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GeologyScience Repository: Recent submissions
Now showing items 21-40 of 37451
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(2005)В настоящее время все больше внимания уделяется проблеме добычи углеводородов, относящихся к категории трудноизвлекаемых. К данному типу относятся запасы, приуроченные к пластам со сложной геологической структурой. В ...
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(2005)Рассмотрены принципы среднемасштабного неотектонического картирования на примере зоны сочленения древней Сибирской платформы и молодой Западно-Сибирской плиты. В качестве базового элемента предлагается вместо обычно ...
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(2005)Осадочный чехол Якутской алмазоносной провинции (ЯАП) характеризуется обилием нафтидо- проявлений разного масштаба и характера в очень широком стратиграфическом диапазоне. На территории ЯАП открыто несколько месторождений ...
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(2005)Впервые на фоне хронозональных стратиграфических подразделений рассмотрена биолитоценотическая (экостратиграфическая) структура формаций и субформаций силура северо-запада Сибирской платформы. Биолитоценоз определен как ...
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(2005)Early Solar System chronology is usually built with the assumption that the distribution of short-lived radionuclides was homogeneous through the solar accretion disk. At present, there is no unambiguous evidence for a ...
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(2005)Montmorillonite was equilibrated with high normality Cl - solutions to assess the possible presence of MeCl + ion pairs in smectite interlayers which is suggested by chemical modeling of cation exchange experimental studies. ...
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(2005)Analyses of outcrops created by the impact craters Endurance, Fram and Eagle reveal the broad lateral continuity of chemical sediments at the Meridiani Planum exploration site on Mars. Approximately ten mineralogical ...
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(2005)New data returned from the Mars Exploration Rover (MER) mission have revealed abundant evaporites in the sedimentary record at Meridiani Planum. A working hypothesis for Meridiani evaporite formation involves the evaporation ...
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(2005)High abundances of the diaromatic carotenoid isorenieratene derived from photosynthetic green sulfur bacteria (Chlorobiaceae) were found just below the chemocline in an anoxic fjord in Norway, throughout the annual cycle. ...
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(2005)The hydration state of a <2 μm fraction of Ca-saturated SWy-2 montmorillonite was characterised after rapid equilibration (3 hours) under pH-controlled conditions (0.1–12.6 pH range). The solution composition was monitored ...
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(2005)Several structural families reported in this book can be described by using concepts of modular crystallography (Thompson 1978; Veblen 1991; Merlino 1997; Ferraris et al. 2004). This chapter presents three groups of ...
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(2005)The visible and infrared spectral properties of two natural jarosite minerals and a suite of synthetic jarosites and alunite samples are described here. The fundamental stretching and bending vibrations observed in the ...
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(2005)The frameworks of zeolites and related crystalline microporous oxide materials, such as aluminophosphates, silicoaluminophosphates and metaloaluminophosphates, are built up of tetrahedrally coordinated (e.g., Si, Al, P) ...
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(2005)We obtained new archeointensity data from French faience potsherds dated from the 17th to 19th century. These results further document the occurrence of sharp changes in geomagnetic field secular variation in Western Europe ...
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(2005)Garnet-facies continental mantle is poorly understood because the vast majority of mantle xenoliths in continental basalts are spinel peridotite. Peridotite xenoliths from Vitim (southern Siberia) and Mongolia provide some ...
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(2005)We report isotope analyses of helium, neon, argon, and xenon using different extraction techniques such as stepwise dynamic and static crushing, and high-resolution stepwise heating of three mantle xenoliths from Réunion ...
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(2005)Metallogenic provinces in Europe range in age from the Archaean to the Neogene. Deposit types include porphyry copper and epithermal Cu–Au, volcanic-hosted massive sulphide (VMS), orogenic gold, Fe-oxide–Cu–Au, anorthosite ...
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(2005)A recent study of PKiKP / PcP amplitude ratios found surprisingly low values for the change in density (ΔρICB = 0.3 g/cm3) and shear velocity (ΔSICB = 2.0 km/s) across the inner core boundary (ICB). However, because the ...
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(2005)Lherzolite–wehrlite (LW) series xenoliths from the quaternary Tok volcanic field in the southeastern Siberian craton are distinguished from the more common lherzolite–harzburgite (LH) series by (a) low Mg numbers (0.84–0.89) ...
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(2005)The bulk of the ~50-km-thick Martian crust formed at ~4.5 Gyr B.P., perhaps from a magma ocean. This crust is probably a basaltic andesite or andesite and is enriched in incompatible and heat-producing elements. Later ...
Now showing items 21-40 of 37451