Metamorphic and igneous rocks
Multifractal model of magnetic susceptibility distributions in some igneous rocks
... ment rocks beneath the Colorado Plateau and ranges in Ari- zona, Colorado, and New ...between metamorphic gneiss sites and sites on plutons, even if the plutons have been meta- ...particular, rocks ...
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Remagnetization of igneous rocks in Gupis area of Kohistan arc, northern Pakistan
... ondary remanent magnetization by the primary magnetite is ruled out, because no high temperature metamorphic min- eral assemblages (of the range of magnetite Curie tempera- ture) have been observed. The other type ...
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Study of Groundwater Prospect Zones in Metamorphic Rocks in Purulia District, West Bengal- An Approa
... calc-silicate rocks. Metasomatic effect of the Granites on these calc-silicate rocks caused some skarn rocks which are principally composed of quartz, diopside, microcline and calcite with ...
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High Heat Producing Volcano Plutonic Rocks of the Siner Area, Malani Igneous Suite, Western Rajasthan, India
... The Heat Generation Unit (HGU) value and Heat Pro- duction (HP) value were computed from the measured abundance of U, Th and K using the relation given by Birch, 1 : A (µ·Wm –3 ) = 0.01 × ρ (9.69 Cu + 3.58 Ck + 2.65 ...
5
Pseudotachylytes, related fault rocks, asperities, and crustal structures in the Hidaka metamorphic belt, Hokkaido, northern Japan
... (2) An abundance of the layer-parallel pseudotachylytes and their host thin mylonite zones suggests that earthquakes have occurred frequently and repeatedly in the southern part of the metamorphic belt. The ...
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Polyphase folding in Precambrian low grade metamorphic rocks, Middle Gordon river, S E Tasmania
... folds which are well developed in phyllitic layers have not deformed the thicker quartzite bands in which there is occurs only the hinge the six-inch Both photographs are located road cu[r] ...
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Arrested development – a comparative analysis of multilayer corona textures in high-grade metamorphic rocks
... hydrous bulk composition, and in dry, residual pelitic com- positions that have lost melt in an earlier metamorphic event. Experimental work characterizing rate-limiting reaction mechanisms and their petrogenetic ...
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Petrochemistry and Study of the Thermal Metamorphic Processes in the Calcareous Rocks Around Kodag, District 'Palamau, Bihar
... In conclusion it may be noted here that the results obtained in thermal and regional metamorphic conditions in the case of calcareous rocks cannot be ascertain- ed on the basis of minera[r] ...
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Magnetic fabric and rock magnetic studies of metasedimentary rocks in the central Okcheon Metamorphic Belt, Korea
... Anisotropy of low field magnetic susceptibility (AMS) studies have been widely used to delineate the petrofab- rics of metamorphic rocks in terms of finite strain during tectono-metamorphism (e.g., Graham, ...
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A FORTRAN Software Application to Decode Geographical, Lithological, Political, and Bibliographical Information from the IGBADAT International Database on Igneous Rocks
... GEOLITH is a FORTRAN program designed primarily to extract and decode geographical, lithological, political, and bibliographical information from the international igneous rocks database IGBADAT. It fetches ...
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A palaeomagnetic study of igneous rocks from eastern Australia, with special reference to rock bodies of Mesozoic age
... plutonic rocks range from adamellite, through monzonite and shonkinite to pyroxenite and associated with them are dykes of aplite, lamprophyre and dolerite* Figure 4*1 shows the topography formed by the intrusion, ...
181
Chemical composition of biotite from the Lar Cu-Mo prospect igneous rocks, Southeastern part of Iran
... The biotite compositions can be used to discriminate qualitative evaluation of oxygen fugacity. According to Wones and Eugster (1965) diagram, the comparison of biotite compositions with common oxygen buffers ...
12
Geochemistry and age of magmatic rocks in the unexposed Narromine, Cowal and Fairholme Igneous Complexes in the Ordovician Macquarie Arc, New South Wales
... holocrystalline rocks in these areas accompanied significant uplift, with widespread limestone ...Suite rocks in the Narromine Igneous Complex show a striking textural difference between the ...
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Metamorphic Cryptography
... ABSTRACT In today's digital world the ways communication are getting better day by day which in turn giving rise to one major problem which is the security of the data transmission, for [r] ...
5
Structure and metamorphic petrology of the Forth metamorphic complex
... The gneiss at DQ359370 has a distinct colour banding due to 1-3mm wide strings of pink fine-granular garnet and bands of well foliated pale-green clinopyroxene + zoisite + quartz 75615 a[r] ...
140
Geochronology and thermochronology of Cretaceous plutons and metamorphic country rocks, Anyui-Chukotka fold belt, North East Arctic Russia
... Country rocks are domed around the in- trusive contacts of circular plutons and often have a strong (and steep) foliation developed immediately adjacent to the contact ...country rocks as opposed to ...
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Magmatic characteristics and geochronology of Ordovician igneous rocks from the Cadia Neville region, New South Wales: implications for tectonic evolution
... oldest igneous rocks in the Cadia – Neville region and were interpreted by Wyborn and Henderson (1996) to represent the initial outpouring of basaltic lava during the development of the Forest Reefs ...
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Petrological Characteristic and Whole Rock Geochemistry of Metamorphic Rocks in Melangè Complex of Ciletuh Area, West Java, Indonesia
... of metamorphic rocks is metapelite (clay-rich), metapsammite, metacalcarenit, metabasic and ...affects rocks originating from continental plates (metapelitic, metapsammitic, metacalc arenite) and ...
9
Multifractal magnetic susceptibility distribution models of hydrothermally altered rocks in the Needle Creek Igneous Center of the Absaroka Mountains, Wyoming
... Observed magnetic susceptibility variations and the mono- lithological character of the host rock suggest that the vari- ations are due to varying degrees of alteration of blocks of rock between fractures that conducted ...
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