Records of the Geological Survey of India, Volume 140, Part 5The Survey, 2007 - 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 5
... granitoids indicate coexistence of mafic and felsic magmas and mingling and mixing of contrasting magmas during the crystallisation of TGM rocks . It may represent hybrid magma intruded in to the crystallising host granitoid in the form ...
... granitoids indicate coexistence of mafic and felsic magmas and mingling and mixing of contrasting magmas during the crystallisation of TGM rocks . It may represent hybrid magma intruded in to the crystallising host granitoid in the form ...
Page 45
... granitoid . The granitoids are post tectonic intrusives and usually contain enclaves of other older granitoids . Three variations are seen in this suite viz . i hornblende - biotite Granite ii porphyritic - biotite granite and iii ...
... granitoid . The granitoids are post tectonic intrusives and usually contain enclaves of other older granitoids . Three variations are seen in this suite viz . i hornblende - biotite Granite ii porphyritic - biotite granite and iii ...
Page 113
... granitoids viz . , leucogranite , pegmatoidal granite and pink granite . The granitoids of Punjaipuliyampatti area has been emplaced within hornblende biotite gneiss in two pulses . The leucogranite representing the older pulse is ...
... granitoids viz . , leucogranite , pegmatoidal granite and pink granite . The granitoids of Punjaipuliyampatti area has been emplaced within hornblende biotite gneiss in two pulses . The leucogranite representing the older pulse is ...
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Common terms and phrases
abutment Additional Item amphibolite ANDHRA PRADESH bed rock biotite block boreholes boreholes drilled carried charnockite clay CONSTRUCTION STAGE GEOTECHNICAL cover Cuddapah cut off trench cut-off depth DISTRICT dolerite dolerite dyke downstream earth dam excavated exposed field season flank foliation Formation foundation fresh rock garnet garnetiferous geological mapping GEOTECHNICAL INVESTIGATION gneiss gold granite granitoids granulite gravity grey ground level hornblende indicated intrusive joints KARNATAKA KERALA Khondalite kimberlite Kumar laterite limestone lineament located magnetite migmatite mineralisation minerals moderate monzogranite NE-SW NW-SE overburden pegmatite Peninsular Gneissic Complex penstock permeability tests powerhouse project authorities proposed Puducherry pyroxene pyroxene granulite quartz quartz veins quartzite river rock types samples schist Schist belt seismic shale shear zone slope soil Specialised Thematic Mapping spillway sq km STAGE GEOTECHNICAL INVESTIGATION strike length structure studies suggested Tamil Nadu terrain thickness toposheet traversed tunnel upto values varies vertical weir width