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August 5, 2026LithosphereOpen Access

Paleozoic Tectonic Transition from Arc–Continent Collision to Post-Orogenic Extension in the East Kunlun Orogen: Constraints from Metamorphic Events

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Authors

JXJinyu XiaoDHDengfeng HeYDYunpeng Dong

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Overview

Randomized trial analyzes metamorphic events in the East Kunlun Orogen, indicating tectonic transitions.

Key Points

  • This study aims to reveal the tectonic evolution of the East Kunlun Orogen through the analysis of metamorphic events.
  • Integrated analysis of petrology, mineral thermobarometry, and zircon U–Pb geochronology
  • Characterization of garnet–sillimanite–biotite gneisses and garnet–biotite migmatitic gneisses
  • Assessment of P–T paths to understand tectonic changes.
  • Garnet–sillimanite–biotite gneisses show peak conditions of ~763°C and 10.3 kbar at 422–424 Ma
  • Garnet–biotite migmatitic gneisses indicate conditions of >830°C and ~4.4 kbar at 402 ± 2 Ma
  • The findings suggest a transition from arc–continent collision to extension marked by lithospheric delamination.

Cite This Study

Xiao et al. (2026) studied this question.

synapsesocial.com/papers/6a72e7e2226790f3706573e1https://doi.org/10.2113/lithosphere_2025_191
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