Search Results - "ROLLINSON, HUGH"

The geochemistry of mantle chromitites from the northern part of the Oman ophiolite: inferred parental melt compositions by Rollinson, Hugh

“…Chromitites from a single section through the mantle in the Oman ophiolite are of two different types. Low-cr# chromitites, of MORB affinity are found in the…”
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Dunites in the mantle section of the Oman ophiolite – The boninite connection by Rollinson, Hugh

“…Dunites in the mantle section of the Oman ophiolite contain olivines which show both a wide range of compositions (Fo86.2 to Fo94) and very high magnesium…”
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Archaean crustal evolution in West Africa: A new synthesis of the Archaean geology in Sierra Leone, Liberia, Guinea and Ivory Coast by Rollinson, Hugh

“…A new synthesis of the geology and geochronology of the little-known Archaean rocks in Sierra Leone, Liberia, Guinea and Ivory Coast is presented in order to…”
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Slab and sediment melting during subduction initiation: granitoid dykes from the mantle section of the Oman ophiolite by Rollinson, Hugh

“…New geochemical data are presented for a suite of tonalites, granodiorites, trondhjemites and granites intrusive into depleted mantle harzburgites of the…”
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Geochemical constraints on the composition of Archaean lower continental crust: Partial melting in the Lewisian granulites by Rollinson, Hugh

“…New geochemical data for the Lewisian granulites of NW Scotland show that the protolith to the neoArchaean Scourie granulites was a tonalite containing a mafic…”
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The geochemistry and oxidation state of podiform chromitites from the mantle section of the Oman ophiolite: A review by Rollinson, Hugh, Adetunji, Jacob

“…Data are presented for mantle podiform chromitites from eight localities over 350km strike length of the Oman ophiolite. Chromitite compositions form a…”
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Surprises from the top of the mantle transition zone by Rollinson, Hugh

“…Recent studies of chromite deposits from the mantle section of ophiolites have revealed a most unusual collection of minerals present as inclusions within the…”
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Polymineralic inclusions in mantle chromitites from the Oman ophiolite indicate a highly magnesian parental melt by Rollinson, Hugh, Mameri, Lucan, Barry, Tiffany

“…Polymineralic inclusions interpreted as melt inclusions in chromite from the dunitic Moho Transition Zone in the Maqsad area of the Oman ophiolite have been…”
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Using geochemical data: evaluation, presentation, interpretation / Hugh R. Rollinson by Rollinson, Hugh R

“…The advent of automated geochemical analytical techniques over the last two decades has brought about significant changes in the field of geochemistry,…”
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Chromite in the mantle section of the Oman ophiolite: A new genetic model by Rollinson, Hugh

“…This paper reviews the compositional data (major elements, platinum group element [PGE] concentrations, Os‐ and O‐isotopes) for chromites from the mantle…”
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The growth of the Zimbabwe Craton during the late Archaean; an ion microprobe U-Pb zircon study by Rollinson, Hugh R, Whitehouse, Martin

“…U-Pb zircon ages obtained by ion microprobe are presented for late Archaean granitoids from the Zimbabwe Craton and the North Marginal Zone of the Limpopo…”
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Do all Archaean TTG rock compositions represent former melts? by Rollinson, Hugh

“…•New data suggest that Archaean TTGs are not melts but rather cumulus enriched crystal mush.•Supporting evidence is presented for TTGs from the Lewisian…”
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Metamorphic history suggested by garnet-growth chronologies in the Isua Greenstone Belt, West Greenland by Rollinson, Hugh

“…Compositional maps for garnets from the five tectonic domains of the Isua Greenstone Belt in West Greenland are used to identify episodes of garnet growth…”
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Chromite in the Mantle Section of the Oman Ophiolite： Implications for the Tectonic Evolution of the Oman Ophiolite by ROLLINSON, Hugh, ADETUNJI, Jacob

“…Chronlite in the Oman ophiolite is located in the mantle section of the ophiolite sequence and forms abundant small poditbnndeposits throughout the length of…”
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The nature of the subcontinental lithospheric mantle beneath the Arabian Shield: Mantle xenoliths from southern Syria by Nasir, Sobhi, Rollinson, Hugh

“…Rare earth element and Sr- and Nd-isotopic data are presented for clinopyroxenes and amphiboles from mantle harzburgite and lherzolite xenoliths from the…”
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Magma mingling in plagiogranites of the Oman ophiolite suggests an origin by fractional crystallisation by Rollinson, Hugh

“…Late-stage plagiogranites in the Oman-UAE ophiolite are frequently associated with layered and massive gabbro bodies, intrusive into the mid-crustal section of…”
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The growth of the Zimbabwe craton during the Neoarchaean by Rollinson, Hugh

“…New geochemical data demonstrate the similarity between Neoarchaean TTGs found in the middle crust of the Zimbabwe Craton and the lower crust of the Northern…”
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New models for the genesis of plagiogranites in the Oman ophiolite by Rollinson, Hugh

“…The formation of tonalites, trondhjemites and granodiorites in oceanic crust, here grouped together as plagiogranites, offers an important opportunity to…”
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Eclogite xenoliths in west African kimberlites as residues from Archaean granitoid crust formation by Rollinson, Hugh

“…Eclogites are a comparatively rare but petrologically important member of kimberlite xenolith suites. Their broadly basaltic chemistry has led many authors to…”
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The rare earth element geochemistry of mafic granulites from the Neoarchaean northern marginal zone of the Limpopo Belt, Zimbabwe: Insights into mantle processes during an episode of crustal growth by Rollinson, Hugh

“…The granulites of the Northern Marginal Zone of the Limpopo belt, Zimbabwe represent the lower crust of the Zimbabwe Craton. They are predominantly felsic in…”
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