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Ammonites and associated macrofauna from the early Late Albian of the Zippelsförde 1/64 core,NE-Germany
Early Cretaceous Albian Biostratigraphy E-Germany Borehole Correlation Macrofauna Ammonites
2009/10/20
The macrofaunal content of an exceptionally fossiliferous Late Albian core section is described from Zippelsförde in the Brandenburg district in eastern Germany. The main faunal horizon includes ...
藏北措勤盆地早白垩世Aptian-Albian台地型浅水碳酸盐岩的δ 13C值分布于2.48‰~5.46‰之间, 平均值为3.93‰. 不仅具有正偏移特征, 而且比具有较高δ 13C值的同期深水碳酸盐岩的δ 13C值还平均偏高1.17‰. 研究表明其成因为, 首先在全球大洋缺氧事件背景下, 有机质的高速埋藏使海洋总溶解碳库中δ 13C值升高, 致使所有海相碳酸盐岩的δ 13C值普遍升高; 然后在具...
Shale Diagenesis: A Case Study from the Albian Harmon Member (Peace River Formation), Western Canada
Clay mineralogy Quantitative shale mineralogy Silicate diagenesis
2011/12/31
Shales have often been cited as the source of authigenic material that occurs in coarser grained sediments, but there are few comprehensive studies of diagenesis in shales that rigorously attempt to d...