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AGE ASSIGNMENT OF THE MESOZOIC SOURCE ROCK IN LABUDALIN BASIN, NORTHERN DAXINGANLING MOUNTAINS |
ZONG Wen-ming, ZHANG Hai-hua, SUN Lei, BIAN Xiong-fei, ZHANG Jian, YAO Yu-lai |
Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China |
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Abstract The thick Mesozoic mudstones are well developed in the Labudalin Basin. The strata with characters of hydrocarbon source rock mainly occur in the middle and lower part of the 1st Member, Shangkuli Formation. A section of the 1st Member of Shangkuli Formation was surveyed at 491 km of the Labudalin-Xiakuli highway, in which tuff was found below thick muddy shale. LA-ICP-MS dating for the tuff sample yields an age of 156.7±1.8 Ma(MSWD=2.0), indicating that the source rocks were formed in Late Jurassic. Therefore it is assigned to Manketouebo Formation. This result adds a dating datum to the Mesozoic chronostratigraphic study in northern Daxinganling Mountains, and provides basic information for source rock strata searching in the volcanic rock-covered regions as well.
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Received: 20 March 2017
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[1] |
CHEN Hui-jun, CUI Tian-ri, QIAN Cheng, LI Lin-chuan, CHEN Jing-sheng, LI Wei, WU Xin-wei, JIANG Bin, SI Qiu-liang, QIN Tao, TANG Zhen, ZHANG Yu-jin, GUO Wei. ZIRCON U-Pb GEOCHRONOLOGY OF BASHENGHE PLUTON IN NORTHERN DAXINGANLING MOUNTAINS: Geological Implications[J]. GEOLOGY AND RESOURCES, 2019, 28(5): 405-412. |
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