青藏高原可可西里带西段卧龙岗二长花岗斑岩锆石SHRIMP U-Pb定年及其地质意义

Zircon SHRIMP U-Pb dating of the Wolonggang monzogranite porphyry in the western segment of the Hoh Xil belt,Qinghai-Tibet Plateau and its geological significance

对可可西里带西段卧龙岗二长花岗斑岩岩体进行锆石SHRIMPU-Pb年龄测定,获得212.5Ma±3.6Ma的岩体结晶年龄。认为黑石北湖-三道河子岩浆岩带经历了晚三叠世同碰撞造山作用。

Zircon SHRIMP U-Pb dating of the Wolonggang monzogranite porphyry in the western segment of the Hoh Xil belt yields a crystallization age of 212.5±3.6 Ma for the intrusion. The authors consider that the Heishibeihu-Sandaohezi magmatic belt went though Late Triassic syncollisional orogeny.