The Gneisses of the Bartica Assemblage, British Guiana
- 1 April 1962
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 99 (2), 164-172
- https://doi.org/10.1017/s0016756800057307
Abstract
The results of an examination of one quarry within the gneisses of the Bartica Assemblage are described and the validity of these results throughout the whole of the Bartica Assemblage is discussed. The foliation and banding of the gneisses at Kereti Quarry are mainly the results of tectonism; concomitant metamorphism within the Amphibolite Facies was succeeded by a two-phase metasomatism involving successive additions of Na and K. These results appear valid throughout the Bartica Assemblage and it is further suggested that the main rock type distribution in the Bartica Assemblage is also controlled by tectonism.Keywords
This publication has 4 references indexed in Scilit:
- Flow Folding in RocksNature, 1961
- Note 23--Need for Rock-Stratigraphic Units Larger Than Group: STRATIGRAPHIC COMMISSIONAAPG Bulletin, 1959
- On the emplacement of granitesAmerican Journal of Science, 1956
- The rheid concept in geotectonicsJournal of the Geological Society of Australia, 1953