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GeologyScience Repository: Recent submissions
Now showing items 521-540 of 43265
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(2006)Tectonic escape is frequently considered to result from compression in a collisional belt, a free boundary opening the way to lateral extrusion of rigid blocks. However, in Anatolia the complex tectonic history provides ...
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(2006)Movement of the Adria microplate is one of the main elements for understanding crustal deformations in the central Mediterranean and central Europe. To study present-day tectonics in Adria and the nature of its boundary ...
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(2006)New U-Pb sensitive high-resolution ion microprobe (SHRIMP) dating of zircon from the ultrahigh-pressure Sulu terrane, eastern China, records three events in the evolution of the orogen. Peak ultrahigh-pressure and retrograde ...
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(2006)A new numerical code for simulating flows of granular material, TITAN2D, is used to model the Merapi-type block and ash flows resulting from the 1991 eruption of Colima Volcano, México. The 1991 block and ash flows reached ...
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(2006)The southern Central Andes of Argentina between 35° and 39°S latitude can be divided into two sectors with contrasting geological histories. The boundary between the sectors coincides with the Cortaderas lineament. North ...
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(2006)Recent studies on the evolution of the Dead Sea basin have shed light on the intricate tectonic regime of the area. Combined with newly available data from Jordan, a new picture of a symmetrical deep basin is emerging. ...
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(2006)Colima volcano is situated at the western edge of the Mexican volcanic belt within the Colima rift zone. This contribution presents new geochemical and Sr-Nd-Pb-O isotope data for Colima volcano rocks and plutonic xenoliths ...
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(2006)Networks of databases and tools are being constructed in the geosciences to facilitate geoscientific computing and to stimulate new research. These efforts are contributing to an emerging geoscientific cyberinfrastructure ...
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(2006)The westward motion of Turkey relative to Eurasia between the North and East Anatolian faults has been cited as one of the best examples of lateral transport of continental crust from a collision zone, in this case the ...
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(2006)Obtaining reliable estimates for the timing of eclogite-facies metamorphism is critical to establishing models for the formation and exhumation of high-pressure and ultrahigh-pressure (UHP) metamorphic terranes in collisional ...
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(2006)The transition from Hadean-style convective overturn, driven by heating from below, and Phanerozoic-style plate tectonics, driven by the sinking of cool lithospheric slabs, was a major turning point in the thermal evolution ...
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(2006)Detailed analysis of air gun lithoseismic profiles in the north Aegean basin has permitted construction of a tectonic map on the pre-existing detailed bathymetric map. The basin is structurally subdivided into three parts. ...
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(2006)Ultramafic and mafic xenoliths entrained in late Oligocene dikes of intraplate origin provide information about the composition of the lower crust and the processes operating beneath the eastern Rhodope metamorphic core ...
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(2006)Western Anatolia (Turkey) has experienced discrete pulses of widespread volcanism since the collision of the Sakarya and Tauride continental blocks in the early Eocene. Underplating of the leading edge of the Tauride ...
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(2006)Closure of the Neo-Tethyan Ocean in the Turkish sector of the Alpine-Himalayan orogen by ca. 12 Ma was succeeded by deformation of a domain between the Eurasia plate, presently bounded by the North Anatolian fault, and the ...
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(2006)Evidence is presented relating to the tectonic evolution of the Limpopo Belt of southern Africa. It is demonstrated that this evolution was protracted, lasting at least 700 m.y. between ca. 2.7 and ca. 2.04 Ga, and comprised ...
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THE LOWER TOLUCA PUMICE: A CA. 21,700 YR B.P. PLINIAN ERUPTION OF NEVADO DE TOLUCA VOLCANO, MÉXICO (2006)Approximately 21,700 yr B.P., after a period of quiescence of ̃4800 yr, Nevado de Toluca volcano erupted, producing the Lower Toluca Pumice deposit. The activity generated a 24-km-high Plinian column that lasted ̃11-13 h ...
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(2006)Deep-tow sidescan sonar and subbottom profiler data (from the 1999 MEDINETH survey), together with observations from the submersible Nautile (from the 1998 MEDINAUT survey), have been used to examine the occurrence of mud ...
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(2006)Hillslope stability depends strongly on local conditions, such as lithology and rock strength, degree of saturation, and critical slope angle. Common triggers for slope failure include severe storms, earthquakes, and removal ...
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(2006)A handful of investigative teams in several parts of the world are studying abundant biological communities in caves formed by sulfuric-acid speleogenesis. These caves are atypical in terms of origin, chemistry, and ecosystem ...
Now showing items 521-540 of 43265