Records of the Geological Survey of India, Volume 123, Part 7The Survey, 1990 - 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 22
... phenocrysts of pyroxene . ( Flow - XI ) Porphyritic basalt with phenocrysts of feldspar only . ( Flow - X ) Mainly amygdular basalt . ( Flow - IX ) IT5 Intertrappean siltstone and chert etc. Porphyritic basalt . ( Flow - VIII ) IT4 ...
... phenocrysts of pyroxene . ( Flow - XI ) Porphyritic basalt with phenocrysts of feldspar only . ( Flow - X ) Mainly amygdular basalt . ( Flow - IX ) IT5 Intertrappean siltstone and chert etc. Porphyritic basalt . ( Flow - VIII ) IT4 ...
Page 24
... phenocrysts , textural relationship and nature of amygdules three major flows have been delineated . The lowermost flow ( Flow - I ) is highly amygdular and weathered with massive basalt at the base . Amygdules are composed of zeolite ...
... phenocrysts , textural relationship and nature of amygdules three major flows have been delineated . The lowermost flow ( Flow - I ) is highly amygdular and weathered with massive basalt at the base . Amygdules are composed of zeolite ...
Page 29
... phenocrysts are mainly of plagio- clase varying in size from a few mm to about 6 mm in length . The individual flow units exhibit features like glassy crust with ropy structure , vesicle cylin- ders , toes and crack filling / squeeze ...
... phenocrysts are mainly of plagio- clase varying in size from a few mm to about 6 mm in length . The individual flow units exhibit features like glassy crust with ropy structure , vesicle cylin- ders , toes and crack filling / squeeze ...
Contents
rock sequence | 1 |
Mangalwar Projec | 3 |
Geological mapping of the Aravalli Supergroup and the associated granitic rocks in Panchmahals district Gujarat | 7 |
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aeolian Agucha Alluvium amphibolite amygdules anomalies Aravalli augite axial bands BASALT BASALT FLOW basin bedding belt Bethunmi biotite boreholes calcareous carbonate characterised chert clinopyroxene comprises conglomerate contains Deccan Traps deposits depth dolerite dolerite dykes dolomite drilling dunes eastern exploration exposed felsic Flow-II fluvial folds Formation geochemical Geological map geophysical surveys gneiss gossan granite grey Gujarat Hindoli INDEX indicated intersected intertrappean intruded Jahazpur Kalabar kmĀ² was mapped Magnetic Mangalwar Complex marble massive sulphide metamorphism metasediments mica schist migmatitic Miliolitic Limestone NE-SW NNE-SSW North Sindesar Ridge occur older olivine opaques overlying Pb-Zn pegmatite phase phenocrysts phyllite plagioclase porphyritic quartz quartz veins quartzite Rajasthan Rann Clay regional rock types samples sandstone Sawar scale schist sequence shale shear zone silt Sindesar Ridge block Sirohi district Sirohi Group skarns stratigraphic strike length structures Surendranagar texture thickness tion toposheet trending tuffaceous Udaipur UDAIPUR DISTRICT unconformably unit volcaniclastic volcanics Wadhwan western