Records of the Geological Survey of India, Volume 117, Part 2The Survey, 1986 - 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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Geological Survey of India. ABSTRACT INTRODUCTION Area studied Previous work Scope of the present study Limitations of the present work PHYSIOGRAPHY OF THE AREA THE GNEISSIC COMPLEX Structural elements Generalised descriptions ...
Geological Survey of India. ABSTRACT INTRODUCTION Area studied Previous work Scope of the present study Limitations of the present work PHYSIOGRAPHY OF THE AREA THE GNEISSIC COMPLEX Structural elements Generalised descriptions ...
Page 1
... present steplike form has largely been due to post Mesozoic uplift adjusted along earlier fracture systems which riddle the entire region . The present paper deals exclusively with the older rocks , mapped over 2000 sq km on 1 : 63,360 ...
... present steplike form has largely been due to post Mesozoic uplift adjusted along earlier fracture systems which riddle the entire region . The present paper deals exclusively with the older rocks , mapped over 2000 sq km on 1 : 63,360 ...
Page 5
... Present Study From the resume given above several questions seem to be raised naturally : - The first issue is the relationship between the Shillong " Series " and the Gneissic Complex . This very critical question has caused confusion ...
... Present Study From the resume given above several questions seem to be raised naturally : - The first issue is the relationship between the Shillong " Series " and the Gneissic Complex . This very critical question has caused confusion ...
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albite amphibolite amphibolite facies aureole Babina banded iron-formation Basu Batholith Berwar Bijawar biotite bodies Bundelkhand Bundelkhand granitic massif Bundelkhand massif chlorite composition conglomerate country rocks crystals developed dips dolerite dykes emplacement enclaves esmeraldite exhibit feature feldspar folds foliation formation garnet Geol GEOLOGICAL SURVEY gneisses Gneissic Complex grade grained granite granite granitic rocks granitoid groundmass H₂O hornblende inclusions INDIA Records indicate intrusive Jhansi granite Jhararghat K-feldspar Kabrai Karesra Karitoran lamellae leucogranite magmatic magnetite Mahroni mapped Mau Ranipur megacrysts metabasic metamorphism microcline migmatites minerals muscovite Mylliem Mylliem Pluton myrmekite occur outcrops parallel pegmatite perthite phenocrysts plagioclase pluton porphyritic porphyritic coarse grained porphyritic granites Precambrian pyrophyllite quartz quartz reefs quartz-sericite rock quartzites recrystallization relict samples schist schistose sedimentary sediments sericite shear Shillong Group Shillong rocks Shillong Series South Khasi Batholith sphene strike structural suggest SURVEY OF INDIA syenitic textural trending twins upto veins xenoliths zone