Search Results - "Le Roux, Petrus J."

Lithium isotopes in global mid-ocean ridge basalts by Tomascak, Paul B., Langmuir, Charles H., le Roux, Petrus J., Shirey, Steven B.

“…The lithium isotope compositions of 30 well-characterized samples of glassy lavas from the three major mid-ocean ridge segments of the world, spanning a wide…”
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Multi-isotopic and morphometric evidence for the migration of farmers leading up to the Inka conquest of the southern Andes by Barberena, Ramiro, Menéndez, Lumila, le Roux, Petrus J., Marsh, Erik J., Tessone, Augusto, Novellino, Paula, Lucero, Gustavo, Luyt, Julie, Sealy, Judith, Cardillo, Marcelo, Gasco, Alejandra, Llano, Carina, Frigolé, Cecilia, Guevara, Daniela, Da Peña, Gabriela, Winocur, Diego, Benítez, Anahí, Cornejo, Luis, Falabella, Fernanda, Méndez, César, Nuevo-Delaunay, Amalia, Sanhueza, Lorena, Sagredo, Francisca Santana, Troncoso, Andrés, Zárate, Sol, Durán, Víctor A., Cortegoso, Valeria

“…We present isotopic and morphometric evidence suggesting the migration of farmers in the southern Andes in the period AD 1270–1420, leading up to the Inka…”
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Strontium isotope ratios (87Sr/86Sr) of tooth enamel: a comparison of solution and laser ablation multicollector inductively coupled plasma mass spectrometry methods by Copeland, Sandi R., Sponheimer, Matt, le Roux, Petrus J., Grimes, Vaughan, Lee-Thorp, Julia A., de Ruiter, Darryl J., Richards, Michael P.

“…Strontium isotope ratios (87Sr/86Sr) in tooth enamel provide a means to investigate migration and landscape use in humans and other animals. Established…”
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Structural Controls on Shallow Cenozoic Fluid Flow in the Otago Schist, New Zealand by Stirling, Claudine H., Reid, Malcolm R., Waight, Tod E., le Roux, Petrus J., Smith, Steven A. F., Scott, James M., Frank, Madison, Holbek, Simon C., Van Hale, Robert

“…The Otago Schist in the South Island of New Zealand represents an exhumed Mesozoic accretionary prism. Two coastal areas (Akatore Creek and Bruce Rocks) south…”
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Strontium isotope ratios in fossil teeth from South Africa: assessing laser ablation MC-ICP-MS analysis and the extent of diagenesis by Copeland, Sandi R., Sponheimer, Matt, Lee-Thorp, Julia A., le Roux, Petrus J., de Ruiter, Darryl J., Richards, Michael P.

“…This study tests the precision and accuracy of laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) for measuring…”
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Hydrous veined mantle lithosphere and implications for the source of Zealandia intraplate magmas by Cooper, Nadine P., Scott, James M., Brenna, Marco, Palmer, Marshall C., le Roux, Petrus J., Cooper, Alan F., Reid, Malcolm R., Stirling, Claudine H.

“…Although amphibole has long been predicted to be a major component in the mantle source of intraplate volcanic rocks in New Zealand, the physical evidence for…”
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Sr isotopes in metasomatized fault rocks constrain the age of juxtaposition of oceanic and continental lithosphere (Dun Mountain Ophiolite, New Zealand) by Palmer, Marshall C., Scott, James M., Smith, Steven A.F., le Roux, Petrus J., Harris, Chris, Negrini, Marianne, Tarling, Matthew S.

“…The juxtaposition of oceanic and continental lithosphere along major fault zones is a rare but globally significant process that is commonly associated with…”
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Bioarchaeology and evidence of violence from a precolonial later stone age communal burial in South Africa by Mole, Calvin G, Sealy, Judith, Stynder, Deano D, Le Roux, Petrus J, Gibbon, Victoria E

“…This study reports on the bioarchaeology and evidence of interpersonal violence in a group of archaeological skeletons found near Ladismith, Western Cape,…”
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The Dunedin Volcanic Group and a revised model for Zealandia's alkaline intraplate volcanism by Scott, James M., Pontesilli, Alessio, Brenna, Marco, White, James D. L., Giacalone, Emanuele, Palin, J. Michael, le Roux, Petrus J.

“…The intraplate rocks of the Dunedin Volcanic Group (DVG) in New Zealand's South Island erupted in two discrete areas between 25 and 21 Ma before becoming…”
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Basanite cobbles in Pleistocene sediments in Central Otago and their implications for intraplate volcanism and Clutha River paleo-drainage by Scott, James M., Cooper, Alan F., Craw, Dave, le Roux, Petrus J., Dalton, Hayden B., Palmer, Marshall C.

“…The occurrence of volcanic basanite cobbles in Pleistocene terraces at Galloway and in the upper Clutha valley in Central Otago, in an area devoid of known…”
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Strontium isotope evidence for landscape use by early hominins by Copeland, Sandi R, Sponheimer, Matt, de Ruiter, Darryl J, Lee-Thorp, Julia A, Codron, Daryl, le Roux, Petrus J, Grimes, Vaughan, Richards, Michael P

“…Ranging and residence patterns among early hominins have been indirectly inferred from morphology, stone-tool sourcing, referential models and phylogenetic…”
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Garnet Pyroxenite Cumulates from Cretaceous Alkaline Intraplate Magmas Underplate the Zealandia Mantle Lithosphere by Scott, James M, Brenna, Marco, Pearson, D Graham, Auer, Andreas, Faure, Kevin, Harris, Chris, Janney, Philip E, le Roux, Petrus J, Legros, Hélène, Mortimer, Nick, MÜnker, Carsten, Reid, Malcolm R, Smit, Matthijs A, Stirling, Claudine E, Sun, Dave, Woodland, Sarah, van der Meer, Quinten H A

“…Abstract The elemental and isotopic properties of garnet pyroxenites can yield information on lithospheric mantle composition, thermal state, and evolution…”
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Pyrometamorphosed Otago Schist xenoliths cause minor contamination of Dunedin Volcanic Group basanite by Scanlan, Emma J., Scott, James M., le Roux, Petrus J.

“…We examine the pyrometamorphic changes and resulting crustal contamination that occurred when fragments of Otago Schist were entrained and pyrometamorphosed in…”
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Intraplate volcanism on the Zealandia Eocene-Early Oligocene continental shelf: the Waiareka-Deborah Volcanic Field, North Otago by Scott, James M., White, James D. L., le Roux, Petrus J.

“…Volcaniclastic deposits, pillow lavas, dikes and sills of the intraplate Waiareka-Deborah Volcanic Field in North Otago were emplaced into and onto the…”
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Element and Sr–O isotope redistribution across a plate boundary-scale crustal serpentinite mélange shear zone, and implications for the slab-mantle interface by Scott, James M., Smith, Steven A.F., Tarling, Matthew S., le Roux, Petrus J., Harris, Chris, Hoffmann, J. Elis, Scherzer, Sophie, Tulley, Chris J.

“…Fluid flow along crustal plate boundary-scale serpentinite shear zones may provide insights into element transfer at one of Earth's most important but least…”
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Diversity in Socioecological Niches in the Andes (DISENIA): an isotope-based project by Barberena, Ramiro, Tessone, Augusto, le Roux, Petrus J., Lucero, Gustavo, Llano, Carina, Samec, Celeste T., Quintana, M. Fernanda, Mallea, Claudia, Gasco, Alejandra, Guevara, Daniela, Novellino, Paula, Luyt, Julie, Sealy, Judith, Durán, Víctor A.

“…This new project studies the diversity of socioecological niches across the agropastoral transition in the Andes, utilising a multi-isotope approach to track…”
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Distinct scheelite REE geochemistry and 87Sr/86Sr isotopes in proximally- and distally-sourced metamorphogenic hydrothermal systems, Otago Schist, New Zealand by Palmer, Marshall C., Scanlan, Emma J., Scott, James M., Farmer, Lauren, Pickering, Daniel, Wilson, Victoria J., Oelze, Marcus, Craw, Dave, le Roux, Petrus J., Luo, Yan, Graham Pearson, D., Reid, Malcolm R., Stirling, Claudine H.

“…[Display omitted] •In-situ scheelite TE and 87Sr/86Sr distinguish two types of W mineralisation.•Scheelite compositions reflect the source of the…”
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Petrogenesis of amphibole megacrysts in lamprophyric intraplate magmatism in southern New Zealand by Serre, Simon H., van der Meer, Quinten H. A., Waight, Tod E., Scott, James M., Münker, Carsten, Thomsen, Tonny B., le Roux, Petrus J.

“…Sr-Nd-Hf-Pb isotopes and major/trace element data are presented for amphibole megacrysts from two separate instances of lamprophyric intraplate magmatism in…”
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Scale of human mobility in northwestern Patagonia: An approach based on regional geology and strontium isotopes in human remains by Fernández, M. Victoria, Gordón, Florencia, Roux, Petrus J., Winocur, Diego, Lucero, Gustavo, Benítez, Anahí, Rindel, Diego, Della Negra, Claudia, Bernal, Valeria, Barberena, Ramiro

“…Strontium isotopes facilitate the study of human paleogeography and have widened the scope of archaeological enquiries on mobility. We present an approach…”
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In situ 87Sr/86Sr of scheelite and calcite reveals proximal and distal fluid-rock interaction during orogenic W-Au mineralization, Otago Schist, New Zealand by Scanlan, Emma J, Scott, James M, Wilson, Victoria J, Stirling, Claudine H, Reid, Malcolm R, Le Roux, Petrus J

“…The ability of hydrothermal scheelite (CaWO4) and calcite (CaCO3) to bind Sr in their crystal lattices makes them useful minerals for tracing fluid-rock…”
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