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Browsing by Title
Now showing items 16720-16739 of 38944
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(2004)During recent years there has been a re-assessment of the glacial history of the Russian Arctic, from the Kola Peninsula in the west to the Lena Delta and beyond in the east. In this context, work has been carried out on ...
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(PANGAEA, 2001-10-28)A large section near the village of Hongurei on the Pechora River, ca. 100 km inland from the Barents Sea coast, reveals the following stratigraphic record of the last glaciation: The lowest units are lacustrine silt ...
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(2001)Pumping tests in an outwash sand at the Camp Dodge Site give hydraulic conductivities (K) approximately seven times greater than conventional slug tests in the same wells. To determine if this difference is caused by skin ...
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(1989)Unusual glass pebbles and fragments were found in northwestern Siberia several years ago and studied by us after our geologic and geomorphic survey of the localities. Our assumption that these glasses are tektites predetermined ...
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(1996)The paper discusses the history of East Gondwana and its relationship with West Gondwana in the period preceding the collision, and with the Prototethys. The relationships between East and West Gondwana and the Prototethys ...
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(PANGAEA, 2011-09-14)
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(2001)Iterative comparison between experimental work and numerical simulations has been used to predict oil-recovery mechanisms in fractured chalk as a function of wettability. Selective and reproducible alteration of wettability ...
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(1999)This study investigates the effects of variations in the relative fugacities of oxygen and sulfur on the wetting of mantle olivine by molten sulfide. Experiments were performed on mixtures of San Carlos olivine and synthetic ...
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(2003)This paper describes differences in time-varying post-seismic deformation due to after-slip and viscoelastic relaxation following large strike-slip earthquakes, and how these differences may be exploited to characterize ...
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(2004)Ophiolites have long been recognized as on-land fragments of fossil oceanic lithosphere, which becomes an ophiolite when incorporated into continental margins through a complex process known as ' emplacement '. A fundamental ...
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(2002)Six different 2-D prototype cellular automata models are developed to analyse the main variants of the massless automata proposed so far to reproduce earthquake physics. The analysis aims at identifying the existence of ...
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(1995)The weight ratio of organic carbon to pyrite sulfur (CS) has been observed to fall within a relatively narrow range (2.8 +/- 0.8) in most fine-grained normal marine siliciclastic sediments. Although an increasing number ...
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(2003)The northern China–Mongolia tract exhibited a tectonic transition from contractional to extensional deformation in late Mesozoic time. Late Middle to early Late Jurassic crustal shortening is widely thought to have resulted ...
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(2000)Mechanical erosion rates are important factors in understanding how continents evolve. Mechanical erosion is much faster than chemical erosion, especially for highly elevated regions of the Earth's surface. It is a principal ...
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(2003)This review paper is mainly concerned with a geochemical investigation of the deepest part of the Vostok ice core between 3310 m, the depth at which the palaeoenvironmental record present in the ice above is lost, and the ...
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(2000)Most bolides that collide with the Earth hit the sea. Limited knowledge about marine-target impacts hampers predictions about their perilousness. This study presents geological features that are particular to craters formed ...
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(2000)Numerous publications on shearing as a cause of folding do not refute the idea of buckling being the main process responsible for the formation of fold structures. Deformations of other types may either produce conditions ...
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(2001)When a target variable is sparsely sampled, compared to a densely sampled auxiliary variable, cokriging requires simplifications. In its strict sense, collocated cokriging makes use of the auxiliary variable only at the ...
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(2004)Integrated microstructural observations, X-ray powder diffractometric (XRPD) modal composition, illite Kubler index and chlorite “crystallinity” determinations and vitrinite reflectance measurements were carried out on ...
Now showing items 16720-16739 of 38944