Metamorphic evolution of the Kamuikotan high-pressure and low- temperature metamorphic rocks in central Hokkaido, Japan

M. Sakakibara, T. Ota

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The Kamuikotan complex in the Sorachi-Yezo belt has been extensively subjected to subduction-related high-pressure and low-temperature metamorphism. On the basis of geological, petrological, and geochronological data, the coherent metamorphic rocks are divided into six units which can be classified into the following three baric types: high-pressure 1, high-pressure 2, and high-pressure intermediate. The results, together with the previously published K-Ar and 40Ar-39Ar ages, suggest that the Kamuikotan metamorphic rocks gradually decreased in pressure during the Cretaceous. This tendency indicates an increase in the Kamuikotan subduction geotherm during Early Cretaceous to early Eocene time. -from Authors

Original languageEnglish
Pages (from-to)22,221-22,235
JournalJournal of Geophysical Research
Volume99
Issue numberB11
DOIs
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Fingerprint Dive into the research topics of 'Metamorphic evolution of the Kamuikotan high-pressure and low- temperature metamorphic rocks in central Hokkaido, Japan'. Together they form a unique fingerprint.

  • Cite this