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GeologyScience Repository: Recent submissions
Now showing items 61-80 of 43044
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(2006)Speleothem samples from Hulu (eastern China, 32°30′N, 119°10′E) and Dongge (southern China, 25°17′N, 108°5′E) Caves provide a nearly continuous record of the Asian monsoon over the last 160 ka [Wang, Y.J., Cheng, H., ...
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(2006)Major issues involved in the classification of the amphiboles are examined: (1) the role of (OH), Li and Fe3+, (2) the formal definition of a root name, (3) irreducible charge-arrangements and distinct species, (4) the use ...
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(2006)In the Antigonish Highlands, Nova Scotia, Neoproterozoic (ca. 620-605 Ma) magmatism is a local representative of regional arc-related tectonothermal activity that typifies Avalonia and related terranes located along the ...
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(2006)Information on the fossil record of angiosperms has expanded dramatically over the past twenty-five years, and in particular the discovery of numerous mesofossil floras with fossil flowers has added a completely new element ...
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(2006)A 1000-yr record of forest fire activity has been developed using three annually dated ice cores from Eclipse Icefield, Yukon, Canada. Forest fire signals were identified as NH4+ residuals above a robust spline and ...
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(2006)The paleoceanographic history around the Tsugaru Strait since 30.0 cal kyr BP was reconstructed using ecological and biogeographical habitats of diatom species and Q-mode factor analysis of diatom flora in six piston cores. ...
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(2006)The Great Lisbon earthquake has the largest documented felt area of any shallow earthquake and an estimated magnitude of 8.5-9.0. The associated tsunami ravaged the coast of SW Portugal and the Gulf of Cadiz, with run-up ...
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(2006)The first part of the paper summarizes some basic concepts concerning (a) the distribution of Messinian evaporites in the deepest parts of the Mediterranean Sea and (b) the Mediterranean Ridge accretionary wedge and its ...
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(2006)The Great Lisbon earthquake of 1755 with an estimated magnitude of 8.5-9.0 is the most destructive earthquake in European history, yet the source region remains enigmatic. Recent geophysical data provide compelling evidence ...
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(2006)Johnsenite-(Ce), ideally Na12(Ce,La,Sr,Ca,□)3 Ca6Mn3Zr3W(Si25 O73)(CO3)(OH,Cl)2, is a new member of the eudialyte group from Mont Saint-Hilaire, Quebec, and is the W analogue of zirsilite-(Ce). It occurs as deeply etched, ...
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(2006)Lemanskiite, ideally NaCaCu5(AsO4) 4Cl·5H2O, is a new mineral species from the Abundancia mine, El Guanaco mining district, Chile. It is dimorphous with lavendulan and represents the Ca-analogue of zdenekite. It occurs as ...
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(2006)Although Africa was south of the Tethys Sea and originally belonged to the Gondwana, its paleobiogeographical history appears to have been distinct from those of both Gondwana and Laurasia as early as the earliest Cretaceous, ...
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(2006)The determination of the evolving palaeoaltitude of the Tibetan Plateau since the India-Eurasia collision underpins our understanding of how orography in central Asia affects the intensity of the monsoon and hence global ...
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(2006)Rocks of the North American Mid-Continent Rift (MCR) in the Keweenaw Peninsula of northern Michigan display a change in structural trend from east to west, varying in strike from 100° in the east to 35° farther west, before ...
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(2006)In this study, we report the results of an investigation of lithological interpretation of the crust in the central Fennoscandian Shield (in Finland) using seismic wide-angle velocity models and laboratory measurements on ...
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(2006)An improved alkali fusion method followed by HF-HNO3-HClO4 treatment is performed for simultaneous determination of 23 trace elements (Sr, Y, Zr, Nb, Ba, Hf, Ta, Th, U, and REE) by ICP-MS in rock reference materials: ...
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(2006)There is a growing belief that the complex dynamics of seismicity can be better understood by studying the collective behavior of numerous lithosphere instability sources rather than focusing on the details of each of them. ...
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(2006)A geophysical-petrophysical study has been performed in an area WSW of the city of Kiruna, northern Sweden. The sub-regional tectonic setting is dominated by two important shear zones, which define the boundary of a granitic ...
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(2006)Unusual fining upwards coarse conglomerates overlain by sandstones, thin cherts and green shales occur at the top of the deep-water submarine fan deposits of the Oolitic Limestone Member of the Jurassic Guwayza Formation ...
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(2006)The existence of the upper mantle low velocity layer (LVL) below 100 km depth in cratonic areas is tested with surface waves dispersion curves. Given the ambient noise we find that a pronounced LVL (80 km thick and 2% ...
Now showing items 61-80 of 43044