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Now showing items 7925-7944 of 39126
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(PANGAEA, 2010-06-08)
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(2001)Fine-grained laminated deposits are often reported from contemporary and ancient glacimarine sedimentary sequences. Laminated glacimarine sediments form by a variety of processes, including suspension settling from turbid ...
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(1992)The paper presents a geological description and information about the mineral and chemical composition and petrochemical and geochemical characteristics of lamproites, identified in the eastern part of the Baltic Shield. ...
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(1990)Detailed study of alkalic potassium-rich rocks of the Karelia-Kola region has revealed a rock group that fully satisfies petrographic, mineralogic and geochemical criteria for assigning it to the lamproite magmatic series. ...
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(1990)Evidence of Mesozoic lamprophyre volcanism was established by us for the first time for Syria in the rift on the west margin of the Arabian platform. We studied the diatremes of Al Burgal, A'r R'band, Al Asued and Marqikh ...
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(2001)One of the more advanced approaches for simulating groundwater flow in fractured porous media is the discrete-fracture approach. This approach is limited by the large computational overheads associated with traditional ...
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(PANGAEA, 2008-11-03)We present the first ecosystem-scale methane flux data from a northern Siberian tundra ecosystem covering the entire snow-free period from spring thaw until initial freeze-back. Eddy covariance measurements of methane ...
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(2003)Globally, land-use change is occurring rapidly, and impacts on biogeochemical cycling may be influenced by previous land uses. We examined differences in soil C and N cycling during long-term laboratory incubations for the ...
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет», 2020)The data on the geochemical features of the bedrocks and soils of the province are given. Considerable attention is paid to regional abundances, as well as enrichment and dispersion factors of the chemical elements in ...
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LANDSCAPE PRESERVATION UNDER FENNOSCANDIAN ICE SHEETS DETERMINED FROM IN SITU PRODUCED 10BE AND 26AL (2002)Some areas within ice sheet boundaries retain pre-existing landforms and thus either remained as ice free islands (nunataks) during glaciation, or were preserved under ice. Differentiating between these alternatives has ...
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(2003)We present the results of an experimental investigation of the concurrent action of tectonic uplift and climate variation on relief evolution. We designed an experimental apparatus that allows the study of erosion of ...
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(2001)Landscape sensitivity may be discussed in terms of the response of landscape systems to perturbation on different time and spatial scales. Unstable systems behave chaotically but may show self organised criticality, while ...
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(2001)Landscape sensitivity is expressed as the ratio of the change in a system to the change in a landscape component. The larger the ratio, the greater the sensitivity. An array of drivers of landscape change is reviewed, but ...
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LANDSCAPE, REGIONAL AND GLOBAL ESTIMATES OF NITROGEN FLUX FROM LAND TO SEA: ERRORS AND UNCERTAINTIES (2002)Regional to global scale modelling of N flux from land to ocean has progressed to date through the development of simple empirical models representing bulk N flux rates from large watersheds, regions, or continents on the ...
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(1999)Based on the analysis of spatial-temporal distribution of Tabulata and other benthic organisms, organogenic buildups, and lithologic data, position and configuration of seas and continents are depicted for Early Devonian ...
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(2001)Landslide processes are actively stimulated in Kamchatka by atmospheric phenomena (typhoons and cyclones) and also by seismic and volcanic events. A complex of methods is offered here for investigating landslide processes ...
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(2001)The 1911 Ms =8.2 Kemin (Kebin) earthquake in the northern Tien Shan (Kazakhstan, Kyrgyzstan) formed a complex system of surface ruptures nearly 190 km long and numerous landslides and rock avalanches up to tens of millions ...
Now showing items 7925-7944 of 39126