Abstract Gas-pipeline construction around Brandov (Czech Republic) exposed pre Quaternary strata allowing more precise understanding of the regional geology. The crystalline rocks in the basement, near the Brandov Carboniferous Relict, belong to Sayda Dome rather than to the Hora Svaté Kateřiny (Katharinaberg) Dome. The lower Carboniferous unit (Westphalian – Moscovian) is of greater extent than previously estimated. In contrast, the upper unit, which is correlated with Stephanian (Kasimovian or Gzhelian) strata, is arealy less extensive than previously estimated and is devoid of fossil remains. An anthracite seam, in the lower unit, was discovered in the “North depth” some 1–1.3 km to the North from old mining activity of the “South depth”. The seam was accompanied by a flora dominated by cordaitaleans and sphenopsids (calamitaleans), and common lycopsids and ferns. Palynomorphs were isolated from mudstones for the first time and 36 genera and 51 species of miospores could be determined. A humic clayey layer was discovered in the Quaternary deposits whose palynological age is 500 – 100 years old.
{"title":"New Geological, Palaeobotanical and Palynological Evidence of the Carboniferous from Brandov (Krušné Hory Mts., Czech Republic)","authors":"Z. Šimůnek, B. Mlčoch, J. Drábková","doi":"10.1515/fbgp-2016-0001","DOIUrl":"https://doi.org/10.1515/fbgp-2016-0001","url":null,"abstract":"Abstract Gas-pipeline construction around Brandov (Czech Republic) exposed pre Quaternary strata allowing more precise understanding of the regional geology. The crystalline rocks in the basement, near the Brandov Carboniferous Relict, belong to Sayda Dome rather than to the Hora Svaté Kateřiny (Katharinaberg) Dome. The lower Carboniferous unit (Westphalian – Moscovian) is of greater extent than previously estimated. In contrast, the upper unit, which is correlated with Stephanian (Kasimovian or Gzhelian) strata, is arealy less extensive than previously estimated and is devoid of fossil remains. An anthracite seam, in the lower unit, was discovered in the “North depth” some 1–1.3 km to the North from old mining activity of the “South depth”. The seam was accompanied by a flora dominated by cordaitaleans and sphenopsids (calamitaleans), and common lycopsids and ferns. Palynomorphs were isolated from mudstones for the first time and 36 genera and 51 species of miospores could be determined. A humic clayey layer was discovered in the Quaternary deposits whose palynological age is 500 – 100 years old.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"54 1","pages":"1 - 22"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80645525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The calceolide coral Calceola sandalina (Linné, 1771) has been observed in the Acanthopyge Limestone (Choteč Formation, Eifelian) in the Koněprusy area, Czech Republic. Its presence in the Barrandian area indicates absence of significant palaeogeographic barriers restricting the distribution of this tetracoral in the Middle Devonian. Association of Calceola with a taxonomically diverse ribbed brachiopod faunas attests for two different types of environment on the Koněprusy submarine elevation during deposition of the Acanthopyge Limestone. Calceola-bearing beds represent a high-energy reefal environment different from somewhat deeper and calmer environment characterized by smooth-shelled, small to medium sized spire-bearing brachiopods.
{"title":"The First Occurrence of the Devonian Rugose Coral Calceola Sandalina (Linné, 1771) in the Barrandian Area, Czech Republic","authors":"M. Mergl","doi":"10.2478/fbgp-2014-0002","DOIUrl":"https://doi.org/10.2478/fbgp-2014-0002","url":null,"abstract":"Abstract The calceolide coral Calceola sandalina (Linné, 1771) has been observed in the Acanthopyge Limestone (Choteč Formation, Eifelian) in the Koněprusy area, Czech Republic. Its presence in the Barrandian area indicates absence of significant palaeogeographic barriers restricting the distribution of this tetracoral in the Middle Devonian. Association of Calceola with a taxonomically diverse ribbed brachiopod faunas attests for two different types of environment on the Koněprusy submarine elevation during deposition of the Acanthopyge Limestone. Calceola-bearing beds represent a high-energy reefal environment different from somewhat deeper and calmer environment characterized by smooth-shelled, small to medium sized spire-bearing brachiopods.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"3 1","pages":"11 - 19"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75546540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The temporarily exposed rocks of the Dobrotivá Formation (Middle Ordovician, upper Darriwilian) accessible, due to lower water levels, in Džbán water reservoir (Praha-Vokovice area) have produced common fauna. The newly obtained trilobite-dominated fossil associations enable a more detailed discussion of faunal changes in the lower and lower-middle portions of the Dobrotivá Formation - a transition from the Placoparia Association to the newly recognized Degamella-Zeliszkella Association, dominated by mesopelagic forms.
{"title":"Complementary Description of the Middle Ordovician Trilobite Associations at Praha-Vokovice","authors":"M. David, P. Budil","doi":"10.1515/fbgp-2015-0001","DOIUrl":"https://doi.org/10.1515/fbgp-2015-0001","url":null,"abstract":"Abstract The temporarily exposed rocks of the Dobrotivá Formation (Middle Ordovician, upper Darriwilian) accessible, due to lower water levels, in Džbán water reservoir (Praha-Vokovice area) have produced common fauna. The newly obtained trilobite-dominated fossil associations enable a more detailed discussion of faunal changes in the lower and lower-middle portions of the Dobrotivá Formation - a transition from the Placoparia Association to the newly recognized Degamella-Zeliszkella Association, dominated by mesopelagic forms.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"4 1","pages":"1 - 7"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82327416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The first occurrence of fenestrate bryozoans is reported from the Acanthopyge Limestone (Eifelian) in the Koněprusy area of the Czech Republic. Fragmented zoaria have been identified in lightgrey crinoidal-limestone rich with brachiopods, corals, and stromatoporoids. Several species of fenestrates are evident, but poor preservation and fragmentation of zoaria allow only approximate taxonomic determination. The fenestrates, Fenestella sp., Laxifenestella (?) sp., Hemitrypa sp., Polyporella sp., Ptylopora sp., and Reteporina sp., are illustrated and briefly described. The presence of fenestrates has a great palaeoenvironmental significance. Fenestrates together with brachiopods, stromatopoids, and corals indicate a high-energy reef environment on the Koněprusy submarine elevation in the upper Eifelian. Morphology of fenestrates and high morphological disparity of brachiopods are remarkably similar to the faunas of the Pragian age in the Koněprusy area suggesting a similar reef environment. The upper Eifelian age of the locality is evidenced by conodonts of the Tortodus kockelianus Zone.
{"title":"Fenestrate Bryozoans in the Acanthopyge Limestone (Eifelian) in the Barrandian Area (Czech Republic)","authors":"M. Mergl","doi":"10.1515/fbgp-2015-0002","DOIUrl":"https://doi.org/10.1515/fbgp-2015-0002","url":null,"abstract":"Abstract The first occurrence of fenestrate bryozoans is reported from the Acanthopyge Limestone (Eifelian) in the Koněprusy area of the Czech Republic. Fragmented zoaria have been identified in lightgrey crinoidal-limestone rich with brachiopods, corals, and stromatoporoids. Several species of fenestrates are evident, but poor preservation and fragmentation of zoaria allow only approximate taxonomic determination. The fenestrates, Fenestella sp., Laxifenestella (?) sp., Hemitrypa sp., Polyporella sp., Ptylopora sp., and Reteporina sp., are illustrated and briefly described. The presence of fenestrates has a great palaeoenvironmental significance. Fenestrates together with brachiopods, stromatopoids, and corals indicate a high-energy reef environment on the Koněprusy submarine elevation in the upper Eifelian. Morphology of fenestrates and high morphological disparity of brachiopods are remarkably similar to the faunas of the Pragian age in the Koněprusy area suggesting a similar reef environment. The upper Eifelian age of the locality is evidenced by conodonts of the Tortodus kockelianus Zone.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"31 1","pages":"15 - 9"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88257147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Pšenička, T. Kolar-Jurkovšek, S. Opluštil, M. Novak
Abstract This paper provides documentation of the Late Carboniferous flora of the Southern Karavanke Mountains in Slovenia that is housed in the Gornjesavski Muzej (Upper Sava Museum) in Jesenice, Slovenia. The paleoflora from this area has not been systematically documented until today. 21 fossil-species, which probably represent 17 biological species, were identified. Common species include Sigillaria brardii Brongniart, Lepidodendron dissitum Sauver, Annularia carinata Gutbier, Calamites undulatus Sternberg, Sphenophyllum oblongifolium (Germar and Kaulfuss) Unger, Acitheca polymorpha (Brongniart) Schimper and Nemejcopteris feminaeformis (Schlotheim) Barthel. Stratigraphically important are Sphenophyllum oblongifolium and Nemejcopteris feminaeformis, and based on their occurrence we can assume the studied paleoflora to be Gzhelian D (Jigulites jigulensis zone on the Russian Platform), i.e. Stephanian C
{"title":"Stephanian Fossil Flora from Paralic Carboniferous Deposits of the Jesenice Area (Slovenia) and Its Comparison with Czech Localities","authors":"J. Pšenička, T. Kolar-Jurkovšek, S. Opluštil, M. Novak","doi":"10.2478/fbgp-2014-0003","DOIUrl":"https://doi.org/10.2478/fbgp-2014-0003","url":null,"abstract":"Abstract This paper provides documentation of the Late Carboniferous flora of the Southern Karavanke Mountains in Slovenia that is housed in the Gornjesavski Muzej (Upper Sava Museum) in Jesenice, Slovenia. The paleoflora from this area has not been systematically documented until today. 21 fossil-species, which probably represent 17 biological species, were identified. Common species include Sigillaria brardii Brongniart, Lepidodendron dissitum Sauver, Annularia carinata Gutbier, Calamites undulatus Sternberg, Sphenophyllum oblongifolium (Germar and Kaulfuss) Unger, Acitheca polymorpha (Brongniart) Schimper and Nemejcopteris feminaeformis (Schlotheim) Barthel. Stratigraphically important are Sphenophyllum oblongifolium and Nemejcopteris feminaeformis, and based on their occurrence we can assume the studied paleoflora to be Gzhelian D (Jigulites jigulensis zone on the Russian Platform), i.e. Stephanian C","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"13 1","pages":"21 - 64"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87567876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract New records of fruits of Banisteriaecarpum giganteum (Göppert) Kräusel from the middle and late Miocene of Austria and Hungary and the Pliocene of Romania regularly associated with foliage of Byttneriophyllum tiliifolium (A. Braun) Knobloch & Kvaček confirm previous views of Czeczott, Ţicleanu and others that the two organs belong to a single plant related to Malvaceae s.l. and not to Mapighiaceae, as previously assumed by Schenk, Kräusel and Kirchheimer. According to the fruit morphology it is closely similar to Tarrietia Blume (tropical SE Asia and Africa, sometimes included together with Argyrodendron F. Muel. to Heritiera Dryand. in Ait.), with which it partly shares habitats (swamp to riparian forests) and decidedly differs in foliage (leaves strongly asymmetric ovate vs symmetric simple ovate to elongate or palmately compound) and climatic requirements (warm temperate vs tropical conditions). Its pollen has not yet been firmly discriminated. The fossils so far assigned to Tarrietia from Europe must be excluded from this genus: Tarrietia hungarica Rásky from the early Oligocene of Hungary was assumed by Andreánszky as legume fruits (Machaerites hungaricus (Rásky) Andreánszky), Tarrietia germanica Rüffle from the early Miocene of Germany, according to fine venation pattern, may also represent a monospermic legume pod
奥地利和匈牙利中新世中晚期和罗马尼亚上新世Banisteriaecarpum giganteum (Göppert) Kräusel的果实新记录与Byttneriophyllum tiliifolium (a . Braun) Knobloch & kva ek的叶子经常联系在一起，证实了Czeczott、Ţicleanu等人先前的观点，即这两个器官属于一种植物，与Malvaceae s.l.有关，而不是像Schenk、Kräusel和Kirchheimer先前认为的那样属于Mapighiaceae。从果实形态上看，它与热带东南亚和非洲的Tarrietia Blume非常相似，有时与Argyrodendron F. Muel合并在一起。去赫里蒂埃拉旱地。在澳大利亚)，它与它们部分共享栖息地(沼泽到河岸森林)，在叶子(叶子强烈不对称的卵形与对称的简单卵形到细长或掌状复合)和气候要求(暖温带与热带条件)上明显不同。它的花粉还没有被完全辨别出来。目前属于欧洲Tarrietia的化石必须排除在这个属之外:Andreánszky认为匈牙利早离新世的Tarrietia hungarica Rásky是豆科植物的果实(Machaerites hungaricus (Rásky) Andreánszky)，而德国中新世早期的Tarrietia germanica r ffle，根据精细脉理模式，也可能是单精豆科植物的豆荚
{"title":"The Whole Plant Reconstruction of Banisteriaecarpum Giganteum and Byttneriophyllum Tiliifolium - A Preliminary Report","authors":"Z. Kvaček, L. Hably","doi":"10.2478/fbgp-2014-0001","DOIUrl":"https://doi.org/10.2478/fbgp-2014-0001","url":null,"abstract":"Abstract New records of fruits of Banisteriaecarpum giganteum (Göppert) Kräusel from the middle and late Miocene of Austria and Hungary and the Pliocene of Romania regularly associated with foliage of Byttneriophyllum tiliifolium (A. Braun) Knobloch & Kvaček confirm previous views of Czeczott, Ţicleanu and others that the two organs belong to a single plant related to Malvaceae s.l. and not to Mapighiaceae, as previously assumed by Schenk, Kräusel and Kirchheimer. According to the fruit morphology it is closely similar to Tarrietia Blume (tropical SE Asia and Africa, sometimes included together with Argyrodendron F. Muel. to Heritiera Dryand. in Ait.), with which it partly shares habitats (swamp to riparian forests) and decidedly differs in foliage (leaves strongly asymmetric ovate vs symmetric simple ovate to elongate or palmately compound) and climatic requirements (warm temperate vs tropical conditions). Its pollen has not yet been firmly discriminated. The fossils so far assigned to Tarrietia from Europe must be excluded from this genus: Tarrietia hungarica Rásky from the early Oligocene of Hungary was assumed by Andreánszky as legume fruits (Machaerites hungaricus (Rásky) Andreánszky), Tarrietia germanica Rüffle from the early Miocene of Germany, according to fine venation pattern, may also represent a monospermic legume pod","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"62 1","pages":"1 - 10"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74135419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Twenty-two fossiliferous localities of the Mílina Formation described herein represent all fossil sites of this unit we have found mentioned in publications. Fossil taxa from relevant papers are summarized and historic names used for the localities are listed. Updated lists of fauna are compiled for each locality; based on these an overall list for the formation is concluded.
{"title":"Index of Fossiliferous Localities of the Mílina Formation (Lower Ordovician of the Prague Basin, Czech Republic)","authors":"J. Kraft, M. Mergl, T. Hroch, P. Kraft","doi":"10.1515/fbgp-2015-0003","DOIUrl":"https://doi.org/10.1515/fbgp-2015-0003","url":null,"abstract":"Abstract Twenty-two fossiliferous localities of the Mílina Formation described herein represent all fossil sites of this unit we have found mentioned in publications. Fossil taxa from relevant papers are summarized and historic names used for the localities are listed. Updated lists of fauna are compiled for each locality; based on these an overall list for the formation is concluded.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"40 1","pages":"17 - 50"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85073487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The Pennsylvanian flora from the Alpe Logone/Val Sanagra locality in the Western Lombardy (Southern Alps, Italy) last underwent a taxonomic study in the mid 20th century. The main problem is generally poor preservation of the plant remains, which makes their identification problematic. Despite this, the authors have identified 43 fossil species from this locality. Based on the sedimentary context of this paleoflora, we assume that the Val Sanagra sediments were deposited in a continental setting, in a fluvial environment with a well-developed and vegetated floodplain where where clastic substrates would locally and occasionally change into peat swamp. The common presence of rhytidolepis and sub-rhytidolepis sigillarias, as well of Eusphenopteris neuropteroides, Lobatopteris miltonii, Mariopteris latifolia, Paripteris linguaefolia, Pecopteris microphylla, Alethopteris sp. (cf. grandinii) indicates that the flora from the Val Sanagra locality spans the interval between the Duckmantian and Bolsovian (middle Moscovian), and thus represents one of the oldest Pennsylvanian floras of the Southern Alps.
{"title":"Revision of the Pennsylvanian Flora from Val Sanagra in Western Part of the Southern Alps (Italy)","authors":"J. Pšenička, S. Opluštil, A. Ronchi, Z. Šimůnek","doi":"10.2478/fbgp-2013-0003","DOIUrl":"https://doi.org/10.2478/fbgp-2013-0003","url":null,"abstract":"Abstract The Pennsylvanian flora from the Alpe Logone/Val Sanagra locality in the Western Lombardy (Southern Alps, Italy) last underwent a taxonomic study in the mid 20th century. The main problem is generally poor preservation of the plant remains, which makes their identification problematic. Despite this, the authors have identified 43 fossil species from this locality. Based on the sedimentary context of this paleoflora, we assume that the Val Sanagra sediments were deposited in a continental setting, in a fluvial environment with a well-developed and vegetated floodplain where where clastic substrates would locally and occasionally change into peat swamp. The common presence of rhytidolepis and sub-rhytidolepis sigillarias, as well of Eusphenopteris neuropteroides, Lobatopteris miltonii, Mariopteris latifolia, Paripteris linguaefolia, Pecopteris microphylla, Alethopteris sp. (cf. grandinii) indicates that the flora from the Val Sanagra locality spans the interval between the Duckmantian and Bolsovian (middle Moscovian), and thus represents one of the oldest Pennsylvanian floras of the Southern Alps.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"35 1","pages":"31 - 79"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78766552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Carboniferous outliers are found west of the late Carboniferous West Bohemian basins and also south of the West and Central Bohemian basins. The West Bohemian group is Asturian (= Westphalian D) or younger and is notably coal-bearing, the other group of outliers consists mostly of coal-bearing upper Carboniferous volcaniclastic rocks of Bolsovian (= Westphalian C) and/or Asturian age. They form a discontinuous belt extending through the area between and around the towns of Merklín and Beroun. These rocks are underlain chiefly by rocks of ages varying from the Neoproterozoic or Cambrian up to the Ordovician. If the nappe structure of the Barrandian Lower Paleozoic proposed by Melichar and Hladil (e.g. 1999) is not widely present, then it can be assumed that as much as 1850 m of Lower Paleozoic sediments and volcanics could have been eroded prior to the onset of sedimentation of the Bolsovian rocks. In the upper Carboniferous outliers near Mirošov, Skořice and Kamenný Újezd, where sedimentation began as late as in the Asturian, the thickness of eroded deposits might have been even greater, reaching as much as 3150 m.
{"title":"Observations Concerning the Thickness of Rocks Eroded Between the Cambrian and Bolsovian (= Westphalian C) in Central and Western Bohemia","authors":"J. Pešek, K. Martínek","doi":"10.2478/fbgp-2013-0001","DOIUrl":"https://doi.org/10.2478/fbgp-2013-0001","url":null,"abstract":"Abstract Carboniferous outliers are found west of the late Carboniferous West Bohemian basins and also south of the West and Central Bohemian basins. The West Bohemian group is Asturian (= Westphalian D) or younger and is notably coal-bearing, the other group of outliers consists mostly of coal-bearing upper Carboniferous volcaniclastic rocks of Bolsovian (= Westphalian C) and/or Asturian age. They form a discontinuous belt extending through the area between and around the towns of Merklín and Beroun. These rocks are underlain chiefly by rocks of ages varying from the Neoproterozoic or Cambrian up to the Ordovician. If the nappe structure of the Barrandian Lower Paleozoic proposed by Melichar and Hladil (e.g. 1999) is not widely present, then it can be assumed that as much as 1850 m of Lower Paleozoic sediments and volcanics could have been eroded prior to the onset of sedimentation of the Bolsovian rocks. In the upper Carboniferous outliers near Mirošov, Skořice and Kamenný Újezd, where sedimentation began as late as in the Asturian, the thickness of eroded deposits might have been even greater, reaching as much as 3150 m.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"15 1","pages":"1 - 14"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90068356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The Prášilské Lake is the glacial lake in the Bohemian Forest (Šumava Mts) located on the Czech side in the elevation of 1,079 m above sea level. The lake area is 4 ha, the maximal depth is 15.5 m. The lake catchment area is situated in the sub-alpine zone. The studied area has never been the object of forest or agricultural farming in the history because of its inaccessibility. The sediment dating was carried out by means of lead isotope 210Pb. The oldest layer established by this isotope in the Prášilské Lake was in the depth of 0.47 m. This dating was used for the deepest layer of sediment and its age was dated to the year of 1843 (depth 0.11 m) and a base of this profile to the medieval age (depth 0.47 m), which corresponds to about the 12th-13th century A.D. The analysed profile (0-0.47 m) can be divided into the local pollen assemblage zones PRI-1 (depth 0.37-0.47 m), PRI-2 (depth 0.25-0.37 m), PRI-3 (depth 0.12- 0.25 m), PRI-4 (depth 0.06-0.12 m), PRI-5 (depth 0.02-0.06 m), PRI-6 (depth 0-0.02 m). On the basis of dating by the 210Pb method the age of sediment (0-0.11 m) is established into the range of 1843 to 1994. It is noticeable in the pollen spectrum that it concerns a locality situated already above the forest border, the pollen curves of stratigraphical important taxons (mainly woody species) do not change markedly. The rich woody component is formed mainly by pollen grains of Picea and Fagus. The herbaceous component (NAP) is very diverse; however, in a general way the pollen grains of woody species (AP) predominate due to the above mentioned deciduous forests. A representation of the herbaceous component (NAP) is very varied as far as species are concerned, human influence is very visible here (e.g. occurrence of cereals Cerealia, Zea mays, Fagopyrum-type, weed: Centaurea cyanus, Agrostemma githago etc.). The dating of this part also corresponds to the results of the pollen analysis. Of the plants producing spores the findings of lesser clubmoss (Selaginella-type cf. Selaginella selaginoides) and water plant quillwort (Isoëtes), whose nearest contemporary place of the finding in our territory is in the Černé and Plešné Lake and Wielki Staw (the Giant Mts), were quite interesting. The most of spores were recorded at the family Polypodiaceae and green alga Botryococcus, which indicate cold and humid conditions of the occurrence.
{"title":"Historical Influence of Man on the Vegetation Record in the Prášilské Lake Sediments (Bohemian Forest, Czech Republic)","authors":"E. Břízová","doi":"10.2478/fbgp-2013-0002","DOIUrl":"https://doi.org/10.2478/fbgp-2013-0002","url":null,"abstract":"Abstract The Prášilské Lake is the glacial lake in the Bohemian Forest (Šumava Mts) located on the Czech side in the elevation of 1,079 m above sea level. The lake area is 4 ha, the maximal depth is 15.5 m. The lake catchment area is situated in the sub-alpine zone. The studied area has never been the object of forest or agricultural farming in the history because of its inaccessibility. The sediment dating was carried out by means of lead isotope 210Pb. The oldest layer established by this isotope in the Prášilské Lake was in the depth of 0.47 m. This dating was used for the deepest layer of sediment and its age was dated to the year of 1843 (depth 0.11 m) and a base of this profile to the medieval age (depth 0.47 m), which corresponds to about the 12th-13th century A.D. The analysed profile (0-0.47 m) can be divided into the local pollen assemblage zones PRI-1 (depth 0.37-0.47 m), PRI-2 (depth 0.25-0.37 m), PRI-3 (depth 0.12- 0.25 m), PRI-4 (depth 0.06-0.12 m), PRI-5 (depth 0.02-0.06 m), PRI-6 (depth 0-0.02 m). On the basis of dating by the 210Pb method the age of sediment (0-0.11 m) is established into the range of 1843 to 1994. It is noticeable in the pollen spectrum that it concerns a locality situated already above the forest border, the pollen curves of stratigraphical important taxons (mainly woody species) do not change markedly. The rich woody component is formed mainly by pollen grains of Picea and Fagus. The herbaceous component (NAP) is very diverse; however, in a general way the pollen grains of woody species (AP) predominate due to the above mentioned deciduous forests. A representation of the herbaceous component (NAP) is very varied as far as species are concerned, human influence is very visible here (e.g. occurrence of cereals Cerealia, Zea mays, Fagopyrum-type, weed: Centaurea cyanus, Agrostemma githago etc.). The dating of this part also corresponds to the results of the pollen analysis. Of the plants producing spores the findings of lesser clubmoss (Selaginella-type cf. Selaginella selaginoides) and water plant quillwort (Isoëtes), whose nearest contemporary place of the finding in our territory is in the Černé and Plešné Lake and Wielki Staw (the Giant Mts), were quite interesting. The most of spores were recorded at the family Polypodiaceae and green alga Botryococcus, which indicate cold and humid conditions of the occurrence.","PeriodicalId":12284,"journal":{"name":"Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica","volume":"2000 1","pages":"15 - 30"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88317535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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