Multidisciplinary research leading to utilization of extraterrestrial resources [PDF]
Progress of the research accomplished during fiscal year 1972 is reported. The summaries presented include: (1) background analysis and coordination, (2) surface properties of rock in simulated lunar environment, (3) rock failure processes, strength and
Fogelson, D. E.
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Geophysical Research LettersThe brittle‐ductile rheological behavior in subduction zones is commonly proposed to explain deep transient slips. Generally observed at large scales in tectonic “mélanges”, here we show that it is also observed at the grain scale in exhumed blueschist ...
A. Maitre +3 more
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Relations between extensional tectonics and magmatism within the Southern Oklahoma aulacogen [PDF]
Variations in the geometry, distribution and thickness of Cambrian igneous and sedimentary units within southwest Oklahoma are related to a late Proterozoic - early Paleozoic rifting event which formed the Southern Oklahoma aulacogen.
Gilbert, M. C., Mcconnell, D. A.
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The gabbro-eclogite phase transition and the elevation of mountain belts on Venus [PDF]
Among the four mountain belts surrounding Lakshmi Planum, Maxwell Montes is the highest and stands up to 11 km above the mean planetary radius and 7 km above Lakshmi Planum.
Namiki, Noriyuki, Solomon, Sean C.
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Geoquímica do Gabro Coronítico de Amparo (RJ) [PDF]
Anuário do Instituto de Geociências, 2002 The aim of this paper is to present geochemical data and some petrological aspects of the Amparo gabbroic (hyperite) body, located approximately 30 km east of the town, Nova Friburgo, Rio de Janeiro State. Ten samples of these basic rocks were analysed
Isabel Pereira Ludka +1 more
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Correlation of magnetic susceptibility with 18O data in magnetite- and ilmenite-type granites from Iberian massif [PDF]
, 2012 The relationship between oxygen isotopic values and magnetic susceptibility composition on 11 Variscan Portuguese granites has been investigated. Whole-rock oxygen-isotope (18O ) values for Vieira do Minho (VM), Vila Pouca de Aguiar (VPA), Chaves ...
Lopes, José Carrilho +4 more
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Characteristics of ∼40 Ma Mafic Rocks in North Tibet and Their Tectonic Implications
Geochemistry, Geophysics, GeosystemsSeveral magmatic belts are present in the Tibetan Plateau. Among these, the Qiangtang magmatic belt in North Tibet remains elusive. In particular, the petrogenesis, magma source, and tectonic implications of the ultramafic to mafic rocks in the North ...
Shifeng Wang +3 more
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, 2003 Quartz veins hosted by the high-grade crystalline rocks of the Modum complex, Southern Norway, formed when basinal fluids from an overlying Palaeozoic foreland basin infiltrated the basement at temperatures of c.220degreesC (higher in the southernmost ...
Boyce, A.J. +3 more
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DIFFERENT GEOCHEMICAL SIGNATURES DEVELOPED IN BASIC MAGMATIC ROCKS OF MT. KALNIK (NORTH CROATIA)
Rudarsko-geološko-naftni Zbornik, 2004 Basic magmatic rocks of Mt. Kalnik experienced hydrothermal alteration and low grade metamorphism. In such circumstances the most useful tracers of their magma sources and tectonic settings are REE patterns and other normalized trace element abundance ...
Maja Vrkljan, Vesnica Garašić
doaj
Evidence for spreading in the lower Kam Group of the Yellowknife greenstone belt: Implications for Archaean basin evolution in the Slave Province [PDF]
The Yellowknife greenstone belt is the western margin of an Archean turbidite-filled basin bordered on the east by the Cameron River and Beaulieu River volcanic belts (Henderson, 1981; Lambert, 1982). This model implies that rifting was entirely ensialic
Helmstaedt, H., Padgham, W. A.
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