Records of the Geological Survey of India, Volume 139, Part 5The Survey, 2006 - 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 267
... noticed . Matrix ( .02 to .05 mm ) is made of fine grained sericite and iron oxide material . Tiny authigenic tourmaline needles are noticed within matrix material in this unit . The EPMA studies indicate it to be Schorl . It is ...
... noticed . Matrix ( .02 to .05 mm ) is made of fine grained sericite and iron oxide material . Tiny authigenic tourmaline needles are noticed within matrix material in this unit . The EPMA studies indicate it to be Schorl . It is ...
Page 268
... noticed at places near Velpula area . Pulivendla Formation Conglomerate : The basal conglomerate of Pulivendla Formation is a polymictic and clast supported conglomerate of 12 to 15 m thickness . Most of the clasts are made of chert ...
... noticed at places near Velpula area . Pulivendla Formation Conglomerate : The basal conglomerate of Pulivendla Formation is a polymictic and clast supported conglomerate of 12 to 15 m thickness . Most of the clasts are made of chert ...
Page 271
... noticed in subordinate amounts . Lithic fragments of tuff , shale and quartzite are also noticed in this unit . Ferruginous cement is noticed in both the above mentioned units . Longitudinal ripples are very commonly noticed in the ...
... noticed in subordinate amounts . Lithic fragments of tuff , shale and quartzite are also noticed in this unit . Ferruginous cement is noticed in both the above mentioned units . Longitudinal ripples are very commonly noticed in the ...
Contents
ANDHRA PRADESH | 1 |
Quaternary Geology | 9 |
Project National Geochemica Mapping NGCM | 16 |
Copyright | |
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abutment alignment amphibolite Andhra Pradesh assess bands basin bed rock biotite biotite gneiss block boreholes carried charnockite coast cut-off trench depth district dolerite drilled dunes dyke earth dam enclaves excavation exposed field season folds foliation Formation foundation fresh rock garnet Geochemical Mapping geological mapping GEOTECHNICAL INVESTIGATION gneiss gold grained granite granite gneiss granitoids granodiorite granulite gravity grouting holes hornblende indicated intrusive Item joints Karnataka Kerala Khondalite kimberlite laterite limestone lithounits located lugeons mafic metabasalt migmatite mineralisation minerals moderate mylonite NNW-SSE NW-SE occur overburden pegmatite penstock permeability tests phyllite powerhouse project authorities proposed pyroxene quartz quartz veins quartzite reservoir river samples were collected sand schist belt shale shear zone shotcrete slope soil Specialised Thematic Mapping spillway STAGE GEOTECHNICAL stream sediment samples strike structure studies sulphide surface Tamil Nadu thick toposheet traverse trending tsunami ultramafic upto values varying vertical weathered weir width