Zircon U-Pb age of the quartz diorite in North Daqing mountains, central Inner Mongolia
Zircon U-Pb age of the quartz diorite in North Daqing mountains, central Inner Mongolia
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发表时间：
2004
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通讯作者：
Liu Jun-jie
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作者：
Liu Jun-jie
侵位于晚太古代瑟尔腾山群的前豪石英闪长岩与斜长花岗岩构成了晚太古代花岗绿岩带的一部分。石英闪长岩的石油化学和地球化学研究显示其为i型花岗岩，符合太古宙高铝TTG花岗岩的特征。它们可能是不同烃源岩在地幔岩浆的参与下部分熔融形成的。从石英闪长岩中选取的5颗锆石经岩浆结晶，构成U-Pb上交汇年龄（2535±16）Ma，代表了岩体的结晶年龄，为华北克拉通地壳演化提供了新的证据
The Qianhao quartz diorites emplaced in Late Archean Se'ertengshan Group composes a part of the Late Archean granite-greenstone belt with plagiogranites. Petrochemical and geochemical research of quartz diorites shows the features I-type granites and accord with Archean high-aluminum TTG granites. They might be resulted through partial melting of different source rocks with participation of mantle magma. Five zircons selected from quartz diorites were crystallized from magma and constitute a U-Pb upper intersection age of (2535±16) Ma,which represents the crystalline age of the intrusion and providing new evidence for crustal evolution of North China Craton.