DIFFERENCES OF CRUSTAL STRUCTURES AND TECTONIC
SIGNIFICANCE ON BOTH SIDES OF CENTRAL TANLU FAULT ZONE
Geophysical Exploration Center，CEA，Zhengzhou 450002
Abstract There are two distinct tectonic units on both sides of central Tanlu fault zone.The west sides of Tanlu fault belongs to Luxi uplift of Huabei plate，while the east sides of it belongs to Sulu block of Yangzi plate.There are obvious differences between Luxi uplift and Sulu block，which was derived from two blocks’ collision and strong reformation of crust at the later geologic period.The1D velocity models of the two blocks were obtained，using reflectivity methods and simulated calculation of deep seimic sounding wide angle reflection and refraction profiles.By The contrast analysis，show the Moho depth of Luxi uplift is deeper than that of Sulu block by 7 km，while the average velocity of crust in Sulu block is only 5.94 km/s，which is much lower than the average velocity of Luxi uplift（6.34 km/s).This is related to late strong reformation of the lithosphere in Sulu block.The collision of Yangzi and Huabei plate，subduction of the plate，strongly compression，exhumation and magma underplating.lead to this strong reformation of the crust.
Key words ：
Tanlu fault
Luxi uplift
Sulu uplift
DSS
crustal structure
Received: 01 September 2013
Published: 26 September 2014
Cite this article:
. DIFFERENCES OF CRUSTAL STRUCTURES AND TECTONIC
SIGNIFICANCE ON BOTH SIDES OF CENTRAL TANLU FAULT ZONE[J]. jgg, 2014, 34(5): 50-54.
. DIFFERENCES OF CRUSTAL STRUCTURES AND TECTONIC
SIGNIFICANCE ON BOTH SIDES OF CENTRAL TANLU FAULT ZONE[J]. jgg, 2014, 34(5): 50-54.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I5/50
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