Records of the Geological Survey of India, Volume 124, Parts 7-8Government of India, 1991 - 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 32
... foliation is marked by these mafics and shows gradational contact with mig- matites and porphyroblastic geisses . Grey gneisses , consisting of medium to coarse grained quartz , white feldspar , biotite and hornblende , is generally ...
... foliation is marked by these mafics and shows gradational contact with mig- matites and porphyroblastic geisses . Grey gneisses , consisting of medium to coarse grained quartz , white feldspar , biotite and hornblende , is generally ...
Page 131
... foliation strike is N60 ° E- S60 ° W , dip 20- 25 ° : N30W which is 65 ° askew to the adit alignment . The foliation joints are well marked and have largely control- led the shape of the crown . Thin shear zones , two to five ...
... foliation strike is N60 ° E- S60 ° W , dip 20- 25 ° : N30W which is 65 ° askew to the adit alignment . The foliation joints are well marked and have largely control- led the shape of the crown . Thin shear zones , two to five ...
Page 132
... foliation joints dipping at 60 ° due N25 ° E are very prominent and occur at spacing of 15 to 20cm . The tunnel alignment is 8 ° to 15 ° askew to the foliation trend . The shears parallel to the foliation are most com- mon . In addition ...
... foliation joints dipping at 60 ° due N25 ° E are very prominent and occur at spacing of 15 to 20cm . The tunnel alignment is 8 ° to 15 ° askew to the foliation trend . The shears parallel to the foliation are most com- mon . In addition ...
Contents
GEOLOGICAL MAPPING Page 1 Highgrade and mediumgrade sequences of the Mangalwar and Sandmata Complexes | 1 |
Studies on the Mangalwar and the Hindoli rock sequences | 3 |
Mangalwar Project | 4 |
Copyright | |
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Common terms and phrases
aeolian alluvial plain Alluvium amphibolite anomaly axis bands basalt basin belt biotite block boreholes calcareous channel Chittaurgarh district clay comprises Delhi deposits depth dips district Doda district dolomite dunes dykes excavation exposed fault field season flood plain fluvial folds foliation Formation foundation Ganga geochemical geological mapping Geology Division geomorphological geophysical geotechnical gneiss gold grade grained granite grey Group Gujarat Himachal Pradesh Himalaya indicate intersected Jammu joints km² Krol limestone Lithology Lithostratigraphy located Mangalwar metamorphism metres mica schist mineral mineralised zone palaeochannels pegmatite phyllite Project pyrite quartz quartz veins quartzite Quaternary Rajasthan regional river rocks samples sand sandstone scale schist sediments sequence shale shear zone silt siltstone Siwalik slate slope soil Sonbhadra district spillway structures studies sulphide Supergroup surface surveys SYNCLINE tectonic Terrace thermal thick tion toposheet trending tunnel Udaipur district upper Uttar Pradesh valley Varanasi Varanasi Older Alluvium Vindhyan volcanics