An integrated study of Paleo- and Neoproterozoic orogenic processes at the Tanzanian craton margin

2014 Fiscal Year Final Research Report

• Project/Area Number: 24403010
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Geology
• Research Institution: Okayama University
• Principal Investigator: TSUJIMORI Tatsuki 岡山大学, 地球物質科学研究センター, 准教授 (00436833)
• Co-Investigator(Kenkyū-buntansha): OTA Tsutomu 岡山大学, 地球物質科学研究センター, 助教 (80379817) ; KOBAYASHI Katsura 岡山大学, 地球物質科学研究センター, 准教授 (20325129)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 大陸地塊 / タンザニア地塊 / 原生代造山帯 / 古原生代エクロジャイト / 野外地質学 / 変成岩岩石学 / タンザニア / 東アフリカ

Outline of Final Research Achievements

High-pressure metamorphic rocks occurring sporadically around the Archean Tanzanian craton record a crustal evolution related to Paleo- and Neoproterozoic orogeny. Our integrated studies confirmed that the Paleoproterozoic subduction-related units including eclogite-bearing high-pressure intermediate-type metamorphic belt and coeval paired granitic batholiths are overprinted significantly by a Pan-African granulite-facies regional metamorphism and deformation. The Pan-African events intrusions played the most important role in the crustal evolution.

Free Research Field

変成岩岩石学