Pub Date : 2023-08-23DOI: 10.1007/s41513-023-00216-8
J. García-Cobeña, F. Verdú, A. Cobos
{"title":"Nuevos fósiles de ornitópodos y faunas asociadas del Hauteriviense superior-Barremiense inferior (Cretácico Inferior) de la Formación El Castellar en la provincia de Teruel","authors":"J. García-Cobeña, F. Verdú, A. Cobos","doi":"10.1007/s41513-023-00216-8","DOIUrl":"https://doi.org/10.1007/s41513-023-00216-8","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43159901","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}
Pub Date : 2023-08-16DOI: 10.1007/s41513-023-00215-9
E. Mayoral, C. Herrero, E. Herrero, J. Martín‑Chivelet, F. Pérez‑Lorente
{"title":"Un nuevo rastro lacustre enigmático en el Mioceno superior de la Sierra de las Cabras (Jumilla, Murcia, España)","authors":"E. Mayoral, C. Herrero, E. Herrero, J. Martín‑Chivelet, F. Pérez‑Lorente","doi":"10.1007/s41513-023-00215-9","DOIUrl":"https://doi.org/10.1007/s41513-023-00215-9","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46995939","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}
Pub Date : 2023-08-16DOI: 10.1007/s41513-023-00214-w
Gonçalo Prista, M. Cachão, M. Estevens
{"title":"Considerations on the Portuguese Sirenia (Mammalia) fossil record","authors":"Gonçalo Prista, M. Cachão, M. Estevens","doi":"10.1007/s41513-023-00214-w","DOIUrl":"https://doi.org/10.1007/s41513-023-00214-w","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49629978","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}
Pub Date : 2023-05-30DOI: 10.1007/s41513-023-00213-x
Tomás Alberjón-Peñas, Juan C. Braga, Julio Aguirre, Paola Flórez
Abstract The Los Guájares valley is located about 35 km south of Granada in the Internal Zones of the Betic Cordillera. The Miocene deposits in this area consist of six sedimentary units separated by unconformities, which are exposed in small and laterally discontinuous outcrops overlying metamorphic rocks of the Alpujárride Complex. The lowest unit comprises upper Serravallian marls with planktonic foraminifera filling neptunian dykes and covering Triassic dolomitic marbles of the Alpujárride Complex. These marls reflect deep marine deposition on the Betic basement under a local extensional regime. Uplift of the region led to emergence and deposition of continental red alluvial-fan conglomerates and foothill breccias. The overlying unit, a shoreline conglomerate with small oyster banks, indicates relative sea-level rise. Shallow-marine conditions continued during the deposition of the following unit, early Tortonian in age, which consists of calcareous sandstones with hermatypic corals. Small patch reefs developed in the overlying unit composed of sandy limestones with corals ( Porites, Tarbellastraea, Thegioastraea ) and oysters, and sandy limestones with coralline algae in the most distal areas. The coral reefs in Los Guájares and some coral heads in Albuñuelas, a near locality, are the only record of early Tortonian coral buildups in the Mediterranean. The last marine unit comprises lower Tortonian conglomerates, sandstones and siltstones accumulated in the front of a small delta. Oyster banks and concentrations of Turritelines suggest high nutrient levels in the delta-front paleoenvironments. The Los Guájares valley area emerged afterwards, following the onset of a compressional geodynamic regime in the central Betic Cordillera and since the early Tortonian only small bodies of foothill and alluvial-fan deposits formed in a predominantly erosional context.
Los Guájares山谷位于格拉纳达以南约35公里处，位于贝提克山脉的内部地带。本区中新世矿床由6个不整合面分隔的沉积单元组成，暴露在Alpujárride杂岩变质岩上的小型横向不连续露头中。最低单元由上塞拉瓦利世泥灰岩组成，浮游有孔虫填充海王星岩脉，覆盖Alpujárride杂岩的三叠纪白云质大理岩。这些泥灰岩反映了北海基底在局部伸展作用下的深海相沉积。该地区的隆升导致了陆相红色冲积扇砾岩和山麓角砾岩的出现和沉积。上覆的单元是一个有小牡蛎滩的海岸线砾岩，表明海平面相对上升。浅海相条件在下一个单元的沉积过程中继续存在，这是早期托尔顿期，由钙质砂岩和雌雄珊瑚组成。在砂质灰岩与珊瑚(Porites, Tarbellastraea, Thegioastraea)和牡蛎组成的上覆单元中发育了小块珊瑚礁，在最远的区域发育了砂质灰岩与珊瑚藻。洛斯Guájares的珊瑚礁和附近Albuñuelas的一些珊瑚头是地中海早期托尔顿珊瑚聚集的唯一记录。最后一个海相单元由下托尔顿砾岩、砂岩和粉砂岩组成，这些砾岩聚集在一个小三角洲的前缘。牡蛎库和灯塔线的浓度表明，三角洲前缘古环境的营养水平较高。洛斯Guájares山谷地区随后出现，在贝提克山脉中部的挤压地球动力学机制开始之后，自托尔顿早期以来，只有小的山麓和冲积扇沉积体在主要的侵蚀环境中形成。
{"title":"The Miocene record of the Betic Cordillera uplift in Los Guájares valley (Granada province, S Spain)","authors":"Tomás Alberjón-Peñas, Juan C. Braga, Julio Aguirre, Paola Flórez","doi":"10.1007/s41513-023-00213-x","DOIUrl":"https://doi.org/10.1007/s41513-023-00213-x","url":null,"abstract":"Abstract The Los Guájares valley is located about 35 km south of Granada in the Internal Zones of the Betic Cordillera. The Miocene deposits in this area consist of six sedimentary units separated by unconformities, which are exposed in small and laterally discontinuous outcrops overlying metamorphic rocks of the Alpujárride Complex. The lowest unit comprises upper Serravallian marls with planktonic foraminifera filling neptunian dykes and covering Triassic dolomitic marbles of the Alpujárride Complex. These marls reflect deep marine deposition on the Betic basement under a local extensional regime. Uplift of the region led to emergence and deposition of continental red alluvial-fan conglomerates and foothill breccias. The overlying unit, a shoreline conglomerate with small oyster banks, indicates relative sea-level rise. Shallow-marine conditions continued during the deposition of the following unit, early Tortonian in age, which consists of calcareous sandstones with hermatypic corals. Small patch reefs developed in the overlying unit composed of sandy limestones with corals ( Porites, Tarbellastraea, Thegioastraea ) and oysters, and sandy limestones with coralline algae in the most distal areas. The coral reefs in Los Guájares and some coral heads in Albuñuelas, a near locality, are the only record of early Tortonian coral buildups in the Mediterranean. The last marine unit comprises lower Tortonian conglomerates, sandstones and siltstones accumulated in the front of a small delta. Oyster banks and concentrations of Turritelines suggest high nutrient levels in the delta-front paleoenvironments. The Los Guájares valley area emerged afterwards, following the onset of a compressional geodynamic regime in the central Betic Cordillera and since the early Tortonian only small bodies of foothill and alluvial-fan deposits formed in a predominantly erosional context.","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135691127","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}
Pub Date : 2023-05-23DOI: 10.1007/s41513-023-00212-y
O. Navarro, J. Moratalla
{"title":"El Barrancazo: a new locality of possible semi-aquatic turtle tracks from the Upper Triassic of Cortes de Pallás (Eastern Iberia)","authors":"O. Navarro, J. Moratalla","doi":"10.1007/s41513-023-00212-y","DOIUrl":"https://doi.org/10.1007/s41513-023-00212-y","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"49 1","pages":"169 - 188"},"PeriodicalIF":1.3,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42939143","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}
Pub Date : 2023-05-23DOI: 10.1007/s41513-023-00211-z
Javier Elorza, Clemente Recio
Abstract The large, thick beachrock of Arrigunaga beach (Bizkaia, Spain) is unusual among beachrocks because of (a) Its location, at 43ºN latitude; (b) The substrate that was cemented, largely consisting on smelter slag mixed with natural beach sediment; (c) The timing and amount of slag dumping at sea, with millions of tons of waste dumped in the short interval AD 1902–1966; (d) The sudden cessation of dumping (AD 1966), followed by immediate beachrock exhumation and retrogradation and (e) An aggressive engineering intervention (AD 1999), supposedly aimed at beach regeneration, with imported bioclastic sands, resulting in additional weak cementation of the residual blocks. Thickness of the beachrock and the identification of internal clasts attest for a multiepisodic process with at least three main cementation steps and several CaCO 3 polymorphs precipitated from mixed marine and freshwaters. Evidence of bacterial remains suggests that biological activity helped to trigger cementation. C and O isotopic values obtained in the cements confirm the dominance of mixed marine and freshwaters composition. Exact knowledge of the start and finishing dates of slag dumping permits to tightly constrain the rapid cementation, which was already evident at least since AD 1924, that produced the beachrock, as well as its evolution towards its current fast and complete disappearance.
{"title":"Formación de una beachrock contemporánea en los depósitos de escoria antropogénica de la playa de Arrigunaga (Bizkaia, España)","authors":"Javier Elorza, Clemente Recio","doi":"10.1007/s41513-023-00211-z","DOIUrl":"https://doi.org/10.1007/s41513-023-00211-z","url":null,"abstract":"Abstract The large, thick beachrock of Arrigunaga beach (Bizkaia, Spain) is unusual among beachrocks because of (a) Its location, at 43ºN latitude; (b) The substrate that was cemented, largely consisting on smelter slag mixed with natural beach sediment; (c) The timing and amount of slag dumping at sea, with millions of tons of waste dumped in the short interval AD 1902–1966; (d) The sudden cessation of dumping (AD 1966), followed by immediate beachrock exhumation and retrogradation and (e) An aggressive engineering intervention (AD 1999), supposedly aimed at beach regeneration, with imported bioclastic sands, resulting in additional weak cementation of the residual blocks. Thickness of the beachrock and the identification of internal clasts attest for a multiepisodic process with at least three main cementation steps and several CaCO 3 polymorphs precipitated from mixed marine and freshwaters. Evidence of bacterial remains suggests that biological activity helped to trigger cementation. C and O isotopic values obtained in the cements confirm the dominance of mixed marine and freshwaters composition. Exact knowledge of the start and finishing dates of slag dumping permits to tightly constrain the rapid cementation, which was already evident at least since AD 1924, that produced the beachrock, as well as its evolution towards its current fast and complete disappearance.","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135237533","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}
Pub Date : 2023-04-04DOI: 10.1007/s41513-023-00210-0
I. Martín-Méndez, Juan F. Llamas Borrajo, A. Bel-lan, J. Locutura
{"title":"Geochemical distribution in residual soils of Iberian Pyrite Belt (Spain)","authors":"I. Martín-Méndez, Juan F. Llamas Borrajo, A. Bel-lan, J. Locutura","doi":"10.1007/s41513-023-00210-0","DOIUrl":"https://doi.org/10.1007/s41513-023-00210-0","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"49 1","pages":"97 - 114"},"PeriodicalIF":1.3,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43642922","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}
Pub Date : 2023-03-28DOI: 10.1007/s41513-023-00209-7
M. J. Comas-Rengifo, J. García-Ramos, A. Goy, Laura Piñuela, J. J. Gómez, R. Paredes, Luis Carlos Suárez Vega
{"title":"Stratigraphy and Biochronostratigraphy of the Lower Pliensbachian (Jurassic) from the Asturian basin (Northern Spain)","authors":"M. J. Comas-Rengifo, J. García-Ramos, A. Goy, Laura Piñuela, J. J. Gómez, R. Paredes, Luis Carlos Suárez Vega","doi":"10.1007/s41513-023-00209-7","DOIUrl":"https://doi.org/10.1007/s41513-023-00209-7","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"49 1","pages":"73 - 96"},"PeriodicalIF":1.3,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48191332","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}
Pub Date : 2023-03-20DOI: 10.1007/s41513-023-00208-8
J. Lario, C. Spencer, T. Bardají
{"title":"Presence of boulders associated with an extreme wave event in the western Mediterranean (Cape Cope, Murcia, Spain): possible evidence of a tsunami","authors":"J. Lario, C. Spencer, T. Bardají","doi":"10.1007/s41513-023-00208-8","DOIUrl":"https://doi.org/10.1007/s41513-023-00208-8","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"49 1","pages":"115 - 132"},"PeriodicalIF":1.3,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41612612","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}
Pub Date : 2023-03-18DOI: 10.1007/s41513-023-00207-9
J. Fernandes, C. Arenas, J. Ortiz
{"title":"Quaternary fluvial carbonate deposits of the Almonda River Valley, Central Portugal","authors":"J. Fernandes, C. Arenas, J. Ortiz","doi":"10.1007/s41513-023-00207-9","DOIUrl":"https://doi.org/10.1007/s41513-023-00207-9","url":null,"abstract":"","PeriodicalId":54799,"journal":{"name":"Journal of Iberian Geology","volume":"49 1","pages":"133 - 167"},"PeriodicalIF":1.3,"publicationDate":"2023-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48765635","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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