R7：岩石・鉱物・鉱床 (資源地質学会 との共催 セッション)

[R7P-12] Petrology of ultramafic rocks in the Archean geological belt, southern West Greenland

*森下 知晃^1,2、西尾 郁也^1,5、Guotana Juan Miguel^1,4、田村 明弘¹、谷 健一郎³、澤田 輝²、針金 由美子⁶、Waterton Pedro⁵、Kristoffer Szilas⁵ (1. 金沢大学、2. 海洋研究開発機構、3. 国立科学博物館、4. フィリピン大学、5. コペンハーゲン大学、6. 産業技術総合研究所地質調査総合センター)

キーワード：超苦鉄質岩、太古代の地質、交代作用、変成作用

Ultramafic rocks are a minor of the Archean geologic belt, but small rock bodies are scattered over a wide area. The Archean ultramafic rocks are however fascinating rocks in the field of earth sciences because they are expected to record mantle information from the Archean age. The fundamental question is whether the Archean ultramafic rocks retain original information about the mantle during the Archean age. We present petrological and mineral characteristics of several ultramafic bodies in the Archean geological belt of southern West Greenland.