Neogene Climatic and Depositional Evolution of the Eastern Basin and Range: Integrated Paleoecologic and StratigraphicAnalyses of the Great Salt Lake, Utah

PIS将通过整合来自大盐湖的古生态、地层和地震数据，分析美国东部盆地和山脉的新近纪气候和沉积演化。材料来源为Amoco，包括岩心、岩屑、样品和地震线。ıPI从构造计划获得资金，用于项目的盆地分析方面。主要目标是检验最近为北美西部新近纪提出的气候变化假说，方法是1)记录新近纪凉爽、干燥气候的开始和发展，2)通过特弗莱斯和玄武岩的辐射测年建立年表，3)从单一地区产生详细的气候记录，目前仅从不同沉积物的重叠片段中了解到这一时期。它们还将a)编制大盆地新近纪植被演化年表，b)编制新近纪古陆相研究，c)研究冰川/间冰期气候周期的开始和演化。

PIs will analyze Neogene climatic and depositional evolution of the eastern Basin and Range (US) by integrating paleoecologic, stratigraphic and seismic data from the Great Salt Lake. Source of material is Amoco and includes cores, cuttings, samples, and seismic lines. ıPIs have funding from TEctonics program for basin analysis aspects of project.! Primary objective is to test hypotheses of climate change recently proposed for Neogene of western North America by 1) documenting onset and development of cool, dry climate in Neogene, 2) developing chronology through radiometric dates on tephras and basalts, 3) producing detailed climate record from a single region, for a time now known only from overlapping segments from diverse deposits. They will also a) develop a chronology for Neogene evolution of vegetation in the Great Basin, b) produce Neogene paleolimnologic study of GSL, c) study onset and evolution of glacial/interglacial climatic cycles.