Tectonic implications of the hydrated garnet peridotites near Mt Kinabalu, Sabah, East Malaysia

Akira Imai, Kazuhito Ozawa

研究成果: ジャーナルへの寄稿学術誌査読

20 被引用数 (Scopus)


Hydrated garnetiferous peridotites form part of an ultramafic complex in the Mt Kinabalu area of Sabah, East Malaysia. Garnet peridotites are associated with abundant spinel lherzolites and rare plagioclase-bearing spinel lherzolites. The complex is in fault contact with the surrounding Tertiary strata. High-temperature peridotite mineral assemblages are overprinted by lower temperature hydrous assemblages characterized by abundant hornblende which is found filling interstices or thin veinlets. The small amounts of K, Na, Cl and F in the hornblende suggest that the metasomatic fluid may have been depleted in these elements. Carbon dioxide-rich, incompatible element-enriched, fluids are not thought to be the cause of the metasomatism since metasomatic phlogopite and carbonates, commonly reported from garnet peridotites and metasomatized alpine-type ultramafic rocks, are absent. The Mt Kinabalu garnet peridotites represent part of the sub-crustal mantle beneath Kalimantan which was metasomatized during ascent due to tectonism. The metasomatic fluid, poor in incompatible elements and H2O-rich, may have been introduced into a sub-continental mantle wedge after dehydration of a subducted oceanic slab.

ジャーナルJournal of Southeast Asian Earth Sciences
出版ステータス出版済み - 1月 1 1991

!!!All Science Journal Classification (ASJC) codes

  • 環境科学(全般)
  • 地球惑星科学(その他)
  • 地球惑星科学(全般)


「Tectonic implications of the hydrated garnet peridotites near Mt Kinabalu, Sabah, East Malaysia」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。