COLLABORATIVE RESEARCH: Integrated Paleoceanographic Analysis of the Late Paleozoic Midcontinent Sea

合作研究：晚古生代中陆海的综合古海洋学分析亚利桑那州州立大学。托马斯-1052988阿尔吉奥，科林纳提大学，詹姆斯-1053449詹姆斯-巴里克，得克萨斯理工大学，詹姆斯-1053042贝恩德奥普特，宾夕法尼亚州立大学，詹姆斯-1052998摘要由于古代环境条件和古地理背景的不同，一些过去的沉积环境没有很好的现代类比。例如，以前的解释的环境条件的黑色页岩沉积集中在应用现代类似物的沿海涌升或？黑海型？盆地地形 然而，最近提出了一个超河口环流模式来解释北美大陆中部古生代丰富而广泛的黑色页岩沉积。这是本研究项目的目的，使用跨学科的方法来调查古海洋条件的沉积过程中的宾夕法尼亚旋回层的北美大陆中部，并测试？超河口环流假说这项工作是一个全面的数据模型合成研究和地球化学代理（锶和氧同位素的生物磷灰石;散装主要和微量元素丰度数据，TOC-TIC-S浓度和岩相数据）将进行比较，生物相分布模式和数值海洋环流模型的结果。资金为几所大学的本科生提供研究机会，并将支持一篇博士论文。

COLLABORATIVE RESEARCH: Integrated Paleoceanographic Analysis of the Late Paleozoic Midcontinent SeaAchim Herrmann, Arizona State University. EAR-1052988Thomas Algeo, Univ. Cincinnatti, EAR-1053449James Barrick, Texas Tech University, EAR-1053042Bernd Haupt, Penn State University, EAR-1052998ABSTRACTDue to different environmental conditions and paleogeographic settings of ancient times, some past sedimentary environments have no good modern analogues. For instance, previous interpretations of environmental conditions of black shale deposition centered on applying modern analogs of coastal upwelling or ?Black-Sea type? silled basin topographies. However, a superestuarine circulation model has been proposed recently to explain the abundant and widespread Paleozoic black shale deposits of Midcontinent North America. It is the purpose of this research project to use an interdisciplinary approach to investigate paleoceanographic conditions during the deposition of Pennsylvanian cyclothems of Midcontinent North America and to test the ?superestuarine circulation hypothesis?. This work is a comprehensive data-model synthesis study and geochemical proxies (strontium and oxygen isotopes of biogenic apatite; bulk major- and trace-element abundance data, TOC-TIC-S concentrations, and petrographic data) will be compared to biofacies distribution patterns and to results of numerical ocean circulation models. Funding provides research opportunities for undergraduates at several universities and will support one PhD thesis.