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An introduction to the geochemistry and geophysics of the Antarctic mantle
Geological Society, London, Memoirs, 2022Abstract The Antarctic mantle, bounded between the core and the Mohorovičić discontinuity, is one of the most difficult targets of study on Earth because of ice cover and rare outcrops. A multidisciplinary approach is adopted in this volume, using petrology, geochemistry, remote-sensed data and geodesy to characterize the Antarctic mantle ...
Adam P. Martin +2 more
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The geochemistry of carbon in mantle peridotites
Geochimica et Cosmochimica Acta, 1984Abstract Carbon abundances have been determined in mantle xenoliths from alkalic basalts and kimberlites and interpreted in terms of the nature and distribution of the C-rich phases. Anhydrous Cr-diopside Group I spinel lherzolites from basalts typically contain 15–50 ppm C, and amphibole-bearing ones have only marginally higher concentrations (40 ...
E.A. Mathez, V.J. Dietrich, A.J. Irving
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Geochemistry of Dharwar ultramafics and the Archaean mantle
Lithos, 1975Abstract Geochemical and petrological studies on serpentinised ultramafics of Kadakola, Mysore State, India, indicate that the Archaean mantle beneath the Indian Shield was of peridotitic in nature. This protomantle in the Archaean period was undifferentiated with higher concentrations of siderophile and transitional elements.
V. Divakara Rao +3 more
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About this title - The Geochemistry and Geophysics of the Antarctic Mantle
Geological Society, London, Memoirs, 2023This Memoir is the first dedicated to the Antarctic mantle. It is a cross-disciplinary reference work combining geochemistry and geophysics to characterize Antarctic mantle properties. Through observations and modelling the mantle structures, compositions and dynamics are characterized at regional and continental scales by subject experts ...
A. P. Martin, W. van der Wal
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The geochemistry and evolution of early precambrian mantle
Contributions to Mineralogy and Petrology, 1977Seven high-purity cumulate clinopyroxenes from 2.7 b.y. maficultramafic rock associations from the Abitibi belt, Superior Province, Canada, have been analyzed for major elements and K, Rb, Cs, Ba, Sr and 87Sr/86Sr ratio. Attempts to reconstruct the trace element patterns of the original parent magmas were partially successful; Sr contents (140 ppm), K ...
Stanley R. Hart, Christopher Brooks
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Halogen geochemistry of mantle fluids in diamond
AIP Conference Proceedings, 1995Argon and halogens (Cl, Br and I) have been measured, using 40Ar‐39 Ar stepped heating method, in diamonds from Jwaneng, Orapa (both in Botswana) and Zaire. The samples analysed included cubic (coated) stones and polycrystalline diamonds of eclogitic association. Both these types of diamond contain H2O, CO2, carbonate and silicate inclusions.
R. Burgess, G. Turner
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Types of carbonatites: Geochemistry, genesis and mantle sources
Lithos, 2021Abstract Three types of carbonatites have been identified based on the analysis of alkaline complexes using geological, petrological, and geochemical data. It has been suggested that for distinguishing carbonatite complexes into these three types, the following criteria should be used: a) the alkalinity type (Na- or K- richer primary magmas) and b ...
Nikolay.V. Vladykin, Franco Pirajno
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Geochemistry and models of mantle circulation
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1989Abstract Geochemical data help to constrain the sizes of identifiable reservoirs within the framework of models of layered or whole-mantle circulation, and they identify the sources of the circulating heterogeneities as mainly crustal and/or lithospheric, but they do not decisively distinguish between different types of circulation ...
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1979
The degree to which the mantle can be considered chemically uniform depends partly on the scales at which phenomena are analyzed. Many key geophysical observations (e.g., seismic velocities) relate to scales of 10–100 km. A key result discussed in Chapter 1 is that at these scales, the overall pyrolite composition derived for the upper mantle is ...
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The degree to which the mantle can be considered chemically uniform depends partly on the scales at which phenomena are analyzed. Many key geophysical observations (e.g., seismic velocities) relate to scales of 10–100 km. A key result discussed in Chapter 1 is that at these scales, the overall pyrolite composition derived for the upper mantle is ...
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Geochemistry and petrology of Victorian mantle xenoliths
2021This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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