R7: Petrology, Mineralogy and Economic geology (Joint Session with Society of Resource Geology)

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

*Tomoaki Morishita^1,2, Ikuya Nishio^1,5, Juan Miguel Guotana^1,4, Akihiro Tamura¹, Kenichiro Tani³, Hikaru Sawada², Yumiko Harigane⁶, Pedro Waterton⁵, Szilas Kristoffer⁵ (1. Kanazawa Univ., 2. JAMSTEC, 3. NMNS, 4. Univ. Philippines, 5. Univ. Copenhagen, 6. GSJ, AIST)

Keywords:Ultramafic rock, Archean Geology, Metasomatism, Metamorphism

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.