Collaborative Research: Extent, Style and Tectonic Significance of Pennsylvania Deformation in the Great Basin: A Test of Late Paleozoic Tectonic Models for the Western U.S.

[903418] cashman西部大盆地宾夕法尼亚期通常被认为是泥盆纪鹿角期和二叠-三叠纪索诺玛造山期之间的相对构造静止期。然而，最近在内华达中北部的几座山脉中发现的紧密褶皱和逆冲至宾夕法尼亚中期的证据，对这种解释提出了质疑。该项目将尝试确定这种变形的程度，并根据这些新数据评估这一时期的几个现有模型。结果有望增加对美国西部晚古生代构造脉冲数量及其时间的了解。

9903418CashmanThe Pennsylvanian of the Western Great Basin is generally thought to be a time of relative tectonic quiescence between the Devonian Antler and the Permo-Triassic Sonoma Orogenies. However, recent evidence for tight folding and thrusting to middle Pennsylvanian age in several mountain ranges of North - Central Nevada has cast doubt on this interpretation. This project will attempt to determine the extent of this deformation and to evaluate several of the existing models for this time period in the light of these new data. Results are expected to increase knowledge of the number of tectonic pulses and their timing during the late Paleozoic of the Western United States.