Orbital Forcing of Continental Eocene Climate: The Green River Formation of Wyoming

该奖项是为了表彰在广泛的岩心和露头的基础上，对怀俄明州大绿河盆地始新世早期至中期绿河组的详细物理旋回地层学的发展和定量分析。该研究将使用三套湖泊深度和气候的代用指标：沉积相（深度等级）、岩心上可用的页岩油产量数据和地球物理测井。外部时间限制将基于阀门校准和地层内凝灰岩的单晶40 Ar/39 Ar定年。年龄模型将从这些约束以及数据的定量频率分析中发展出来。因此，该研究将能够生成始新世早期和中期大部分时间的轨道调谐旋回地层学，分辨率小于2万年，与现有的详细岩石地层学、生物地层学和古地磁极性地层学相匹配。

This award is for the development and quantitative analysis of a detailed physical cyclostratigraphy of the early to middle Eocene Green River Formation of the greater Green River Basin of Wyoming based on extensive cores and outcrops. The study will use three suites of proxies for lake depth and hence climate: sedimentary facies (depth ranks), available shale oil yield data on cores, and geophysical logs. External time constraints will be based on varve calibration and single crystal 40 Ar/39 Ar dating of tuffs within the formation. Age models will be developed from these constraints as well as quantitative frequency analysis of the data. Thus, the study will be able to produce an orbitally tuned cyclostratigraphy for much of the early and middle Eocene, with a resolution of less than 20,000 years, registered to the existing detailed lithostratigraphy, biostratigraphy, and paleomagnetic polarity stratigraphy.