Results 131 to 140 of about 1,492 (184)

Viscosity of peridotite liquid

Earth and Planetary Science Letters, 2004
The Newtonian viscosity of molten peridotite has been determined experimentally at superliquidus and supercooled conditions. The high-temperature determinations were obtained using a concentric cylinder technique employing constant high-speed deformation. The low-temperature determinations have been obtained from the analysis of the glass transition in
Daniele Giordano, A R L Nichols, D B Dingwell   +2 more
exaly   +2 more sources

Weathering crusts on peridotite

Contributions To Mineralogy and Petrology, 2015
Chemical weathering of dark-green massive peridotite, including partly serpentinized peridotite, produces a distinct and remarkable brown weathering rind when exposed to the atmosphere long enough. The structure and mineral composition of crusts on rocks from the Ronda peridotite, Spain, have been studied in some detail.
Kurt Bucher, Íngrid Stöber, Bucher Kurt   +2 more
exaly   +3 more sources

Melting of Peridotite to 140 Gigapascals

Science, 2010
Under Pressure In order to understand the behavior of materials in the solid deep Earth, it is important to be able to estimate how a material melts at high pressure. To this end, Fiquet et al. (p.
Fiquet, G., L. Auzende, A., Siebert, J., Corgne, A., Bureau, H., Ozawa, H., Garbarino, G.   +6 more
openaire   +2 more sources

Orogenic, Ophiolitic, and Abyssal Peridotites

2007
"Tectonically emplaced" mantle rocks include subcontinental, suboceanic, and subarc mantle rocks that were tectonically exhumed from the upper mantle and occur:(i) as dispersed ultramafic bodies, a few meters to kilometers in size, in suture zones and mountain belts (i.e., the "alpine," or "orogenic" peridotite massifs - De Roever (1957), Thayer (1960),
Bodinier, Jean-Louis, Godard, Marguerite
openaire   +2 more sources

The partial fusion of peridotite

Bulletin Volcanologique, 1964
In a study of the origin of basalt magma, peridotite has been partially fused and the composition of the liquid phases determined.
A. Reay, P. G. Harris
openaire   +1 more source

The origin of abyssal peridotites: a new perspective

Earth and Planetary Science Letters, 1997
Abyssal peridotites have been interpreted to be residues of mantle melting beneath ocean ridges. Recent experimental data and models of mantle melting allow quantitative tests of this hypothesis. The tests show that abyssal peridotites are not purely melting residues.
Niu, Yaoling, Langmuir, Charles H., Kinzler, Rosamond J.   +2 more
openaire   +4 more sources

Rhodium, gold and other highly siderophile elements in orogenic peridotites and peridotite xenoliths

Chemical Geology, 2011
Abstract The concentrations of Rh, Au and other highly siderophile elements (HSE: Re, Os, Ir, Ru, Pt, Rh, Pd and Au), and 187Os/188Os isotope ratios have been determined for samples from peridotite massifs and xenoliths in order to further constrain HSE abundances in the Earth's mantle and to place constraints on the distributions processes ...
Mario Fischer-Gödde, Harry Becker, Frank Wombacher   +2 more
openaire   +1 more source

Serpentinites, Peridotites, and Seismology

International Geology Review, 2004
Understanding the physical properties of ultramafic rocks is important for evaluating the wide variety of petrologic models for the Earth's upper mantle and lower oceanic crust.
openaire   +1 more source

Peridotites of northwestern Quebec.

1953
Stevenson, J. (Supervisor)
openaire   +1 more source

The Dunites in the Balmuccia peridotite massif.

2007
The Balmuccia massif is dominantly lherzolitic. Dunites are a minor lithotype occurring: a) at the contacts of websterite dykes; b) as tabular bodies associated with layers of Cr-rich spinel; c) as large, decametric lenses typically associated with hornblendite pockets and veins. Type a dunites are 15 cm), olivine coexists with clinopyroxene.
RIVALENTI, Giorgio, MAZZUCCHELLI, Maurizio, BRUNELLI, Daniele, ZANETTI A, TOMMASINI S, BOARI E.   +5 more
openaire   +2 more sources