globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.06.015
论文题名:
Geobiology of a lower Cambrian carbonate platform, Pedroche Formation, Ossa Morena Zone, Spain
作者: Creveling J.R.; Fernández-Remolar D.; Rodríguez-Martínez M.; Menéndez S.; Bergmann K.D.; Gill B.C.; Abelson J.; Amils R.; Ehlmann B.L.; García-Bellido D.C.; Grotzinger J.P.; Hallmann C.; Stack K.M.; Knoll A.H.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 386
起始页码: 459
结束页码: 478
语种: 英语
英文关键词: Archaeocyath ; Cambrian ; Carbonate ; Skeletons ; Thrombolite
英文摘要: The Cambrian Pedroche Formation comprises a mixed siliciclastic-carbonate succession recording subtidal deposition on a marine platform. Carbonate carbon isotope chemostratigraphy confirms previous biostratigraphic assignment of the Pedroche Formation to the Atdabanian regional stage of Siberia, correlative to Cambrian Series 2. At the outcrop scale, thrombolitic facies comprise ~. 60% of carbonate-normalized stratigraphy and coated-grains another ~. 10%. Petrographic point counts reveal that skeletons contribute at most 20% to thrombolitic inter-reef and reef-flank lithologies; on average, archaeocyath clasts make up 68% of skeletal materials. In contrast, petrographic point counts show that skeletons comprise a negligible volume of biohermal and biostromal thrombolite, associated nodular carbonate facies, and ooid, oncoid and peloid grainstone facies. As such, archaeocyathan reefal bioconstructions represent a specific and limited locus of skeletal carbonate production and deposition. Consistent with data from coeval, globally dispersed lower Cambrian successions, our analysis of the Pedroche Formation supports the view that lower Cambrian carbonates have more in common with earlier, Neoproterozoic deposits than with younger carbonates dominated by skeletal production and accumulation. © 2013 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69645
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作者单位: Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, United States; Centro de Astrobiología (INTA-CSIC), INTA Campus, 28850 Torrejón de Ardoz, Spain; Departamento de Estratigrafía, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, 28041 Madrid, Spain; Museo Geominero, Instituto Geológico y Minero, 28003 Madrid, Spain; Division of Geological and Planetary Sciences, California Institute of Technology, CA 91125, United States; Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, United States; The Agouron Institute, Pasadena, CA 91106, United States; Centro de Biología Molecular Severo Ochoa, Universidad Autónoma de Madrid, 28048 Madrid, Spain; Sprigg Geobiology Centre, School of Earth and Environmental Sciences, University of Adelaide, SA 5005, Adelaide, Australia; Max-Planck-Institute for Biogeochemistry, 07745 Jena, Germany; MARUM, Universität Bremen, 28359 Bremen, Germany; Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, United States

Recommended Citation:
Creveling J.R.,Fernández-Remolar D.,Rodríguez-Martínez M.,et al. Geobiology of a lower Cambrian carbonate platform, Pedroche Formation, Ossa Morena Zone, Spain[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,386
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