中国西部典型盆山结合带：西秦岭-临夏盆地深地震反射剖面沿线重要岩浆岩岩石地球化学测试数据集

The western Qinlingorogenic belt is located in the northeastern margin of the Qinghai-Tibet Plateau, and its lithosphere structure and change record the deep process information of the plateau to the northeast. The western Qinlingorogenic belt is also the prospect of resource development in China. Especially with the shortage of global oil, China's petroleum geology has accelerated the exploration of the new area. The western Qinlingorogenic belt and its both basins are listed as one of the worthy of oil and gas exploration strategic constituencies. On the basis of field observation, the important geological bodies along the deep seismic reflection profiles across the West Qinling Mountains and the Linxia Basin in the southern Qilian were sampled . In this paper, it takes the zircon U / Pb geology chronology, whole rock elements and isotopes (Sr and Nd) composition of the test work. The data set contains three data tables, including the zircons LA-MC-ICP-MS data of the magmatic rocks from the western Qinlingorogenic belt and the Linxia basin (a total of 7 test samples, 145 test points, the test accuracy of (2) are 2%), major(%) and trace elements (×10-6) of investigated magmatic rocks (a total of 33 test samples, each sample has 69 test items, the content of more than 10 × 10-6 elements of the test accuracy of 5%, and less than 10 × 10-6 element accuracy of 10%), and whole-rock Sr and Nd isotopic data for magmatic rocks(Sr± 0.000010 (n = 18) and Nd± 0.000011 (n = 18), respectively) in the 27 test samples from the western Qinlingorogenic belt and the Linxia basin, The These data are used to determine the age and geochemical properties of different magmatic rocks, so as to better explain the tectonic significance represented by the deep geological structure revealed by the seismic reflection profile.

西秦岭造山带位于青藏高原东北缘，其岩石圈结构与演化记录了高原向东北方向拓展的深部过程信息。西秦岭造山带同时也是我国资源勘探开发的重要靶区。尤其在全球油气资源短缺的背景下，我国石油地质学界加快了新区勘探的步伐，西秦岭造山带及其两侧盆地被列为我国极具油气勘探战略价值的重点选区之一。
研究团队在野外观测的基础上，对横穿西秦岭及南祁连地区临夏盆地的深地震反射剖面沿线的重要地质体进行了系统采样。本研究针对采集样品开展了锆石U-Pb地质年代学、全岩主量与微量元素以及Sr、Nd同位素组成的测试分析工作。
本数据集包含三张数据表，分别为：西秦岭造山带与临夏盆地岩浆岩的锆石LA-MC-ICP-MS（激光剥蚀多接收杯电感耦合等离子体质谱）测试数据（共7个测试样品、145个测试点位，测试精度为±2%）；研究区岩浆岩的主量元素（单位：%）与微量元素（单位：×10^-6）测试数据（共33个测试样品，每个样品含69项测试指标，其中含量大于10×10^-6的元素测试精度为±5%，含量小于10×10^-6的元素测试精度为±10%）；以及西秦岭造山带与临夏盆地27个岩浆岩样品的全岩Sr、Nd同位素数据（Sr同位素测试误差为±0.000010，n=18；Nd同位素测试误差为±0.000011，n=18）。
上述数据可用于厘定不同岩浆岩的形成年代与地球化学特征，进而更好地阐释深地震反射剖面所揭示的深部地质构造所蕴含的构造意义。

搜集汇总

背景与挑战

背景概述

该数据集聚焦中国西部西秦岭造山带和临夏盆地的深地震反射剖面沿线岩浆岩，通过锆石U/Pb年代学、全岩元素和Sr-Nd同位素测试，提供了7个样本的锆石数据、33个样本的元素数据和27个样本的同位素数据，用于确定岩浆岩年龄和地球化学性质，以解释该区域深部地质构造的构造意义和油气勘探潜力。