文章基本信息

标题：Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland
本地全文：下载
作者：Andrzej Kaim ; Przemysław Sztajner
期刊名称：Acta geologica Polonica
印刷版ISSN：0001-5709
出版年度：2012
卷号：62
期号：3
页码：381-395
语种：English
出版社：Institute of Geology, University of Warsaw
摘要：The environment at the Gnaszyn section – as deduced from bivalve and scaphopod dynamics – was controlled by the substrate consistency and possibly oxygen deficiency near the sediment-water interface and/or oxygen content fluctuations. The middle part of the section dominated by nuculoid and corbulid bivalves and Laevidentalium-type scaphopods probably reflects a soupy substrate and possibly oxygen deficiency in the sediment. Slightly coarser and better-oxygenated silts in the upper and lower parts of the section offered a less soupy substrate consistency, allowing the development of communities dominated by astartids, byssate bivalves, and Dentalium- and Plagioglypta-type scaphopods.
关键词：Poland;Gnaszyn;Ore-bearing clays;Jurassic;Bathonian;Palaeoecology;Bivalves;Scaphopods.