Abstract
The Older Metamorphic Group and the Older Metamorphic Tonalite Gneiss are classic examples of Palaeaoarchaean highgrademetamorphic rocks of the Singhbhum Craton of India. The Older Metamorphic Group is a supracrustal assemblage that was probably deposited as a greenstone belt-type succession before c. 3.32 Ga, the low-grade equivalents of which are found in parts of the Iron Ore Group. The Older Metamorphic Tonalite Gneiss represents a suite of granitoids that are tectonically interleaved with the supracrustal gneisses and that formed over an extended period of time, 3.53-3.45 Ga and possibly later, by processes of Archaean crustal growth.
Original language | English |
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Pages (from-to) | 103-107 |
Number of pages | 5 |
Journal | Geological Society Memoir |
Volume | 43 |
DOIs | |
Publication status | Published - 2015 |
ASJC Scopus subject areas
- Geology