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GeologyScience Repository: Recent submissions
Now showing items 221-240 of 43139
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(2006)The commonly held notion among earth scientists that Neoproterozoic low latitude glaciation (ca. 720-585 Ma), sometimes referred to as snowball Earth, caused major extinctions and imparted important evolutionary consequences ...
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(2006)Origin and tectonic setting of the late Neoproterozoic Dokhan Volcanics (ca. 610–560 Ma by whole rock Rb–Sr and ca. 600–590 Ma by SHRIMP U–Pb zircon) in the Egyptian Eastern Desert is debated. Debate concerns the tectonic ...
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(2006)We performed Nb K-edge XAFS spectroscopy experiments on a series of model compounds, natural glasses and anhydrous and fluid-bearing (H2O, F) synthetic glasses doped with 0.1 to 5 wt.% Nb2O5. In addition, we decribe a new ...
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(2006)Earth accreted 4567 Myr ago from largely homogeneous material. From this initial capital of matter, differentiation formed the chemical and physical compartments of core, mantle, continents, ocean and atmosphere, that ...
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(2006)A continuously operated gas monitoring station was emplaced within the epicentral area of the NW Bohemian swarm earthquakes overlying directly the active Mariánské Lázně fault. The recordings of 8-month continuous monitoring ...
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(2006)Lattice-preferred orientations (LPO) of olivine, diopside, enstatite and garnet from the Zhimafang garnet peridotite body in the Sulu ultrahigh-pressure (UHP) metamorphic terrane (China) were measured using the electron ...
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(2006)Mapping at 1:10000 scale of both north (N) and south (S) flanks of the Variscan Monesterio antiform in the Ossa-Morena Zone (southern Spain), in association with detailed petrographic and major element analyses of magmatic ...
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(2006)The aim of this work is to investigate the influence of pH and the metal:humic substances (HS) ratio on HS complexing capacity and the stability and solubility of metal–HS complexes in solution. We selected four HS with ...
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(2006)The Arenig ostracod fauna of Baltoscandia is the oldest known and amongst the most thoroughly studied ostracod faunas in the world. The fauna is dominated by eridostracans and palaeocopes, and comprises altogether about ...
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(2006)The extension of a previously thickened lithosphere is studied through a series of analogue experiments. The models deformed in free and boundary-controlled gravity spreading conditions that simulate the development of ...
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(2006)Laboratory microcosm experiments were performed to evaluate petroleum hydrocarbon biodegradation and phospholipid fatty acid (PLFA) composition in either non-contaminated (NC) or contaminated (C) sedimentary microcosms ...
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(2006)The influence of seasonality in growth and benthic organic matter remineralization on the chemical and isotopic composition of the seagrass Zostera noltii was investigated from March to November over the course of two years ...
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(2006)The two structural units that constitute the ophiolitic complex of the Morais allochthonous complex display different geochemical features. Amphibolites from the lower unit are nearly homogeneous, chemically similar to ...
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(2006)A 3-D density model for the Cretan and Libyan Seas and Crete was developed by gravity modelling constrained by five 2-D seismic lines. Velocity values of these cross-sections were used to obtain the initial densities using ...
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(2006)The crystal structure of the carnotite-type compound Ba-2(UO2)(2)Ti2O8] has been determined by ab initio methods from synchrotron X-ray and neutron powder-diffraction data. We describe the first reported structure of a ...
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(2006)Mafic garnet granulite xenoliths recovered from ∼500 to 600 Ma old eastern Finland kimberlites provide direct information on the petrology and physical properties of the lower cust below the Archean Karelian craton. Mineral ...
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(2006)A north to northwest trending mafic dyke swarm of gabbronoritic and gabbroic composition makes up a significant part of the Archean basement on the island of Ringvassøy in northern Norway. U-Pb geochronology of zircon and ...
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(2006)Significant gas condensate as well as some black oils have been discovered in the Kuqa Depression of Tarim Basin, NW China. Dry gases with high δ13C values occur in the Kelasu structural belt, wet, isotopically light gases ...
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(2006)Continental collisions are the place where granitic plutons result from the melting of crustal components. Granitic plutons are built up by successive input of magma with a variable composition and hence temperature and ...
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(2006)The Lloyds River Fault Zone is a 10-15 km wide amphibolite-grade shear zone that formed during the Ordovician Taconic Orogeny. It separates ophiolites and arc-back-arc complexes formed in lapetus from a periLaurentian ...
Now showing items 221-240 of 43139