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Browsing ELibrary by Title
Now showing items 11694-11713 of 21879
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(2001)Application of the lag-time multiple impacts hypothesis [Poag, 1997b. Palaios 12, 582–590; Poag et al., 2001. Columbia Univ. Press] to the Late Devonian leads to the prediction that the Frasnian–Famennian pulsed extinctions ...
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(2005)Amphiboles have been synthesized by hydrothermal techniques at 500–600 °C, 1 Kbar P(H2O) and low oxygen fugacity (close to NNO) at nominal compositions along the join ferri-clinoholmquistite [squareLi2Mg3Fe3+2Si8O22(OH)2] ...
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(2002)Explains the use of the prefixes hedrals in mineralogy. Use of the terms euhedral, subhedral and anhedral for igneous rock textures and with a certain genetic connotation; Introduction of the terms to define the nature of ...
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(2004)The deep structure of the gabbro–anorthosite–rapakivi granite (“AMCG-type”) Korosten Pluton (KP) in the northwestern Ukrainian Shield was studied by 3-D modelling of the gravity and magnetic fields together with previous ...
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(1999)The ice-age hypothesis of Muller and MacDonald (1995, 1997a, 1997b) has two parts: (a) The 100-kyr cycle does not owe its existence to Milankovitch forcing; and (b) variations in inclination of Earth's orbit (i.e., the ...
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(2001)H2O storage and release in deep subducting lithosphere is controlled by complex reaction suites involving a variety of hydrous phases. As a result of its relatively large thermal stability and intermediate composition, the ...
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(1990)The 1985 eruption of Bezymyannyi has been the largest event since the 1956 catastrophic eruption. A directed blast destroyed part of the volcanic dome and deposited specific pyroclastic material. A series of pyroclastic ...
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(2004)The simultaneous eruption in 1996 of andesite from Karymsky volcano and of basalt from the Academy Nauk vent 6km away appears to provide a case of mafic recharge of an andesite reservoir for which the time of recharge is ...
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(2000)I have revised our earlier production rate determination of 21Ne in terrestrial quartz [S. Niedermann, Th. Graf, J.S. Kim, C.P. Kohl, K. Marti and K. Nishiizumi (1994) Earth Planet. Sci. Lett. 125, 341-355], taking account ...
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(2002)The South Baikal earthquake of 25 February 1999 had the main shock in the southwestern part of Lake Baikal. The source of a normal-slip mechanism was associated with the Obruchev (Primorsky)/Angara fault node. This was the ...
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(2004)On 27 May 1995, a large earthquake (Ms 7.6) occurred in the northern part of Sakhalin Island near an uncertain plate boundary between the Okhotsk (or the North American) plate and the Eurasian (or the Amurian) plate. The ...
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(1999)This is the first contribution towards a reevaluation of exposure histories of iron meteorites and of the constancy of the cosmic ray flux over the last billion years, as recorded in these fossil detectors. We have performed ...
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(2002)We report on a new compilation of functions representing the geoelectromagnetic response of the Earth's mantle. The c response functions and newly defined d response functions, the latter of which constitutes a sensitive ...
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(1995)The U-Th-Pb and Sm-Nd isotopic systematics of mineral separates from the Ca-rich ureilite MET 78008 are reported. Extensive acid leaching procedures were used to eliminate terrestrial contamination because the amounts of ...
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(2003)Metasomatites localized in deep fault zones and lacking genetic relations to specific igneous rock bodies are interesting for geochemical characterization of endogenic fluid systems. Quartz-muscovite, alkaline, and ...
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(2004)The Donbas Fold Belt is the compressionally deformed southeasternmost part of the intracratonic late Paleozoic Dniepr-Donets rift basin. It is situated in an intracratonic setting but close to the southern margin of the ...
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(2002)The 660-km seismic discontinuity (660) in Earth’s mantle is generally attributed to the breakdown of the ringwoodite phase of olivine, but other mineral reactions are also thought to occur near 660-km depth. Recently, ...
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(2003)The generally accepted theory of a U-mode sutural ontogeny of prolecanitid ammonoids and their descendants is refuted. The basic suture formula of the order Prolecanitida is E A L U I (not E L U2 U1 I), resembling that of ...
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(2003)The first absolute Ar/Ar dates have been obtained for buried basalts from the pre-Jurassic basement of the West Siberian Plate, 249-250 Ma, which correspond to the Permian-Triassic boundary. The dating shows that magmatism ...
Now showing items 11694-11713 of 21879