Beaver Dam Mountains-Tule Springs Hills-Mormon Mountains Thermochronology - 2015-01-22

Abstract: This dataset contains apatite and zircon (U-Th)/He data from the Beaver Dam Mountains, Tule Springs Hills, and Mormon Mountains of southwestern Utah and southeastern Nevada. The region is host to three major low-angle structures, the Castle Cliffs, Tule Springs, and Mormon Peak detachments, whose origin and role in regional extension are vigorously debated. We analyzed 36 samples collected from Precambrian basement gneisses and Paleozoic to Jurassic siltstones and sandstones exposed in the footwalls of these detachments. Samples from the Beaver Dam and Mormon mountains were collected earlier by Stockli (1999); samples from the Tule Springs Hills were collected during the course of this study. Other Description: Bidgoli, T.S., Stockli, D.F., and Walker, J.D., in press, Low-temperature thermochronologic constraints on the kinematic histories of the Castle Cliffs, Tule Springs, and Mormon Peak detachments, southeastern Nevada and southwestern Utah: Geosphere Stockli, D.F., 1999, Regional timing and spatial distribution of Miocene extension in the northern Basin and Range province [Ph.D. thesis]: Stanford, California, Stanford University, 239 pp.摘要：本数据集包含采自犹他州西南部与内华达州东南部比弗达姆山（Beaver Dam Mountains）、图莱斯普林斯丘陵（Tule Springs Hills）及摩门山（Mormon Mountains）的磷灰石与锆石（U-Th）/He热年代学数据。该区域发育三大主要低角度构造——卡斯尔克利夫斯拆离断层（Castle Cliffs detachment）、图莱斯普林斯拆离断层（Tule Springs detachment）与摩门峰拆离断层（Mormon Peak detachment），其成因及其在区域伸展作用中的角色至今仍存在激烈争议。本研究对采自上述拆离断层下盘出露的前寒武纪基底片麻岩，以及古生代至侏罗纪粉砂岩与砂岩的36件样品进行了分析。其中，采自比弗达姆山与摩门山的样品由Stockli（1999）早前采集；采自图莱斯普林斯丘陵的样品则为本研究期间采集所得。 其他说明：Bidgoli, T.S.、Stockli, D.F.与Walker, J.D.已接受待刊，《内华达州东南部与犹他州西南部卡斯尔克利夫斯、图莱斯普林斯及摩门峰拆离断层运动学历史的低温热年代学约束》，刊载于《Geosphere》。 Stockli, D.F., 1999, 《北部盆岭省中新世伸展作用的区域时序与空间分布》[博士学位论文]：加利福尼亚州斯坦福，斯坦福大学，239页。