东秦岭东段五垛山花岗伟晶岩锆石U-Pb年代学和微量元素特征及地 …
Citation: Chen Xiaozhen, Chen Guochao, Li Ruibao, Zhang Yafeng, Ji Xianjun, Zhang Xiaofei, 2023. Zircon U-Pb Geochronology and Trace Element Characteristics of Wuduoshan Granitic Pegmatite in Eastern Part of East Qinling and Its Geological Significance.
东秦岭稀有金属伟晶岩成矿规律 - ysxb.ac.cn
2024年9月7日 · East Qinling, the eastern segment of the North Qinling orogen, is one of the most important rare-metal metallogenic belts in China, hosting almost 7000 pegmatite dikes that are mainly confined within four pegmatite districts (namely Luanzhuang, Guanpo, Longquanping and …
东秦岭花岗伟晶岩中电气石地球化学特征及成矿指示意义
2022年2月8日 · 本文所研究电气石为作为东秦岭各类伟晶岩贯通矿物的黑电气石系列。. 在双峰村、碾盘及风原无矿化伟晶岩中，黑电气石生长环带发育，单偏光下呈蓝绿色-棕色，具有较高的Mg、Ti、Sc含量，较低Li、Mn、Zn含量， δ11 B值变化较大（约-19.00‰~-12.00‰）。. 街子沟富 ...
东秦岭金堆城花岗斑岩体的锆石U-Pb年龄、物质来源及成矿机制
摘要: 通过LA-ICP-MS方法测得金堆城和老牛山花岗岩体中锆石U-Pb年龄分别为143.7±3 Ma和144.5±4.4 Ma，与金堆城钼矿床中辉钼矿的Re-Os年龄139±3.0 Ma在误差范围内一致，界定了金堆城成岩成矿时代为侏罗纪末-白垩纪初，2个岩体为同期岩浆事件的产物，与燕山运动有关.金 ...
东秦岭官坡地区稀有金属伟晶岩成矿机制 - ysxb.ac.cn
2024年9月8日 · The East Qinling pegmatite district is a famous rare-metal production area, and it is the largest pegmatite district hosting abundant rare element (REL) in the Qinling orogenic belt.
东秦岭镇平县南湾组碎屑锆石U-Pb年代学及地质意义
Abstract: The East Qinling Mountains, located at the junction of the Qinling Orogenic Belt and the Dabie Orogenic Belt, had undergone complex tectonic evolution, and plays an important role in understanding the collision of the North China Block and the Yangtze Block.
东秦岭—大别造山带南、北缘晚白垩世以来构造演化的石英ESR年 …
2011年10月26日 · 运用α石英热活化ESR定年法对东秦岭—大别造山带南、北缘58件样品进行了研究。. 结果显示，东秦岭—大别造山带南、北缘ESR年龄范围主要集中在晚白垩世以来 (99.2~3.4 Ma)。. 结合区域地质事实分析，晚白垩世以来，东秦岭—大别造山带南缘的构造演化可划分为73 ...
东秦岭卢氏盆地中始新世沉积-充填过程及其驱动机制
2024年2月2日 · The thick Cenozoic deposits in the Qinling intermountain basins are of great significance for understanding geomorphic evolution of the Qinling Mountains(Center China) and palaeoenvironment changes of East Asia.
秦岭新生代构造隆升与环境效应:进展与问题
The Qinling Orogen, a majestic high mountain, is located in the center of China mainland. Qinling Mountains is nearly 2 500 km from the west to the east. It holds a very prominent role not only in the geological but also in the geographical study. In geology, it was built through collision between the North China and South China Blocks.
东秦岭-大别山及其两侧的岩浆和变质事件年代学及其形成的大地构 …
2013年5月9日 · Key words: Geochronology Tectonic background Metamorphic event Magmatic event East Qinling-Dabie Mountains. 1 引言. 秦岭-大别造山带是一个碰撞型造山带，该造山带在秦岭地区从北到南可划分为五个构造单元 (附图 1)：华北陆块南缘变形带、北秦岭早古生代岛弧带、中秦岭地体、南秦岭 ...
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