Transverse Variations of Crustal Thickness and V_p/V_s Ratio under the Stations in the Liaodong Anteclise-Yanshan Belt-Xingmeng Orogenic Belt and Their Tectonic Implications

详细信息   

• 责任者：Wei Zigen (State Key Laboratory of Lithospheric Evolution ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Chen Ling
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(11)
• 关键词：造山带 ; orogenic belts ; 岩石圈 ; lithosphere ; 辽东湾 ; Liaodong Bay
• 页码：p.2799-2808
• 图表：4 illus., 2 tables, 39 refs.
• 分类号：0400
• 出版序号：20122231
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

The authors obtained the crustal thickness and average crustal V_p/V_s ratio along the profiles across the Liaodong anteclise, Yanshan belt and Xingmeng orogenic belt using H-κ stacking of receiver functions. The result shows that the average crustal thicknesses of these three tectonic units are 32, 33 and 35 km, respectively, indicative of slight differences, and display distinct transverse variations in the crustal structure.  The distinct crustal structures between the Yanshan belt and the Xingmeng orogenic belt are probably indicative of a more intense crustal modification in the Yanshan belt compared with the Xingmeng orogenic belt during Mesozoic-Cenozoic period.