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Browsing by Title
Now showing items 12397-12416 of 39126
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(1993)Depletion of Nb relative to K and La is characteristic of lavas in subduction-related magmatic arcs, as distinct from mid-ocean ridge basalts. Nb depletion is also characteristic of the continental crust. This and other ...
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(2001)This paper reports the first effort to include carbon, water, and heat exchange in a Large Eddy Simulation (LES) model for 3D canopy flows with dynamic response of leaf temperature and stomatal aperture. The LES model ...
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(1997)Application of techniques developed for the interpretation of fluid compositions in high-temperature hydrothermal or geothermal systems to lower-temperature natural gas discharges in New Zealand and the Gulf of Thailand ...
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(1996)We conducted a paleomagnetic study of four sediment cores taken from different regions in the low latitudes of the Pacific Ocean in order to recover relative paleointensity variations during the Brunhes chron. Three cores ...
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(1997)Ocean Drilling Program Sites 883 and 884 were cored as part of a three-site depth transect down the slopes of Detroit Seamount in the North Pacific Ocean. Continuous mineral magnetic and paleomagnetic measurements were ...
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(PANGAEA, 2015-06-05)Pollen productivity estimates (PPE) are used to quantitatively reconstruct variations in vegetation within a specific distance of the sampled pollen archive. Here, for the first time, PPEs from Siberia are presented. The ...
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(1996)Eighteen records of relative paleointensity from marine sediments have been compiled in order to retrace the global changes in geomagnetic intensity during the past 200 kyr. Before dealing with any other source of noise ...
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(2001)In this paper an explanation of the observed decadal variations of the polar motion of the Earth is presented. Recent investigations show that the contribution of surface processes is too small to excite the observed ...
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(2002)We examine the geometry, formation and destruction of relay zones in well-bedded sedimentary sequences containing thrust fault segments with maximum observed displacements of 0.64-8m. Contractional, extensional and neutral ...
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(2006)The behaviour of trace amounts of arsenate coprecipitated with ferrihydrite, lepidocrocite and goethite was studied during reductive dissolution and phase transformation of the iron oxides using [55Fe]- and [73As]-labelled ...
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(1996)Ancient tidal periods extracted from the geologic record are useful to constrain and calibrate theoretical models of the evolution of the earth-moon system. Analysis of rocks that contain such tidal periodicities, termed ...
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(2002)We demonstrate the feasibility and reliability of a new approach to seismic modelling of long-wavelength mantle structure. In doing so, we present new estimates of mantle model uncertainties that successfully explain ...
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(2003)It has been shown that the Cambrian biota contains, in addition to long-known skeletal remains, a great number of soft-bodied microscopic organisms. They are represented by the fossilized remains of bacteria, boring algae, ...
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REMANENT MAGNETIZATION OF MINERAL AGGREGATES AND ITS CONNECTIONS WITH THE NATURAL ELECTRICAL FIELD (1989)The remanent magnetization of rocks is thought to have been produced by the effect of the Earth's magnetic field on the orientation of mineral grains or of their magnetic moment under isothermal conditions, or under ...
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(2001)Tertiary vertebrates collected in 1995 in the Askazansor Fm. (Southwestern Betpakdala, South Kazakhstan) provide new data for systematics and the age of the fossiliferous deposits. The lower part of the Askazansor Fm. ...
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(2001)In elastic wave propagation on a spherically symmetric earth model, a normal mode sum is converted into a sum of equivalent travelling waves by means of a travelling wave decomposition (TWD). For two decades, seismologists ...
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(1993)The Late Permian to Early Triassic Siberian Traps have been sampled by drill core (core SG-9) and from surface exposure (section 1F) in the Noril'sk region of the Siberian Platform, Russia. Combined major, trace element, ...
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(1989)The earth's crust is made up of a hierarchy of blocks of various sizes, embedded in each other. The blocks are separated by joints of corresponding sizes, which also constitute a hierarchy. In particular, blocks encompassing ...
Now showing items 12397-12416 of 39126