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Weathering crusts on peridotite
Contributions to Mineralogy and Petrology, 2015Chemical 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.
K. Bucher, I. Stober, H. Müller-Sigmund
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American Mineralogist, 2018
Peridotites dredged from mid-ocean ridges and glassy mid-ocean ridge basalts (MORB) transmit information about the oxygen fugacity fo2) of Earth’s convecting upper mantle to the surface.
F. Davis, E. Cottrell
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Peridotites dredged from mid-ocean ridges and glassy mid-ocean ridge basalts (MORB) transmit information about the oxygen fugacity fo2) of Earth’s convecting upper mantle to the surface.
F. Davis, E. Cottrell
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Melting of Peridotite to 140 Gigapascals
Science, 2010Under 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. +6 more
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Lithos, 2007
This paper presents field, petrographic-structural and geochemical data on spinel and plagioclase peridotites from the southern domain of the Lanzo ophiolitic peridotite massif (Western Alps). Spinel lherzolites, harzburgites and dunites crop out at Mt. Arpone and Mt. Musinè. Field evidence indicates that pristine porphyroclastic spinel lherzolites are
Piccardo GB, Zanetti A, Müntener O
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This paper presents field, petrographic-structural and geochemical data on spinel and plagioclase peridotites from the southern domain of the Lanzo ophiolitic peridotite massif (Western Alps). Spinel lherzolites, harzburgites and dunites crop out at Mt. Arpone and Mt. Musinè. Field evidence indicates that pristine porphyroclastic spinel lherzolites are
Piccardo GB, Zanetti A, Müntener O
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Rhodium, gold and other highly siderophile elements in orogenic peridotites and peridotite xenoliths
Chemical Geology, 2011Abstract 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, Frank Wombacher
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Viscosity of peridotite liquid
Earth and Planetary Science Letters, 2004The 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
DINGWELL D. B +3 more
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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
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Serpentinites, Peridotites, and Seismology
International Geology Review, 2004Understanding 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.
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The Dawros peridotite, Connemara, Eire
Quarterly Journal of the Geological Society of London, 1957Summary The Dawros peridotites are characterized by a strong banding and evidence of thermal metamorphism exists in the enclosing schists. The banding arises from a rhythmic crystal accumulation ranging through a sequence of dunites and pyroxenites in which the assemblage olivine and orthopyroxene at one extreme passes into the assemblage ...
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