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Browsing by Title
Now showing items 12237-12256 of 39126
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(1995)A numerical model which describes oxygen isotope exchange during burial and recrystallization of deep-sea carbonate is used to obtain information on how sea surface temperatures have varied in the past by correcting measured ...
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(1995)In an attempt to obtain robust records of past climatic variations, geothermal temperature-depth data have been combined with dendrochronological data to yield high resolution ground temperature histories. Since the ...
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(PANGAEA, 2003-04-11)Oxygen isotope records, radiocarbon AMS data, carbonate and opal stratigraphy, sediment magnetic susceptibility, tephrachronology, and paleontological results were used to obtain detailed sediment stratigraphy and an age ...
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(Федеральное государственное автономное образовательное учреждение высшего образования «Санкт-Петербургский политехнический университет Петра Великого», 2018)Geological models of Digital oil fields (DoF) require information about structural properties of subsurface media. 3D models of structural properties of subsurface media are based on data from field seismic survey. Seismic ...
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(2002)Mid-Cenomanian, precession-controlled (21 ka) chalk-marl couplets of the Cap Blanc Nez section (Anglo-Paris Basin) have been studied with focus on the effects which Milankovitch cycles have had on the palaeoenvironment. ...
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(PANGAEA, 2015-01-06)Marine- and terrestrial-derived biomarkers (alkenones, brassicasterol, dinosterol, and long-chain n-alkanes), as well as carbonate, biogenic opal, and ice-rafted debris (IRD), were measured in two sediment cores in the Sea ...
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Reconstruction of the eruptive activity of Momotombo volcano (Nicaragua) to assess volcanic hazards (Kagoshima Prefectural Government, 1988)
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(1989)The principal phases in the development of the Late Valdai, Late Weichselian, and Late Wisconsin glaciations coincided with a global cooling maximum 18-20 thousand years ago. In recent years, new data allowing to more ...
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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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(2003)Boron concentrations and isotope compositions of fluids and lavas from subduction-zone settings show great potential for elucidating mass flux at Earth's modern convergent margins. However, the fluid-mineral-melt behavior ...
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(PANGAEA, 2016-05-20)Reliable information of past vegetation changes are important to project future changes, especially for areas undergoing rapid transitioning such as the boreal treeline. The application of detailed sedDNA records has the ...
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(2004)The record of both dinoflagellate cysts and benthic foraminifera across the Cretaceous-Tertiary boundary at El Kef, Tunisia, reveals a brief expansion of the Boreal bioprovince into the western Tethys, suggesting that an ...
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(2011)The Sea of Okhotsk is the southernmost area in the Northern Hemisphere where seasonal sea ice is produced every year. The formation of sea ice drives thermohaline circulation in the Sea of Okhotsk, and this circulation ...
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(1987)For zircons of metapelitic gneiss from the Zverev group in the Upper Larba River basin2, uranium-lead dating gave an age of 2.6 b.y. This important estimate is significant because the zircon sample was made up mainly of ...
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(2001)The presence of zircons of crustal origin in the dunites of Kytlym, a subduction-related concentrically zoned dunite–clinopyroxenite–gabbro massif of the Urals Platinum-Bearing Belt, may provide the first direct evidence ...
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(2001)The skeleton of the archosauriform Turfanosuchus dabanensis Young, 1973 is redescribed on the basis of further preparation. For the first time a set of derived features is recognised for diagnosing this species. Re-examination ...
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(2000)Isotopic characterisation of bromine could be a powerful tool for the determination of geological processes. However, no analytical procedures have been published to determine bromine stable isotope composition in natural ...
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(2001)The association of gold and Fe + S ± As phases in mesothermal gold deposits is ubiquitous. Arsenopyrite-löllingite-pyrrhotite-gold textures in amphibolite to granulite facies host rocks have been used to determine the ...
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(1987)The authors in a previous work showed that Fe-Pt alloys in ultramafic rocks are secondary, and proposed a fluid metasomatic model for their genesis, i.e., formation from primary solid solutions of Pt, Ir, Ru and Os via ...
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(2003)This paper reports on the extension of a hydrometeorological model of glacierized basins to incorporate a detailed account of glacier mass balance. In this mass balance module a constant fraction of snow fall is redistributed ...
Now showing items 12237-12256 of 39126