Deep time global seawater (SST & SSC) records and far-field climatic & sealevel changes

古生代(从5.42亿年前到2.51亿年前)是一个非常事件和地质剧变的时期，如生命的非凡辐射、外星撞击和大规模灭绝，所有这些都被高山冰川和大陆冰川所打断。这项研究建议收集代理材料(即腕足类和三叶虫)，并检查地球化学证据(痕量和同位素化学)来表征这些事件。该项目的材料将来自两个主要来源，一个是在古生代反映泛太平洋(前驱太平洋)海洋学的日本海山上沉积的碳酸盐，另一个是北美大陆边缘的大而连续的层序。后一地点是独特和重要的，因为在古生代生物地理的背景下，层序在沉积学和地层学上得到了很好的界定。

The Paleozoic (from 542 to 251 million years ago) was a time of extraordinary events and geologic upheaval such as the extraordinary radiation of life, extraterrestrial impacts and mass extinctions, all punctuated by both alpine and continental glaciations. The study proposes to collect proxy material (i.e. brachiopods and trilobites) and examine the geochemical evidence (trace and isotope chemistry) to characterize these events. Material for this project will come from two major sources, one being carbonates deposited on seamount Japan during the Paleozoic reflecting Panthalassic Ocean (precursor Pacific) oceanography and from large and continuous successions at the North American continental margin. The latter localities are unique and important in that the successions are sedimentologically & stratigraphically well defined in the context of Paleozoic biogeography.