Search Results - "Pearce, Mark A"

Microstructural constraints on the mechanisms of the transformation to reidite in naturally shocked zircon by Erickson, Timmons M., Pearce, Mark A., Reddy, Steven M., Timms, Nicholas E., Cavosie, Aaron J., Bourdet, Julien, Rickard, William D. A., Nemchin, Alexander A.

“…Zircon (ZrSiO 4 ) is used to study impact structures because it responds to shock loading and unloading in unique, crystallographically controlled manners. One…”
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A new mode of mineral replacement reactions involving the synergy between fluid-induced solid-state diffusion and dissolution-reprecipitation: A case study of the replacement of bornite by copper sulfides by Adegoke, Idowu A., Xia, Fang, Deditius, Artur P., Pearce, Mark A., Roberts, Malcolm P., Brugger, Joël

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Improving Automated Geological Logging of Drill Holes by Incorporating Multiscale Spatial Methods by Hill, E. June, Pearce, Mark A., Stromberg, Jessica M.

“…Manually interpreting multivariate drill hole data is very time-consuming, and different geologists will produce different results due to the subjective nature…”
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Reaction Coronas at Olivine–Plagioclase Contacts in Host Rocks from the Nova–Bollinger Ni–Cu–Co Deposit, Albany–Fraser Orogen, Western Australia: Evidence of a Magmatic to Metamorphic Continuum by Torres-Rodriguez, Natalia, Barnes, Stephen J, Taranovic, Valentina, Pearce, Mark A, Verrall, Michael, Schoneveld, Louise E

“…Abstract A prominent feature of the cumulate rocks of the Nova intrusions is the presence of reaction coronas between olivine and plagioclase. A particular…”
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Hydrothermal mineral replacement of bastnäsite by rhabdophane and monazite: effects of temperature on mineralogy, REE immobilisation, and fractionation by Knorsch, Manuel, Bamforth, Tobias G., Xia, Fang, Deditius, Artur P., Pearce, Mark A., Schoneveld, Louise, Roberts, Malcolm P.

“…The rare-earth elements (REEs, La–Lu, Y) are essential for the development of renewable technologies. Bastnäsite (REECO 3 F) is a common REE ore mineral that…”
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Carbonate replacement as the principal ore formation process in the Proterozoic McArthur River (HYC) sediment-hosted Zn-Pb deposit, Australia by Spinks, Sam C, Pearce, Mark A, Liu, Weihua, Kunzmann, Marcus, Ryan, Chris G, Moorhead, Gareth F, Kirkham, Robin, Blaikie, Teagan, Sheldon, Heather A, Schaubs, Peter M, Rickard, William D. A

“…The McArthur River (HYC) Zn-Pb-Ag deposit in the Carpentaria Zn belt, northern Australia, is one of the world's largest and most studied sediment-hosted base…”
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Shocked monazite chronometry: integrating microstructural and in situ isotopic age data for determining precise impact ages by Erickson, Timmons M., Timms, Nicholas E., Kirkland, Christopher L., Tohver, Eric, Cavosie, Aaron J., Pearce, Mark A., Reddy, Steven M.

“…Monazite is a robust geochronometer and occurs in a wide range of rock types. Monazite also records shock deformation from meteorite impact but the effects of…”
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The mechanism and kinetics of the transformation from marcasite to pyrite: in situ and ex situ experiments and geological implications by Yao, Xizhi, Xia, Fang, Deditius, Artur P., Brugger, Joël, Etschmann, Barbara E., Pearce, Mark A., Pring, Allan

“…Despite the natural abundance of pyrite and marcasite and their intergrowth, and a wealth of information they can provide on the physical–chemical conditions…”
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High-Grade REE accumulation in regolith: Insights from supergene alteration of an apatite-rich vein at the Kapunda Cu mine, South Australia by Bamforth, Tobias G., Xia, Fang, Tiddy, Caroline J., González-Álvarez, Ignacio, Brugger, Joël, Hu, Si-Yu, Schoneveld, Louise E., Pearce, Mark A., Putnis, Andrew

“…The stratiform and vein-hosted Kapunda Cu deposit in South Australia contains a saprolitized hydrothermal vein with 12.37 wt.% total rare earth oxide (TREO)…”
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Working up an apatite; enigmatic mesoarchean hydrothermal Cu-Co-Au mineralization in the Pilbara Craton by Fox, David C. M, Spinks, Samuel C, Barham, Milo, Kirkland, Christopher L, Pearce, Mark A, Aspandiar, Mehrooz, Birchall, Renee, Mead, Ed

“…Globally, significant examples of hydrothermal Cu-Co mineralization are rare within Archean greenstone belts, especially relative to the endowment of these…”
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Reaction mechanism for the replacement of calcite by dolomite and siderite: implications for geochemistry, microstructure and porosity evolution during hydrothermal mineralisation by Pearce, Mark A., Timms, Nicholas E., Hough, Robert M., Cleverley, James S.

“…Carbonate reactions are common in mineral deposits due to CO 2 -rich mineralising fluids. This study presents the first in-depth, integrated analysis of…”
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The Neoarchean conglomerate-hosted gold of the West Pilbara Craton, Western Australia by Spinks, Sam C, Pearce, Mark A, Le Vaillant, Margaux, Fox, David, Tyler, Ian M, Godel, Belinda, Stromberg, Jessica, Mead, Ed, White, Alistair J. R

“…Recently discovered Au in boulder conglomerate between the Mesoarchean West Pilbara superterrane basement and the overlying volcano-sedimentary stratigraphy of…”
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Geochemical signatures of copper redistribution in IOCG-type mineralisation, Gawler Craton, South Australia by Uvarova, Yulia A., Pearce, Mark A., Liu, Weihua, Cleverley, James S., Hough, Robert M.

“…The Emmie Bluff iron oxide, copper, gold (IOCG) prospect is located in the Olympic Dam district, South Australia, and hosts sub-economic 150-m-thick Cu–Au…”
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Relative strength of mafic and felsic rocks during amphibolite facies metamorphism and deformation by Pearce, Mark A., Wheeler, John, Prior, David J.

“…Field observations of mafic dykes intruded into felsic rocks from the Lewisian Complex, NW Scotland, suggest that the mafic rocks are weaker than the felsic…”
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Primary cumulus platinum minerals in the Monts de Cristal Complex, Gabon: magmatic microenvironments inferred from high-definition X-ray fluorescence microscopy by Barnes, Stephen J., Fisher, Louise A., Godel, Bélinda, Pearce, Mark A., Maier, Wolfgang D., Paterson, David, Howard, Daryl L., Ryan, Christopher G., Laird, Jamie S.

“…An unusual occurrence of Pt-enriched pyroxenites in the Monts de Cristal igneous complex is characterized by unusually high ratios of Pt to other…”
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Hydrothermal alteration at the Karangahake epithermal Au-Ag deposit, Hauraki Goldfield, New Zealand by Simpson, Mark P, Gazley, Michael F, Stuart, Alistair G. J, Pearce, Mark A, Birchall, Renee, Chappell, Debra, Christie, Anthony B, Stevens, Murray R

“…The Karangahake deposit is the third largest gold producer in the Hauraki goldfield, Coromandel, New Zealand. Production was mainly from the Maria and…”
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Plundering Carlow Castle: First Look at a Unique Mesoarchean-Hosted Cu-Co-Au Deposit by Fox, David C.M., Spinks, Samuel C., Pearce, Mark A., Barham, Milo, Le Vaillant, Margaux, Thorne, Robert L., Aspandiar, Mehrooz, Verrall, Mike

“…Economically significant and geologically complex veined Cu-Co-Au mineralization was recently discovered at Carlow Castle in the Pilbara region of northwestern…”
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Mineralogy and geochemistry of atypical reduction spheroids from the Tumblagooda Sandstone, Western Australia by Fox, David C. M., Spinks, Samuel C., Thorne, Robert L., Barham, Milo, Aspandiar, Mehrooz, Armstrong, Joseph G. T., Uysal, Tonguç, Timms, Nicholas E., Pearce, Mark A., Verrall, Michael, Godel, Belinda, Whisson, Brad, Taylor, Kevin

“…Reduction spheroids are small‐scale, biogenic, redox‐controlled, metal enrichments that occur within red beds globally. This study provides the first analysis…”
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Quantification of fold curvature and fracturing using terrestrial laser scanning by Pearce, Mark A, Jones, Richard R, Smith, Steven A. F, McCaffrey, Kenneth J. W

“…Terrestrial laser scanning is used to capture the geometry of three single folded bedding surfaces. The resulting light detection and ranging (LIDAR) point…”
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A pressure-temperature phase diagram for zircon at extreme conditions by Timms, Nicholas E., Erickson, Timmons M., Pearce, Mark A., Cavosie, Aaron J., Schmieder, Martin, Tohver, Eric, Reddy, Steven M., Zanetti, Michael R., Nemchin, Alexander A., Wittmann, Axel

“…Hypervelocity impact processes are uniquely capable of generating shock metamorphism, which causes mineralogical transformations and deformation that register…”
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