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Browsing Геология России by Title
Now showing items 7080-7099 of 39195
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(1995)Many ordinary chondrite (OC) chondrules are surrounded by rims that show evidence of appreciable melting and can be called igneous; these rims formed after the melting and solidification of the host chondrule. We studied ...
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(2006)Melting of micrometeorites (MMs) due to atmospheric entry heating causes significant changes in the textures, mineralogies and compositions of particles that obscure their primary properties and greatly complicate ...
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(2002)Trace element abundances in igneous zircons, as determined by electron microprobe and laser-ablation microprobe ICPMS analysis, are shown to be sensitive to source rock type and crystallisation environment. The concentrations ...
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(2001)This study was carried out in the central segment of the East Kamchatka volcanic belt, known for its wide development of ignimbrites which cover an area of -4000 km2. Ignimbrites fill several calderas located in the central ...
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(2012)
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(2001)The Kübler Index (KI) is defined as the full width at half-maximum height (FWHM) of the 10-Å X-ray diffraction peak of illite-smectite interstratified (I-S) clay minerals. The only parameters controlling the Kübler Index ...
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(2005)Smectite illitization was investigated in felsic volcaniclastic rocks from a drill core near the Kakkonda active geothermal system, Japan, using high resolution transmission electron microscopy (HRTEM) that provided ...
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(2000)Illite-smectite (I-S) from Cambrian black shale of both early diagenetic and anchimetamorphic grade was investigated to determine the mechanism of the clay transformation. The layer sequences, the distribution of thicknesses ...
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(1999)Potassium enrichment is common in surface horizons of many paleosols and has been attributed to the formation of authigenic illite from smectites during burial diagenesis. In such cases, the presence of primary smectite ...
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(1987)Titanomagnetite-ilmenite mineralization, i.e., the composition and the mode of occurrence of minerals and their relationships to each other and to gangue minerals, was studied by ore microscopy and by petrographic, X-ra ...
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(2001)Image analysis is a technique used in a number of subjects, but to date not extensively used in the geological sciences. The paper describes the way image analysis is used in the various disciplines and presents an overview ...
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(2002)Scanning probe microscopy (SPM) has become a common tool in mineralogy but distortion of images complicates interpretation and often limit, the amount of information one can extract. Image distortion arises from a discrepancy ...
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(PANGAEA, 2002-03-14)
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(2004)Most analyses of kerogens rely on samples that have been isolated by dissolving the rock matrix. The properties of the kerogen before and after such isolation may be different and all sample orientation information is lost. ...
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(2004)Since the end of the 1970s, teleseismic waves are used routinely to infer the first-order characteristics of the event (location, depth, duration, focal mechanism), but finding the second-order kinematic parameters (spatial ...
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(2002)In a way similar to receiver function imaging, coda of the first arrivals can be used to constrain crustal structure along controlled-source refraction profiles with multicomponent recording. Stacked cross-correlations of ...
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(2003)The large-scale continuous GPS networks that have emerged in the last decade have documented a wide-range of aseismic deformation transients that resulted from physical processes such as aseismic fault slip and magma ...
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(2004)Common reflection surface (CRS) stack technology is applied to seismic data from certain areas of the Donbas Foldbelt, Ukraine, after conventional seismic methods gave unsatisfactory results. On the conventionally processed ...
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(2001)Imaging spectrometry from aircraft or satellite borne sensors has many potential ecological applications. This paper reviews its use for the remote sensing of foliar biochemical concentration, as this is an ecological ...
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(1999)The internal structure of the continental lithosphere holds the key to its creation and development, and this internal structure can be determined using appropriate seismic and electromagnetic methods. These two are ...
Now showing items 7080-7099 of 39195