Records of the Geological Survey of India, Volume 129, Parts 4-5The Survey, 1994 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 77
... grained sandstone / siltstone , fine to medium grained hard compact , calc areous siltstone and yellowish col- oured fine grained siltstone . This formation is fossiliferous and has yielded the following biota : Pelecypods : Ostrea sp ...
... grained sandstone / siltstone , fine to medium grained hard compact , calc areous siltstone and yellowish col- oured fine grained siltstone . This formation is fossiliferous and has yielded the following biota : Pelecypods : Ostrea sp ...
Page 86
... grained , composed of hornblende , biotite , feldspar , quartz and pyrite . Two types of amphibolites are found ; one is massive with salt and pepper texture and the other is fine - grained , highly schistose . It occurs as bands within ...
... grained , composed of hornblende , biotite , feldspar , quartz and pyrite . Two types of amphibolites are found ; one is massive with salt and pepper texture and the other is fine - grained , highly schistose . It occurs as bands within ...
Page
... grained showing effects of intense shearing and mylonitisation . Detailed petrographic studies of these dykes in- dicate that almost all the WNW - ESE dykes are me- dium to coarse - grained showing typical ophitic to sub - ophitic ...
... grained showing effects of intense shearing and mylonitisation . Detailed petrographic studies of these dykes in- dicate that almost all the WNW - ESE dykes are me- dium to coarse - grained showing typical ophitic to sub - ophitic ...
Contents
Resource Survey for dimensional stones of Mylliem Granite East Khasi Hills District Meghalaya | 4 |
ASSAM PROJECT 6 GEOLOGICAL MAPPING | 12 |
An Overview | 1 |
Copyright | |
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amphibolite ANANTAPUR DISTRICT ANDHRA PRADESH anomaly Arunachal Pradesh Assam assessment auriferous banded iron formation beach bedrock BIF bands biotite block boreholes carried charnockite chert clay comprising delineated deposits depth dips dolerite drilling dykes east eastern emplaced ENE-WSW excavated exposed field season folds foliation Formation gabbro geochemical GEOLOGICAL MAP geophysical geotechnical investigations gneiss grade grained granite granite gneiss granulite gravity grey Group hill hornblende indicated intrusives joints KARNATAKA KERALA kimberlite laterite limestone lineament located mafic magnetic Meghalaya metabasalt migmatites mineral mineralised zones NE-SW NW-SE occur overburden pegmatite phyllite pink power house PROJECT pyrite quartz quartz veins quartzite regional ridge river rock types samples sand sandstone scale schist belt schistose sediments shale shear zone Shillong slope soil Specialised Thematic Mapping sq km strike length structural studies sulphides surface surveys TAMIL NADU thick traverses trenching trending tunnel ultramafic upto valley volcanics weathered width