Petrological and Geochronological Evidences of Tectonic Exhumation of Heilongjiang Complex in the Eastern Part of Heilongjiang Province , China
详细信息
- 责任者：Zhao Liangliang (College of Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Zhang Xingzhou
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(4)
- 关键词：杂岩 ; complexes ; 蓝片岩相 ; blueschist facies ; 氩—氩计时 ; Ar-Ar dating ; 黑龙江省 ; Heilongjiang Province
- 页码：p.1227-1234
- 图表：4 illus., 3 tables, 31 refs.
- 分类号：0802
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Heilongjiang complex, along the Mudanjiang fault in the western part of the Jiamusi massif, was due to the collision between the Jiamusi and Songnen massifs. The complex is composed predominately of strongly deformed mylonites with a large number of masses or slices of ultrabasite, blueschist, metasilicatite and marble in varied sizes and deformation. The relationships of metamorphism and deformation between undeformed masses and deformed mylonites indicate the Heilongjiang complex was at least subjected to two phase metamorophism of early high-pressure metamorphism and late lower P/T metamorphism associated by ductile deformation. This event is prevalently recorded in Heilongjiang complex in Jiayin, Yilan and Mudanjiang areas, indicating that the entire Heilongjiang complex experienced a major tectonic exhumation in the Early-Middle Jurassic.
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