globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.03.029
论文题名:
Depositional biofacies model for post-OAE1a Aptian carbonate platforms of the western Maestrat Basin (Iberian Chain, Spain)
作者: Gili E.; Skelton P.W.; Bover-Arnal T.; Salas R.; Obrador A.; Fenerci-Masse M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 453
起始页码: 101
结束页码: 114
语种: 英语
英文关键词: Aptian ; Carbonate platforms ; Maestrat Basin ; Palaeoecology ; Rudists ; Spain
英文摘要: Two well exposed platform successions of late Early Aptian age developed in the central part of the Galve subbasin of the Maestrat Basin: the highstand 'Camarillas-El Morrón' platform, and the succeeding 'Las Mingachas' small lowstand platform, built out downslope in the former basin. Both platforms had a flat-topped non-rimmed depositional profile, showing similar platform-top to slope biofacies,which are described here in both qualitative and quantitative terms. The proximal platform top succession is characterized by a Toucasia-dominated rudist association. The margins of the two platforms consist of massive limestone characterized by a Polyconitesdominated association, in which clusters of Polyconites hadriani in life position are joined by both branching and domal corals, as well as the oyster-like Chondrodonta and nerineid gastropods. In Las Mingachas platform, where the massive rudist- and coral-rich platform limestones pass laterally into the slightly more marly and recessive clinoforms of the upper slope facies, Polyconites is especially abundant. Basinwards these slope deposits pass into basinal marls with orbitolinids and ammonoids. The distribution of the two distinct rudist associations recognized here is attributed to the different environmental tolerances of the rudists with respect to such factors as current regime and rate of sedimentation. The prevalence of polyconitids, in place of caprinids, in these late Early Aptian platform margin facies makes a striking contrast with older, earliest Aptian platforms. © 2016.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68418
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作者单位: Departament de Geologia, Facultat de Ciències, Universitat Autònoma de Barcelona, Edifici Cs, Bellaterra (Cerdanyola del Vallès), Spain; Department of Environment, Earth and Ecosystems, The Open University, Milton Keynes, United Kingdom; Departament de Geoquímica, Petrologia i Prospecció Geològica, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, Barcelona, Spain; CEREGE, Université de Aix-Marseille, Centre Saint Charles, Marseille Cedex 3, France

Recommended Citation:
Gili E.,Skelton P.W.,Bover-Arnal T.,et al. Depositional biofacies model for post-OAE1a Aptian carbonate platforms of the western Maestrat Basin (Iberian Chain, Spain)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,453
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