%0 Journal Article
%T Characteristics and tectonic setting of Late Cretaceous volcanic magmatism in the coastal Southeast China<br>东南沿海晚白垩世火山岩浆活动特征及其构造背景
%A XING GuangFu
%A CHEN Rong
%A YANG ZhuLiang
%A ZHOU YuZhang
%A LI LongMing
%A JIANG Yang
%A CHEN ZhiHong
%A <br>邢光福
%A 陈荣
%A 杨祝良
%A 周宇章
%A 李龙明
%A 姜杨
%A 陈志洪
%J 岩石学报
%D 2009
%I 
%X Late Cretaceous volcanic magmatisms in the coastal Southeast China are weak and lack enough studies, but have significant tectonic implications. This paper reports studies on Late Cretaceous Xiaoxiong Formation and Shiniushan Formation volcanic rocks and associated plutonic rocks in Zhejiang and Fujian provinces. Zircon ages of both central intrusion facies syenite-porphyry at Xiaoxiong caldera and syenogranite-porphyry at Shiniushan caldera are 87.9±1.2Ma and 93.8±1.3Ma respectively. Based on their petrological and geochemistric features, these rocks are proved to be post-orogenic A-type granitoids. They were generated during intenser extension of lithosphere after formation of the huge Cretaceous A-type granite belt in the coastal Southeast China, and belong to the latest felsic magmatism in Mesozoic. It is inferred that the Yanshanian orogeny ended at ca. 90Ma.
%K Tectonic setting
%K Post-orogenic A-type granitoids
%K Late Cretaceous volcanic magmatism
%K Coastal Southeast China<br>构造背景
%K 后造山A型花岗质岩类
%K 晚白垩世火山岩浆活动
%K 浙闽沿海
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=B50CCF2928D34D78B89D2D4E6C4C2279&yid=DE12191FBD62783C&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=E44E40A2398D4F2A&eid=C753EB8AC8F551B9&journal_id=1000-0569&journal_name=岩石学报&referenced_num=3&reference_num=78