• 责任者：Ge Mengchun (Faculty of Earth Sciences ; China University of Geosciences ; Wuhan 430074 ; China) ; Zhou Wenxiao
• 刊名：Earth Science Frontiers
• 出版年：2011
• 卷期：18(5)
• 关键词：杂岩 ; complexes ; 表壳岩 ; supracrustal rock ; 内蒙古 ; Inner Mongolia
• 页码：p.182-195
• 图表：8 illus., 7 tables, 13 refs.
• 分类号：0802
• 出版序号：1669
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

There are different opinions on the existence of microcontinents in Central Asian Orogenic Belt (CAOB) and on the formation age and original rock property of the widely outcropped Xilin Gol Complex. The authors proposed to disintegrate the Xilin Gol Complex and select the supercrustal rocks there among to be named as "Xilinhot Group", which are aluminum-rich argillaceous clastic rocks with amphibolite facies metamorphism and with volcanic and magnetite-quartzite intercalated. The group was emplaced by a metagabbro at 739.6 Ma (SHRIMP age) and by an S-type gneissose tourmaline two-mica granite formed during the Ordovician with the zircon metamorphotic cores of U-Pb ages concentrated in 1 005~1 026 Ma. The study of isotopic geochronology also shows that the group was reformed by a series of thermal events later.