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Геология России: Recent submissions
Now showing items 1921-1940 of 43490
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(2006)Tiny basaltic samples containing finely grained titanomagnetite with Curie temperature less than 100°C were heated in air in weak field (25-100μT) at temperatures between 400°C and 560°C for times as long as 32 hr. ...
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(2006)The Saldanha hydrothermal field is located at the top of a serpentinized massif (Mount Saldanha, MS) at a non-transform offset (NTO5) along the Mid-Atlantic Ridge (MAR), south of the Azores. It is one of the rare known ...
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(2006)We report here a multiphase mineral inclusion composed of quartz, plagioclase, K-feldspar, sapphirine, spinel, orthopyroxene, and biotite, in porphyroblastic garnet within a pelitic granulite from Rajapalaiyam in the Madurai ...
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(2006)We report here a garnet-spinel orthopyroxenite in close association with an ultrahigh-temperature (UHT) granulite from the central part of the Madurai Granulite Block in southern India. The garnet-spinel orthopyroxenite ...
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(2006)Highly aluminous orthopyroxene, coexisting with sapphirine, cordierite, sillimanite, quartz and garnet in various combinations, constitute granoblastic mosaic peak metamorphic assemblages in aluminous granulites from three ...
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(2006)Eclogites within the Tromsø Nappe of the Uppermost Allochthon in the Scandinavian Caledonides record a complex P-T history, involving a prograde subduction-related stage. Information on the early prograde stage of the ...
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(2006)Sapphirine+quartz-bearing pelitic granulites, garnet-clinopyroxene-quartz-bearing mafic granulites and quartzo-feldspathic granulites with corundum-garnet-quartz constitute rare but important members of the Highland Complex ...
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(2006)Eclogite and garnet glaucophanite lenses from the Punta Balandra unit of the Samaná basement complex (northern Hispaniola) preserve information of the early metamorphic and tectonic history of subduction in the Caribbean ...
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(2006)The Southern Indian shield is a classic terrain that may be regarded as a model for Precambrian crustal evolution. The Palni Hills represent a portion of the granulite-facies terrain of the Madurai block. Determination of ...
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(2006)Seismic velocities and attenuations are influenced by lithology, porosity and permeability as well as the kind and quantity of the pore fluids. The microstructure of rocks is another important factor influencing seismic ...
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(2006)A complex palaeomagnetic, rock-magnetic and mineralogical study of ultrabasic rocks from the Sowie Góry Block (GSB) and Jordanów-Gogołów Serpentinite Massif (JGSM) revealed the presence of several components of natural ...
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(2006)The Bhopalpatnam granulite belt (BGB) flanks the Pranhita-Godavari (PG) rift basin with ages ranging from 1.6 to 1.9 Ga, representing a major Mesoproterozoic thermal regime in central India. We present here new results on ...
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(2006)The island of Pantelleria consists of trachytes, pantellerites and minor mildly alkaline basalts. Rocks of intermediate composition (falling in the so-called 'Daly Gap') such as mugearites, benmoreites and mafic trachytes ...
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(2006)The orbicular rock at Slättemossa, southeastern Sweden, has a quartz monzodioritic composition. The cores of the orbicules crystallized directly from the orbicule-forming magma; cores made up of xenoliths have not been ...
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(2006)A diverse range of crustal xenoliths is hosted in young alkali basalt lavas and scoria deposits (erupted ~3-5 ka) at the summit of Hualālai. Leucocratic xenoliths, including monzodiorites, diorites and syenogabbros, are ...
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(2006)Scattered occurrences of ophiolitic rocks are widespread in the Cyclades islands of Greece and are important for understanding the later Mesozoic ocean spreading and collisional history of the region, which has been obscured ...
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(2006)Adakitic rocks in the Xuzhou-Suzhou area, eastern China, consist of dioritic and monzodioritic porphyries and were dated at 131-132 Ma by the SHRIMP U-Pb zircon method. These rocks have high MgO content (1.47-5.73%), high ...
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(2006)The intrusive association of Ota (post-Variscan Corsica-Sardinia batholith) consists of mafic rocks and granites displaying mingling relations. The mafic rocks are olivine gabbros to quartz-diorites, and the granites are ...
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(2006)The 560-550 Ma blueschists and associated rocks in Anglesey, UK were derived from a subduction-accretion complex. The blueschist unit is divided into three mineral zones by two newly mapped metamorphic isograds; zone I ...
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(2006)On the Eastern Tauride Belt, the Cretaceous calc-alkaline Karamadazi Granitoid consists of quartz diorite containing mafic microgranular enclaves (MME) and leucocratic granite. The quartz diorite consists of plagioclase ...
Now showing items 1921-1940 of 43490