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The Thickness of the Thermal Lithosphere in the Panxi Paleorift Zone, Southwestern China

  • Wang Ji-Yang
  • Huang Shao-Peng
Part of the Exploration of the Deep Continental Crust book series (EXPLORATION)

Abstract

The Panxi area of southwestern China is a paleorift zone of Hercynian—Indosinian age. The last major tectonothermal event occurred 200 to 250 Ma ago with extensive basaltic eruption. Based on heat flow measurements, thermal conductivity and radiogenic heat production determinations of rock samples, geotherms of the crust and upper mantle and the thickness of the thermal lithosphere are calculated and derived. Results indicate that the temperature distribution within the lithosphere of the Panxi Paleorift Zone is uneven both laterally and vertically. Moho temperature varies from 840 to 1060° C with an average of 940° C corresponding to an average Moho depth of 55 km in the region studied. The thickness of the thermal lithosphere derived from geothermal data ranges from 75 to 98 km with an average of 88 km, which is in good accordance with the results obtained from other geophysical investigations.

Keywords

Heat Flow Moho Depth Heat Flow Measurement Heat Flow Data Lithosphere Thickness 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • Wang Ji-Yang
  • Huang Shao-Peng
    • 1
  1. 1.Institute of GeologyAcademia SinicaBeijingChina

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