Ichnofabric Analysis of Lower Ordovician Orthoceras Limestones, Southern Sweden

瑞典南部下奥陶统正角石灰岩的结构分析

• 批准号: 9404850
• 负责人: Allan Ekdale
• 金额: $ 8.4万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9404850&HistoricalAwards=false
• 关键词: Ichnofabric; Analysis; Lower; Ordovician; Orthoceras

9404850 Ekdale PI will describe trace fossils and ichnofabrics of the "Orthoceras limestones" in their stratigraphic and paleoenvironmental contexts, and thereby interpret the nature and structure of the infaunal organism communities. These fossils represent the only record of soft-bodied organisms during the early Ordovician, a time of first expansion of endobenthos following the Cambrian oxygen crisis in this area. Study will also reconstruct original substrate conditions, and the stages of compaction, cementation, and diagenesis as time progressed.

9404850 Ekdale PI 将描述“Orthoceras 石灰岩”在地层和古环境背景下的痕迹化石和化学结构，从而解释动物生物群落的性质和结构。 这些化石代表了奥陶纪早期软体生物的唯一记录，这是该地区寒武纪缺氧危机后底栖生物首次扩张的时期。 研究还将重建原始基质条件，以及随着时间的推移压实、胶结和成岩作用的阶段。