Records of the Geological Survey of India, Volume 130, Part 4The Survey, 1995 - 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 4
... quartz and pegmatite veins traces the isoclinal ( F1 ) folds . The quartz and pegmatite veins and bands of metabasites within the gneiss often show pinch and swell or boudinage structure parallel to axial planes of F1 . The axial plane ...
... quartz and pegmatite veins traces the isoclinal ( F1 ) folds . The quartz and pegmatite veins and bands of metabasites within the gneiss often show pinch and swell or boudinage structure parallel to axial planes of F1 . The axial plane ...
Page 16
... quartz veins . Both grey and pink granites are present in the area with the gneissic derivatives . The alkaline ul tramafic complex of Barpung consists of pyroxenite , ijolite . meliolite , basalt , syenite , fenite , fenitised tuff etc ...
... quartz veins . Both grey and pink granites are present in the area with the gneissic derivatives . The alkaline ul tramafic complex of Barpung consists of pyroxenite , ijolite . meliolite , basalt , syenite , fenite , fenitised tuff etc ...
Page 46
... quartz -syenite and amphibolite with veins of pegmatite , quartz and lamprophyre . Five molybdenite bearing discordant quartz veins with sporadic specks of pyrite identified by geochemical studies , were taken up for detailed ...
... quartz -syenite and amphibolite with veins of pegmatite , quartz and lamprophyre . Five molybdenite bearing discordant quartz veins with sporadic specks of pyrite identified by geochemical studies , were taken up for detailed ...
Contents
Foreword | 1 |
PROJECT2 LIMESTONE MEGHALAYA | 7 |
Regional geoenvironmental appraisal of Meghalaya | 9 |
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abutment amphibolite Archaean ARUNACHAL PRADESH Assam axial plane axis bands basemetal bed rock Bhuban Formation biotite block bore holes boreholes carried channel Chu valley clay comprises conglomerate construction Crystalline Complex depth dimension stones dips dolerite drilled dyke EAST KHASI HILLS evaluation excavation exposed folds foliation Gandhigram Formation GDP-LOG geoenvironmental GEOTECHNICAL INVESTIGATION gneisses granite gneiss granitoids grey Karbi Anglong district KHASI HILLS DISTRICT Kopili lamprophyre leakage limestone lithounits located Mahadek Formation Mawsynram medium grained Meghalaya metasedimentary metasediments micaceous Middle Bhuban migmatites mineralisation mylonitic Nagaon overburden phyllite power house proposed Proterozoic quartzite Quaternary reservoir river samples sandstone scale schist sediments Sela Group sequence shale Shillong Shillong Group Siang district siltstone slope soil spillway sq km sq km area sq.km structure studies Subansiri suitable Surma Group surveys Systematic geological mapping Tertiary thick Thrust Tilung Tipam Toposheet trending Tuting Crystallines Unconformity Upper Bhuban upstream WEST के