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
... planes of F1 . The axial plane of F1 folds and the composi- tional banding are involved in F2 open folds with vertical axial plane striking NE - SW having plunge towards SW . The F3 folds are chevron type open warps with subvertical axial ...
... planes of F1 . The axial plane of F1 folds and the composi- tional banding are involved in F2 open folds with vertical axial plane striking NE - SW having plunge towards SW . The F3 folds are chevron type open warps with subvertical axial ...
Page 6
... planes striking NNE - SSW . Wherever , the F2 folds are tight , shear planes have de veloped parallel to axial plane of F2 and trend NNE , spe cially in the Umiam River section , although the mai shear zone ( Tyrsad - Barapani ) trends ...
... planes striking NNE - SSW . Wherever , the F2 folds are tight , shear planes have de veloped parallel to axial plane of F2 and trend NNE , spe cially in the Umiam River section , although the mai shear zone ( Tyrsad - Barapani ) trends ...
Page 24
... planes into broad open warps . The rocks of the Yang Sang Chu Formation show progressive regional metamorphism up to sillimanite grade . The mineral assemblages and their varieties reveal at least two metamorphic events . GEOLOGY OF THE ...
... planes into broad open warps . The rocks of the Yang Sang Chu Formation show progressive regional metamorphism up to sillimanite grade . The mineral assemblages and their varieties reveal at least two metamorphic events . GEOLOGY OF THE ...
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