url":null,"abstract":"1. Introduction The Devonian-Carboniferous Boundary (DCB) is associated with one of the most severe biocrises through the Phanereozoic, namely the Hangenberg Event or Hangenberg Biocrisis. Long considered as a second-order extinction event, this biocrisis is now regarded as equally severe as the global Late Frasnian Kellwasser Biocrisis as it led c. 45% of marine genera to extinction and wiped out entire ecosystems at the end of the Famennian Age (Becker et al., 2016 and references within). Research traditionally focused on the Devonian-Carboniferous Boundary, i.e. for the search for a basal Carboniferous GSSP and a biostratigraphic scheme, but high resolution data on extinctions all through the Hangenberg Biocrisis are still a work in progress, and mainly concern the marine realm (see the synopsis by Kaiser et al., 2015 and references within). What happened on continents is less clear. The latest Famennian flora is traditionally seen as a homogeneous cover of “Archaeopteridalean forests” (Fairon-Demaret, 1986; Jarvis, 1990) that is associated to the homogeneous “lepidophyta palynoflora” (Streel et al., 2000) typical of that interval. This assemblage suffered from the biocrisis but did not become extinct before the DCB (Streel & Marshall, 2006). Consequently, there is a marked time shift between the main extinction events in the marine and terrestrial realms, which points to clear differences on the effects of the biocrisis between both realms (e.g. McGhee, 2013). Timing of t","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86572605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Rodríguez, I. Said, I. Somerville, P. Cózar, I. Coronado
1. IntroductionThe Carboniferous stratigraphic successions in Adarouch (central Morocco) range in age from the middle Visean up to the Bashkirian (Fig. 1). They are composed of both siliciclastic and carbonate rocks that occur in several faulted blocks (Berkhli, 1999; Vachard et al., 2006) and show excellent exposures that are prolific in diverse fossil groups such as foraminiferans, algae, brachiopods, conodonts, bryozoans, crinoids and corals. The description of the Serpukhovian coral assemblages from that area and their biostratigraphic, palaeogeographic and palaeoecologic implications is the main aim of this paper, which is presented as an homage to Eddy Poty, who studied the Mississippian corals during the last 40 years, providing much valuable data to our knowledge of both rugose corals and Carboniferous rocks. The first reference to the presence of rugose corals in the Adarouch area was provided by Termier & Termier (1950), who mentioned the Tizra outcrops at Adarouch and described Dibunophyllum vaughani from that locality. Termier et al. (1975) regarded the Adarouch outcrops to range in age from the Visean to Serpukhovian. Later, Berkhli (1999) provided detailed stratigraphical and palaeontological data and defined three depositional sequences in the Carboniferous of Adarouch. He studied the Carboniferous stratigraphy of the Tizra Hills and defined the Oued Amhares Formation at the base, the Tizra and Mouarhaz formations in the middle and the Akerchi Formation at the
1. Adarouch(摩洛哥中部)石炭系地层序列的年龄范围从中Visean到Bashkirian(图1)。它们由出现在几个断块中的硅碎屑岩和碳酸盐岩组成(Berkhli, 1999;Vachard et al.， 2006)，并展示了在不同的化石类群(如有孔虫、藻类、腕足动物、牙形刺、苔藓虫、海鲷和珊瑚)中丰富的出色曝光。本文的主要目的是描述该地区的Serpukhovian珊瑚组合及其生物地层学，古地理和古生态学意义，并向Eddy Poty致敬，Eddy Poty在过去40年里研究了密西比珊瑚，为我们提供了许多有价值的数据，无论是红珊瑚还是石炭系岩石。Termier & Termier(1950)首次提到了Adarouch地区存在的红珊瑚，他们提到了Adarouch的Tizra露头，并描述了该地区的Dibunophyllum vaughani。Termier et al.(1975)认为Adarouch露头的年龄范围从Visean到Serpukhovian。后来，Berkhli(1999)提供了详细的地层学和古生物学资料，并确定了阿达鲁奇石炭世的三个沉积层序。他对提兹拉山石炭纪地层进行了研究，确定了底部为Oued Amhares组，中部为Tizra组和Mouarhaz组，顶部为Akerchi组
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1. IntroductionIn the Donets Basin (Ukraine) the Tournaisian rocks are commonly fossiliferous carbonates. A detailed lithostratigraphic and biostratigraphic division has been achieved over the last decades (Aizenverg et al., 1963; Poletaev et al., 1990; Poletaev et al., 2011). Rugose and tabulate corals are widely distributed in some part of the sections. M.I. Lebedev and K.I. Lisitzin first identified Tournaisian corals of the Donbas early in the 20th century and used these fossils as guides to divide the sections and to correlate them with England and Belgium. I.I. Gorsky and V.D. Fomichev studied the Early Carboniferous corals of the Donets Basin during the 1920’s, but their studies have never been completed, and their collections were lost. Only brief and limited results of these studies have been published by Fomichev (1953) and Vassilyuk (1960). Vassilyuk studied the Early Carboniferous corals of the Donets Basin in detail and has proposed a coral zonation for the Lower Carboniferous strata (Poletaev et al., 1990). The stratigraphic distribution of corals taxa in the Tournaisian strata is highly heterogeneous. Most corals are found in the middle part of the Tournaisian (C1tc Zone) (Ogar, 2010). In the lower and upper parts of the Tournaisian, corals are much rarer. Unexpected new findings are reported in this paper, together with the redescription of specimens from Vassiljuk’s collection.2. SettingsThe southern part of the Donets Basin is the only area in Ukraine where
1. 在顿涅茨盆地(乌克兰)，图尔奈岩通常是化石碳酸盐。在过去的几十年里，已经完成了详细的岩石地层和生物地层划分(Aizenverg et al.， 1963;Poletaev et al.， 1990;Poletaev et al.， 2011)。斑纹珊瑚和表纹珊瑚广泛分布于部分剖面。M.I. Lebedev和K.I. Lisitzin在20世纪早期首次发现了顿巴斯的Tournaisian珊瑚，并利用这些化石作为划分部分的指南，并将它们与英格兰和比利时联系起来。I.I. Gorsky和V.D. Fomichev在20世纪20年代研究了顿涅茨盆地的早石炭纪珊瑚，但他们的研究从未完成，他们的藏品也丢失了。Fomichev(1953)和Vassilyuk(1960)只发表了这些研究的简短和有限的结果。Vassilyuk详细研究了顿涅茨盆地早石炭世的珊瑚，并提出了下石炭世地层的珊瑚分带(Poletaev et al.， 1990)。图尔尼斯地层中珊瑚类群的地层分布具有高度的不均匀性。大多数珊瑚位于Tournaisian (C1tc带)的中部(Ogar, 2010)。在Tournaisian的下部和上部，珊瑚要稀有得多。本文报道了意想不到的新发现，并对Vassiljuk收集的标本进行了重新描述。顿涅茨盆地的南部是乌克兰唯一一个
{"title":"New Rugose corals and refinements of the Tournaisian biostratigraphy of the Donets Basin (Ukraine)","authors":"V. Ogar","doi":"10.20341/GB.2016.007","DOIUrl":"https://doi.org/10.20341/GB.2016.007","url":null,"abstract":"1. IntroductionIn the Donets Basin (Ukraine) the Tournaisian rocks are commonly fossiliferous carbonates. A detailed lithostratigraphic and biostratigraphic division has been achieved over the last decades (Aizenverg et al., 1963; Poletaev et al., 1990; Poletaev et al., 2011). Rugose and tabulate corals are widely distributed in some part of the sections. M.I. Lebedev and K.I. Lisitzin first identified Tournaisian corals of the Donbas early in the 20th century and used these fossils as guides to divide the sections and to correlate them with England and Belgium. I.I. Gorsky and V.D. Fomichev studied the Early Carboniferous corals of the Donets Basin during the 1920’s, but their studies have never been completed, and their collections were lost. Only brief and limited results of these studies have been published by Fomichev (1953) and Vassilyuk (1960). Vassilyuk studied the Early Carboniferous corals of the Donets Basin in detail and has proposed a coral zonation for the Lower Carboniferous strata (Poletaev et al., 1990). The stratigraphic distribution of corals taxa in the Tournaisian strata is highly heterogeneous. Most corals are found in the middle part of the Tournaisian (C1tc Zone) (Ogar, 2010). In the lower and upper parts of the Tournaisian, corals are much rarer. Unexpected new findings are reported in this paper, together with the redescription of specimens from Vassiljuk’s collection.2. SettingsThe southern part of the Donets Basin is the only area in Ukraine where","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84251722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. Introduction As noted by several authors (e.g. Gosselet, 1857; Cooper, 1954; Conil et al., 1986; Simakov, 1990; Mottequin et al., 2014), radiations were recorded among several brachiopod orders during the uppermost Famennian (Upper Devonian). Numerous productide, spiriferide, spiriferinide and rhynchonellide genera first appeared during this interval and are characterized by morphological features heralding the Mississippian brachiopod faunas. Brice et al. (2013) recently stressed that the brachiopod data related to the uppermost Famennian of the Avesnois (north-western France) (Fig. 1), which is the historical type area of the Strunian (Streel et al., 2006), strongly need to be updated in order to detail the consequences of the Hangenberg Crisis (Kaiser et al., 2011, 2015). In this area, the last comprehensive study on uppermost Famennian brachiopods dates back to Dehee (1929). His study, based on Gosselet, Delepine, Carpentier and Dehee’s material, is poorly stratigraphically constrained and some elements of the fauna described by Dehee (1929), such as the atrypides, were not obtained from the uppermost Famennian (Copper, 1986). The brachiopods were subsequently and partly revised by Vandercammen (1956), Legrand-Blain (1991), Brice (1997), Nicollin (2004, 2008) and Brice et al. (2013). The situation is more critical in southern Belgium where the mixed carbonate-siliciclastic Strunian facies are relatively similar to those occurring in the Avesnois. In Belgium, the vast m
1. 正如几位作者(如Gosselet, 1857;库珀,1954;Conil et al.， 1986;Simakov, 1990;Mottequin et al.， 2014)，在上古法门纪(上泥盆世)的几个腕足目中记录了辐射。在这一时期首次出现了大量的产品属、spiriferide属、spiriferinide属和rhynchonellide属，其形态特征预示着密西西比系腕足动物群的形成。Brice et al.(2013)最近强调，与Avesnois(法国西北部)最上层法门尼期相关的腕足动物数据(图1)是Strunian的历史类型区域(Streel et al.， 2006)，迫切需要更新，以详细说明Hangenberg危机的后果(Kaiser et al.， 2011, 2015)。在这一地区，最后一次对上法门系腕足动物的全面研究要追溯到Dehee(1929)。他的研究以Gosselet、Delepine、Carpentier和Dehee的材料为基础，缺乏地层学上的限制，而且Dehee(1929)所描述的动物群的一些元素，如atrypides，并不是从法门纪的最上层获得的(Copper, 1986)。随后，Vandercammen(1956)、legrande - blain(1991)、Brice(1997)、Nicollin(2004、2008)和Brice et al.(2013)对腕足动物进行了部分修订。比利时南部的情况更为严重，那里的碳酸盐-硅屑混合相与阿维斯诺伊斯的相相对相似。在比利时，巨大的森林
{"title":"Upper and uppermost Famennian (Devonian) brachiopods from north-western France (Avesnois) and southern Belgium","authors":"Bernard Mottequin, D. Brice","doi":"10.20341/GB.2016.004","DOIUrl":"https://doi.org/10.20341/GB.2016.004","url":null,"abstract":"1. Introduction As noted by several authors (e.g. Gosselet, 1857; Cooper, 1954; Conil et al., 1986; Simakov, 1990; Mottequin et al., 2014), radiations were recorded among several brachiopod orders during the uppermost Famennian (Upper Devonian). Numerous productide, spiriferide, spiriferinide and rhynchonellide genera first appeared during this interval and are characterized by morphological features heralding the Mississippian brachiopod faunas. Brice et al. (2013) recently stressed that the brachiopod data related to the uppermost Famennian of the Avesnois (north-western France) (Fig. 1), which is the historical type area of the Strunian (Streel et al., 2006), strongly need to be updated in order to detail the consequences of the Hangenberg Crisis (Kaiser et al., 2011, 2015). In this area, the last comprehensive study on uppermost Famennian brachiopods dates back to Dehee (1929). His study, based on Gosselet, Delepine, Carpentier and Dehee’s material, is poorly stratigraphically constrained and some elements of the fauna described by Dehee (1929), such as the atrypides, were not obtained from the uppermost Famennian (Copper, 1986). The brachiopods were subsequently and partly revised by Vandercammen (1956), Legrand-Blain (1991), Brice (1997), Nicollin (2004, 2008) and Brice et al. (2013). The situation is more critical in southern Belgium where the mixed carbonate-siliciclastic Strunian facies are relatively similar to those occurring in the Avesnois. In Belgium, the vast m","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80304531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. IntroductionStorm beds are distinct facies criteria on shelves and ramps, which are generated by storm winds, such as cyclones and hurricanes in tropical latitudes and blizzards in middle and high latitudes (Tucker & Wright, 1990; Flugel, 2004). Ager (1973) defined storm beds as tempestites that are commonly characterized by sharp and erosional base, internal structures including accumulations of shells, graded and flat bedding and parallel and cross lamination, and ripple bedding and burrowing presented at the top part (Aigner, 1985; Flugel, 2004; Dattilo et al., 2012). Tempestites are abundant and widely distributed in carbonate environments during the Phanerozoic (e.g. Einsele & Seilacher, 1982; Flugel, 2004). The sedimentary patterns and biotic distributions of tempestites could provide important information in aspects of their depositional process, palaeoenvironment, palaeogeographical location and even stratigraphic comparison (Johnson, 1989; Lehman & Pope, 1989; Flugel, 2004; Jin et al., 2013). Storm shell beds, which are one common type of tempestites and featured by accumulation of shells, were documented during the icehouse periods of the late Ordovician (Lehman & Pope, 1989; Davis, 1999; Jin et al., 2013), early Silurian (Johnson, 1989; Li & Rong, 2007; Jin, 2008) and early Carboniferous (Jeffery & Aigner, 1982; Butts, 2005) and during greenhouse climate, as in the middle Ordovician (McFarland et al., 1999), late Permian (Simoes & Kowalewski, 1998), early Triass
{"title":"Gigantoproductid brachiopod storm shell beds in the Mississippian of South China: implications for their palaeoenvironmental and palaeogeographical significances","authors":"L. Yao, M. Aretz, Yue Li, Xiangdong Wang","doi":"10.20341/GB.2015.021","DOIUrl":"https://doi.org/10.20341/GB.2015.021","url":null,"abstract":"1. IntroductionStorm beds are distinct facies criteria on shelves and ramps, which are generated by storm winds, such as cyclones and hurricanes in tropical latitudes and blizzards in middle and high latitudes (Tucker & Wright, 1990; Flugel, 2004). Ager (1973) defined storm beds as tempestites that are commonly characterized by sharp and erosional base, internal structures including accumulations of shells, graded and flat bedding and parallel and cross lamination, and ripple bedding and burrowing presented at the top part (Aigner, 1985; Flugel, 2004; Dattilo et al., 2012). Tempestites are abundant and widely distributed in carbonate environments during the Phanerozoic (e.g. Einsele & Seilacher, 1982; Flugel, 2004). The sedimentary patterns and biotic distributions of tempestites could provide important information in aspects of their depositional process, palaeoenvironment, palaeogeographical location and even stratigraphic comparison (Johnson, 1989; Lehman & Pope, 1989; Flugel, 2004; Jin et al., 2013). Storm shell beds, which are one common type of tempestites and featured by accumulation of shells, were documented during the icehouse periods of the late Ordovician (Lehman & Pope, 1989; Davis, 1999; Jin et al., 2013), early Silurian (Johnson, 1989; Li & Rong, 2007; Jin, 2008) and early Carboniferous (Jeffery & Aigner, 1982; Butts, 2005) and during greenhouse climate, as in the middle Ordovician (McFarland et al., 1999), late Permian (Simoes & Kowalewski, 1998), early Triass","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89316900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. IntroductionThe Palaeozoic superorder Rugosa passed through several crises before the final extinction at the Permian–Triassic boundary. The most important one, the global Upper Kellwasser Event at the Frasnian–Famennian boundary, led to the disappearance of all coral reefs; they reappeared during top-Famennian times (Strunian). For a long period, the coral world of the Famennian (both photic and aphotic zones) was a terra incognita – but this changed surprisingly after the monograph of Polish ahermatypic Famennian Rugosa (Rozkowska, 1969), and with the discovery of similar faunas mainly in Germany and Morocco, and also in northern China (Liao & Cai, 1987; Cai, 1988; Wu & Liao, 1988; Guo 1990). Knowledge about Famennian shallow water Rugosa increased more slowly: especially through Sorauf (1992: unique first upper Famennian, though pre-Strunian Rugosa fauna from North America) and Berkowski (2002: first upper Famennian, also pre-Strunian survivors of Frasnian Phillipsastreidae in Poland). Unfortunately, up to now there still are no certain Rugosa occurrences from the basal Famennian (Lower, Middle, and Upper Palmatolepis triangularis Zones, perhaps also Lower Palmatolepis crepida Zone). The only one Rugosa, which I could collect from the Middle Palmatolepis triangularis Zone, together with Nephranops incisus (Roemer, 1866), was an undeterminable ampleximorph taxon from Rubeland in the German Harz Mts.At present, the Upper Givetian and the Frasnian ahermatypic Rugosa are th
{"title":"Review of some Frasnian ahermatypic coral localities from Germany and description of a new genus Spinaxon (Anthozoa, Rugosa, Upper Devonian)","authors":"D. Weyer","doi":"10.20341/GB.2015.020","DOIUrl":"https://doi.org/10.20341/GB.2015.020","url":null,"abstract":"1. IntroductionThe Palaeozoic superorder Rugosa passed through several crises before the final extinction at the Permian–Triassic boundary. The most important one, the global Upper Kellwasser Event at the Frasnian–Famennian boundary, led to the disappearance of all coral reefs; they reappeared during top-Famennian times (Strunian). For a long period, the coral world of the Famennian (both photic and aphotic zones) was a terra incognita – but this changed surprisingly after the monograph of Polish ahermatypic Famennian Rugosa (Rozkowska, 1969), and with the discovery of similar faunas mainly in Germany and Morocco, and also in northern China (Liao & Cai, 1987; Cai, 1988; Wu & Liao, 1988; Guo 1990). Knowledge about Famennian shallow water Rugosa increased more slowly: especially through Sorauf (1992: unique first upper Famennian, though pre-Strunian Rugosa fauna from North America) and Berkowski (2002: first upper Famennian, also pre-Strunian survivors of Frasnian Phillipsastreidae in Poland). Unfortunately, up to now there still are no certain Rugosa occurrences from the basal Famennian (Lower, Middle, and Upper Palmatolepis triangularis Zones, perhaps also Lower Palmatolepis crepida Zone). The only one Rugosa, which I could collect from the Middle Palmatolepis triangularis Zone, together with Nephranops incisus (Roemer, 1866), was an undeterminable ampleximorph taxon from Rubeland in the German Harz Mts.At present, the Upper Givetian and the Frasnian ahermatypic Rugosa are th","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89972641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. IntroductionWith the beginning of geological and stratigraphical research in Western Europe in the early 19th century, two main marine facies realms have been identified in the lower Carboniferous (Mississippian) strata based on specific lithologies and organic content. The Carboniferous Limestone or Kohlenkalk represents the shallow-water platform facies and was first identified in the British Isles and Southern Belgium. The Kulm is equivalent of the deeper water, basinal facies of the German Rhenohercynian Basin (Fig. 1). Both names are still widely in use and especially the Kulm has been exported outside its regional and stratigraphical context.Figure 1. Localisation of the main outcrops of Kulm Facies in the framework of Variscan Europe. The attribution of the regions 5-6 in the southern Variscides is disputable. Kulm deposits in Variscan massifs included in Alpine mountain chains (e.g. Betic Cordillera) have been omitted except for the Pyrenees. The division into large tectonic units is from Franke (2014).One of these examples is found in southwest France. Here, south of the Massif Central, the remnants of a Mississippian foreland basin are exposed in the Montagne Noire, the Mouthoumet Massif and the Pyrenees (Fig. 1). The best-exposed and most complete succession is found in the Montagne Noire (Figs 1, 2). It is the aim of the paper to summarize the currently available data on the Kulm Facies of that region, to discuss a depositional model, to place the succession in
{"title":"The Kulm Facies of the Montagne Noire (Mississippian, southern France)","authors":"M. Aretz","doi":"10.20341/GB.2015.018","DOIUrl":"https://doi.org/10.20341/GB.2015.018","url":null,"abstract":"1. IntroductionWith the beginning of geological and stratigraphical research in Western Europe in the early 19th century, two main marine facies realms have been identified in the lower Carboniferous (Mississippian) strata based on specific lithologies and organic content. The Carboniferous Limestone or Kohlenkalk represents the shallow-water platform facies and was first identified in the British Isles and Southern Belgium. The Kulm is equivalent of the deeper water, basinal facies of the German Rhenohercynian Basin (Fig. 1). Both names are still widely in use and especially the Kulm has been exported outside its regional and stratigraphical context.Figure 1. Localisation of the main outcrops of Kulm Facies in the framework of Variscan Europe. The attribution of the regions 5-6 in the southern Variscides is disputable. Kulm deposits in Variscan massifs included in Alpine mountain chains (e.g. Betic Cordillera) have been omitted except for the Pyrenees. The division into large tectonic units is from Franke (2014).One of these examples is found in southwest France. Here, south of the Massif Central, the remnants of a Mississippian foreland basin are exposed in the Montagne Noire, the Mouthoumet Massif and the Pyrenees (Fig. 1). The best-exposed and most complete succession is found in the Montagne Noire (Figs 1, 2). It is the aim of the paper to summarize the currently available data on the Kulm Facies of that region, to discuss a depositional model, to place the succession in","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84571156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. IntroductionThis work serves as conclusion for the revision of massive rugose corals belonging to the family Phillipsastreidae Roemer, 1883 and occurring in the Upper Frasnian of Belgium. The diverse species of Frechastraea Scrutton, 1968 have been investigated in detail by Coen-Aubert (2012, 2015). As for Phillipsastrea D’Orbigny, 1849, P. falsa Coen-Aubert, 1987 and P. ranciae Coen-Aubert, 1987 were described by Coen-Aubert (1987) and P. conili Tsien, 1978 was studied by Coen-Aubert (1994). The present paper is concerned with two pseudocerioid species like Frechastraea, but with larger corallites, which have been previously ascribed to Phillipsastrea, but which are herein assigned to the new genus Potyphyllum based on Cyathophyllum ananas Goldfuss, 1826 as type species. Most Belgian occurrences of Potyphyllum ananas and P. veserense (Coen-Aubert, 1974) characterize the Upper Palmatolepis rhenana conodont Zone. As mentioned by Coen-Aubert (2012, 2015), the base of the Upper Frasnian has been fixed by the Subcommission on Devonian Stratigraphy, at the entry of the conodont Palmatolepis semichatovae. In Belgium, the entry of P. semichatovae is observed within the Lower Palmatolepis rhenana Zone, together with the first occurrence of Ancyrognathus triangularis whereas the massive rugose coral Frechastraea coeni Coen-Aubert, 2012 can be considered as an excellent marker for the base of the Upper Frasnian. As it is explained by Coen-Aubert (2015), the expression Namur Basin is
{"title":"Potyphyllum, a new phillipsastreid genus of rugose corals in the Upper Frasnian of Belgium with precisions about the age of the Petit-Mont Member","authors":"M. Coen-Aubert","doi":"10.20341/GB.2015.016","DOIUrl":"https://doi.org/10.20341/GB.2015.016","url":null,"abstract":"1. IntroductionThis work serves as conclusion for the revision of massive rugose corals belonging to the family Phillipsastreidae Roemer, 1883 and occurring in the Upper Frasnian of Belgium. The diverse species of Frechastraea Scrutton, 1968 have been investigated in detail by Coen-Aubert (2012, 2015). As for Phillipsastrea D’Orbigny, 1849, P. falsa Coen-Aubert, 1987 and P. ranciae Coen-Aubert, 1987 were described by Coen-Aubert (1987) and P. conili Tsien, 1978 was studied by Coen-Aubert (1994). The present paper is concerned with two pseudocerioid species like Frechastraea, but with larger corallites, which have been previously ascribed to Phillipsastrea, but which are herein assigned to the new genus Potyphyllum based on Cyathophyllum ananas Goldfuss, 1826 as type species. Most Belgian occurrences of Potyphyllum ananas and P. veserense (Coen-Aubert, 1974) characterize the Upper Palmatolepis rhenana conodont Zone. As mentioned by Coen-Aubert (2012, 2015), the base of the Upper Frasnian has been fixed by the Subcommission on Devonian Stratigraphy, at the entry of the conodont Palmatolepis semichatovae. In Belgium, the entry of P. semichatovae is observed within the Lower Palmatolepis rhenana Zone, together with the first occurrence of Ancyrognathus triangularis whereas the massive rugose coral Frechastraea coeni Coen-Aubert, 2012 can be considered as an excellent marker for the base of the Upper Frasnian. As it is explained by Coen-Aubert (2015), the expression Namur Basin is","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76622425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Denayer, M. Aretz, Laurent Barchy, Emmanuel Chevalier, V. Fischer, L. Hance, J. Marion, Bernard Mottequin
‘Generalist’ is a qualifying word that best describes Edouard – ‘Eddy’ – Poty in term of knowledge. He is not just a well-known palaeontologist. Passionate in all branches of geology, he developed an exceptional background and became one of the very few feeling comfortable out of his area of expertise and capable of seeing the bridges connecting field observations. His research and publications do not necessarily reflect his wide knowledge but those who have or have had the chance to work with him know that Eddy is a living encyclopedia. Moreover, his interest largely crosses over the borders of geology and he can with erudition discuss archaeology, history, architecture, volcanoes, anthropology, literature, cuisine and wine! To understand the man, let us visit his career.Born in 1949 in Seraing, near Liege in Belgium, the young Eddy quickly found his interest in fossils after he discovered brachiopods in the excavation made for the construction of a bridge in Esneux. His first fossils… and the beginning of a life-long passion for geology. During his childhood and teenage years, he used to search for fossils and minerals while on holiday with his parents, but also around Liege. In 1967, he entered the University of Liege to study geology (at that time ‘Geological and Mineralogical Sciences’) and learned from Prof. Belliere, Michot and Ubaghs among others. Four years later he presented his master’s thesis on Visean corals. His scientific career was not yet cast because militar
{"title":"Edouard Poty: a bio- and bibliography","authors":"J. Denayer, M. Aretz, Laurent Barchy, Emmanuel Chevalier, V. Fischer, L. Hance, J. Marion, Bernard Mottequin","doi":"10.20341/GB.2016.001","DOIUrl":"https://doi.org/10.20341/GB.2016.001","url":null,"abstract":"‘Generalist’ is a qualifying word that best describes Edouard – ‘Eddy’ – Poty in term of knowledge. He is not just a well-known palaeontologist. Passionate in all branches of geology, he developed an exceptional background and became one of the very few feeling comfortable out of his area of expertise and capable of seeing the bridges connecting field observations. His research and publications do not necessarily reflect his wide knowledge but those who have or have had the chance to work with him know that Eddy is a living encyclopedia. Moreover, his interest largely crosses over the borders of geology and he can with erudition discuss archaeology, history, architecture, volcanoes, anthropology, literature, cuisine and wine! To understand the man, let us visit his career.Born in 1949 in Seraing, near Liege in Belgium, the young Eddy quickly found his interest in fossils after he discovered brachiopods in the excavation made for the construction of a bridge in Esneux. His first fossils… and the beginning of a life-long passion for geology. During his childhood and teenage years, he used to search for fossils and minerals while on holiday with his parents, but also around Liege. In 1967, he entered the University of Liege to study geology (at that time ‘Geological and Mineralogical Sciences’) and learned from Prof. Belliere, Michot and Ubaghs among others. Four years later he presented his master’s thesis on Visean corals. His scientific career was not yet cast because militar","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73203290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
1. IntroductionThe larger solitary corals of the Early Carboniferous in eastern Australia – Amygdalophyllum Dun & Benson, 1920, Merlewoodia Pickett, 1967 and Symplectophyllum Hill, 1934 – have broad dissepimentaria characterised by an outer zone of large and irregular lonsdaleoid dissepiments, axial of which is a zone of naotic dissepiments, with regular dissepiments only the innermost zone. By contrast, the septa of the inner part of the corallite are thickened and braced by tabulae and regular dissepiments, and the axial structure is robust (except in Merlewoodia). Specimens of these genera are usually recovered as decorticated individuals, having undergone some penecontemporaneous erosion. Because of the zone of lonsdaleoid dissepiments, the outer part of the corallite is fragile, and little erosion is needed for decortication. Occasionally however, notably at a locality on “Pinaroo Plain” station at Caroda, near Bingara, New South Wales, specimens of Symplectophyllum are commonly found in growth position within larger colonies of the tabulate genus Syringopora, the growth direction of the two species being subparallel. More rarely they may be associated with branching lithostrotionids such as Cionodendron Benson & Smith, 1923 or Pickettodendron Denayer & Webb, 2015. The dynamics of this association form the subject of this article.2. Localities and ageTwo localities are the principal sources of the present material. The first, which has provided the largest number of spec
1. 澳大利亚东部早石石纪较大的独居珊瑚——Amygdalophyllum Dun & Benson, 1920年，Merlewoodia Pickett, 1967年和Symplectophyllum Hill, 1934年——具有广泛的分离体，其特征是大而不规则的lonsdaleoid分离体的外部区域，其轴向是国家分离体的区域，只有最内部的区域有规则的分离体。相比之下，珊瑚岩内部的隔层增厚，由板状和规则的分离支撑，轴向结构坚固(Merlewoodia除外)。这些属的标本通常被恢复为蜕皮的个体，经历了一些准同时期的侵蚀。由于龙氏体分离带的存在，珊瑚岩的外层很脆弱，几乎不需要侵蚀就能进行脱屑。然而，偶尔，特别是在新南威尔士州宾加拉附近Caroda的“Pinaroo平原”站点，在tabulate genus Syringopora的较大群落中，通常发现Symplectophyllum的标本生长位置，两个物种的生长方向接近平行。更罕见的是，它们可能与分支石斛相关，如Cionodendron Benson & Smith, 1923年或Pickettodendron Denayer & Webb, 2015年。这种联系的动态构成了本文的主题。地方和年龄两个地方是本材料的主要来源。第一个，它提供了最多的规格
{"title":"Settlement strategy in Symplectophyllum (Cnidaria, Rugosa)","authors":"J. Pickett","doi":"10.20341/GB.2015.015","DOIUrl":"https://doi.org/10.20341/GB.2015.015","url":null,"abstract":"1. IntroductionThe larger solitary corals of the Early Carboniferous in eastern Australia – Amygdalophyllum Dun & Benson, 1920, Merlewoodia Pickett, 1967 and Symplectophyllum Hill, 1934 – have broad dissepimentaria characterised by an outer zone of large and irregular lonsdaleoid dissepiments, axial of which is a zone of naotic dissepiments, with regular dissepiments only the innermost zone. By contrast, the septa of the inner part of the corallite are thickened and braced by tabulae and regular dissepiments, and the axial structure is robust (except in Merlewoodia). Specimens of these genera are usually recovered as decorticated individuals, having undergone some penecontemporaneous erosion. Because of the zone of lonsdaleoid dissepiments, the outer part of the corallite is fragile, and little erosion is needed for decortication. Occasionally however, notably at a locality on “Pinaroo Plain” station at Caroda, near Bingara, New South Wales, specimens of Symplectophyllum are commonly found in growth position within larger colonies of the tabulate genus Syringopora, the growth direction of the two species being subparallel. More rarely they may be associated with branching lithostrotionids such as Cionodendron Benson & Smith, 1923 or Pickettodendron Denayer & Webb, 2015. The dynamics of this association form the subject of this article.2. Localities and ageTwo localities are the principal sources of the present material. The first, which has provided the largest number of spec","PeriodicalId":12812,"journal":{"name":"Geologica Belgica","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80514728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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