PAN style="FONT-FAMILY: Verdana; COLOR: black; FONT-SIZE: 10pt" lang=EN-US>The Uplift Mechanism of Tongbai Complex in Mesozoic and Its Coupling Relationship with Nanyang Basin

• 责任者：Xu Guang (State Key Laboratory of Lithosphere Evolution ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Wang Erchie
• 刊名：Chinese Journal of Geology
• 出版年：2010
• 卷期：45(3)
• 关键词：隆起 ; uplifts ; 盆山耦合 ; basin range coupling ; 桐柏山 ; Tongbai Mountains
• 页码：p.626-652
• 图表：14 illus., 4 tables, 54 refs.
• 分类号：0300
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

PAN style="FONT-SIZE: 14pt" lang=EN-US>The Tongbaishan Mountains is located in the east part of the central orogenic belt of China，crossing the Hubei and Henan Provinces. Through field geological investigation，the authors found that the northern slope of the Tongbai Shan is steep，while the southern slop is relatively flat，suggesting that the Tongbaishan may have experienced southward tilting. ⁴⁰Ar/³⁹Ar geochronology results show that the tectonic uplift of the Tongbaishan initiated in Late Cretaceous (102～85 Ma). The subsidence of the Nanyang Basin，initiated in Cretaceous time，is directly controlled by the lateral extrusion of Tongbai complex，formed as a half graben，overlying on the metamorphic complex of the Tongbaishan along the Taibaiding detachment fault and overlap on the pre-Mesozoic rocks with different age of the east Qinling belt.