murphism in the latter and caused the gneisses to be remelted and reborn over a large area and to intrude the gabbro-dolerites in the form of veins or otherwise. [...] The Grey Gneiss occurs extensively both in the Pathroo alley in the south and in the Darua valley in the north. [...] of a basic rock which is similar to the basic rock occurring in the form of bands in other parts of the hill. [...] The dark rock surrounding the shreds is evidently.a hybrid rock formed by the admixture of the -rocks of the basic shreds and the leucocratic intrusive granitic gneiss. [...] Junction of the Amphibolite Series with Gneisses and Pegmatite Veins The disappearance of hornblende and pyroxene and the appearance of biotite are the most important phenomena near these junctions observed in both the field and under the microscope.
- Pages
- 70
- Published in
- India
- SARF Document ID
- sarf.120341
