Records of the Geological Survey of India, Volume 96Geological Survey of India, 1971 - Earthquakes 1867- includes the "Annual report of the Geological survey of India". |
From inside the book
Results 1-3 of 43
Page 185
... types ( basic - acid ) , and the term ' multiple intrusions ' to intrusive complexes with similar basic rock types , whether the contacts are chilled or not , is advocated . Where genetic relationships among the constituent units can be ...
... types ( basic - acid ) , and the term ' multiple intrusions ' to intrusive complexes with similar basic rock types , whether the contacts are chilled or not , is advocated . Where genetic relationships among the constituent units can be ...
Page 186
... type BAB ( B = basic , A = acid rock ) is common ; quintuple types ( BABAB ) , are also described ( Tyrrell , 1940 , p . 32 ) . ( d ) Quartz xenocrysts ( surrounded by narrow reaction rims of pyroxene ) and corroded orthoclase occur in ...
... type BAB ( B = basic , A = acid rock ) is common ; quintuple types ( BABAB ) , are also described ( Tyrrell , 1940 , p . 32 ) . ( d ) Quartz xenocrysts ( surrounded by narrow reaction rims of pyroxene ) and corroded orthoclase occur in ...
Page 190
... types could better be described as multiple intrusions with chilled or unchilled contact . As in composite intrusions , multiple intrusions may be formed by the injection of basic magma of a later epoch into dykes of an earlier epoch ...
... types could better be described as multiple intrusions with chilled or unchilled contact . As in composite intrusions , multiple intrusions may be formed by the injection of basic magma of a later epoch into dykes of an earlier epoch ...
Contents
Son Valley in Mirzapur district U P by F Ahmad | 1 |
Some Geological factors influencing the behaviour of | 42 |
The Snout of the Machoi Glacier Kashmir by | 51 |
Copyright | |
14 other sections not shown
Other editions - View all
Common terms and phrases
acid actinolite analyses Auden basalt bauxite beds Bilaspur boulders breccia brown cent by weight chemical chert chrome-rich suite chromite chromite deposits clay colour composition concentration conglomerate crystallisation crystals district dolerite dumortierite east epidote exposed faults felspar fine-grained flows folded formation formed fossils fraction friable garnet Geol Geological Survey Ghumarwin glacier grains granite grey Haritalyangar hill horizon igneous ilmenite indicated Konal Kosi laterite layers limestone Lower magma magnetite mapping material metres Middle Siwalik minerals multiple dykes multiple intrusions Mussoorie occur orthopyroxenite overlying Oxide P₂O pebbles pelitic phosphate phosphorus phyllites plagioclase porcellanites Pradesh present pumicite quartz quartzites river rock phosphate samples sandstones scarp sediments seen shales silica silicified Siwalik Siwalik rocks snout soil structure Sukinda Surv Survey of India syncline TABLE Tadpatri thick thin tourmaline types ultrabasic ultrabasic rocks unconformity Upper valley veins Vempalle Vindhyan system volcanic wall rocks zone