COLLABORATIVE RESEARCH: Magnitude, Timing, and Paleo- geographic Significance of Mesozoic Compression and Cenozoic Extension in the Central Mojave Desert, CA

该项目是一个多学科协作的构造 对加州南部莫哈韦沙漠地区的调查 将由犹他州大学的工作人员进行 （EAR 89 -16838，堪萨斯大学（EAR 89 -16802）和 北卡罗来纳州大学（EAR 89 -17291）。 这项研究将 评估晚侏罗世褶皱冲断带的连续性 在克罗内塞山，可能会继续向西南， 确定白垩纪和更年轻的时期 在这个构造带上 的规模和空间分布 将研究中莫哈韦的第三纪延伸。 的 工作将集中在野外绘图、地质年代学和变质作用方面。 莫哈韦西部前第三纪岩石的岩石学， 中第三纪填图、年代学和盆地分析 莫哈韦中部的同构造沉积。 结果将 有助于北西南地区的区域构造综合 美国和表征的过程中， 大陆边缘造山带的构造演化和大规模的 地壳的规模叠加伸展。

This project is a collaborative multidisciplinary tectonic investigation of the Mojave Desert region of southern California that will be conducted by workers at the University of Utah (EAR89-16838, The University of Kansas (EAR89-16802) and the University of North Carolina (EAR89-17291). The study will assess the continuity of a late Jurassic fold-thrust belt found in the Cronese Hills that may continue to the southwest and will determine how much Cretaceous and younger overprint there may be on this tectonic belt. The magnitude and spatial distribution of Tertiary extension in the Central Mojave will be studied. The work will focus on field mapping, geochronology and metamorphic petrology of pre-Tertiary rocks in the western Mojave and mapping, geochronology and basin analysis of mid-Tertiary syntectonic deposits in the central Mojave. Results will contribute to regional tectonic syntheses of southwestern North America and to characterization of processses governing the tectonic evolution of continental-margin orogens and the large- scale superimposed extension of the crust.