Science in China Series D: Earth Sciences

, Volume 47, Issue 2, pp 128–137 | Cite as

Geochemistry of the ophiolite and oceanic island basalt in the Kangxian-Pipasi-Nanping tectonic mélange zone, South Qinling and their tectonic significance

  • Shaocong Lai
  • Guowei Zhang
  • Xianzhi Pei
  • Haifeng Yang
Article

Abstract

Detailed studies indicate that Kangxian-Pipasi-Nanping tectonic zone is a complicated mélange zone which includes many tectonic slabs of different origins. Ophiolite (MORB-type basalt), oceanic island tholeiite and alkaline basalt have been identified. Moreover, this tectonic mélange zone is eastward connected with the Mianlüe suture zone. The deformation characteristics, consisting components and volcanic rock geochemical features for the Kangxian-Pipasi-Nanping tectonic mélange zone are much similar to those of the Mianlüe suture zone and Deerni ophiolite. Therefore, the Kangxian-Pipasi-Nanping tectonic mélange zone should be the westward extension part of the Mianlüe suture zone. It indicates that the Mianlüe suture zone had extended to the Nanping area.

Keywords

ophiolite and volcanic rock  geochemistry tectonic settings Kangxian-Pipasi-Nanping Mianlüe suture zone 

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Copyright information

© Science in China Press 2004

Authors and Affiliations

  • Shaocong Lai
    • 1
  • Guowei Zhang
    • 1
  • Xianzhi Pei
    • 1
  • Haifeng Yang
    • 1
  1. 1.Key Laboratory of Continental Dynamics, Ministry of Education and Department of GeologyNorthwest UniversityXi’anChina

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