Search Results - "Pearson, D. G."

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Primordial and recycled helium isotope signatures in the mantle transition zone.

Authors: Timmerman, S. Honda, M. Burnham, A. D. et al.

Source: Science (pre-March 2025). 8/16/2019, Vol. 365 Issue 6454, p692-694. 3p. 4 Graphs.

Subjects: Basalt, Earth (Planet), Ratio & proportion, Diamonds, Helium isotopes

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Examination of disperse crystalline phases in polyvinyl chloride.

Authors: Michell, E. W. J. Pearson, D. G.

Source: Journal of Applied Chemistry.; June 1967, Vol. 17, p171-177, 7p

Triple oxygen isotope evidence for a hot Archean ocean.

Authors: McGunnigle, J. P. Cano, E. J. Sharp, Z. D. et al.

Source: Geology; Sep2022, Vol. 50 Issue 9, p991-995, 5p

Ancient roots of tungsten in western North America.

Authors: Elongo, V. Falck, H. Rasmussen, K. L. et al.

Source: Geology; Jul2022, Vol. 50 Issue 7, p791-795, 5p

Protogenetic sulfide inclusions in diamonds date the diamond formation event using Re-Os isotopes.

Authors: Pamato, M. G. Novella, D. Jacob, D. E. et al.

Source: Geology; Aug2021, Vol. 49 Issue 8, p941-945, 5p

Hydrous mantle transition zone indicated by ringwoodite included within diamond.

Authors: Pearson, D. G. Brenker, F. E. Nestola, F. et al.

Source: Nature. 3/13/2014, Vol. 507 Issue 7491, p221-224. 4p. 2 Graphs.

Subjects: Earth's mantle, Hydrosphere (Earth), Water storage, Electric conductivity, X-ray diffraction, Infrared spectroscopy, Raman spectroscopy

Implications for the origins of Eoarchean ultramafic rocks of the North Atlantic Craton: a study of the Tussaap Ultramafic complex, Itsaq Gneiss complex, southern West Greenland.

Authors: McIntyre, T. Pearson, D. G. Szilas, K. et al.

Source: Contributions to Mineralogy & Petrology. Dec2019, Vol. 174 Issue 12, p1-21. 21p.

Subjects: Trades Union Congress, Ultrabasic rocks, Rare earth metals, Osmium, Gneiss, Metasomatism, Platinum group, Earth's mantle

The Metasomatized Mantle beneath the North Atlantic Craton: Insights from Peridotite Xenoliths of the Chidliak Kimberlite Province (NE Canada).

Authors: Kopylova, M G Tso, E Ma, F et al.

Source: Journal of Petrology; Oct2019, Vol. 60 Issue 10, p1991-2024, 34p

Peridotites from Attawapiskat, Canada: Mesoproterozoic Reworking of Palaeoarchaean Lithospheric Mantle beneath the Northern Superior Superterrane.

Authors: Smit, K. V. Pearson, D. G. Stachel, T. et al.

Source: Journal of Petrology. Sep2014, Vol. 55 Issue 9, p1829-1863. 35p.

Subjects: Peridotite, Proterozoic Era, Archaean, Lithosphere, Jurassic Period, Earth's mantle

Geographic Terms: Attawapiskat (Ont.)

Isotopic constraints on the nature and circulation of deep mantle C–H–O–N fluids: Carbon and nitrogen systematics within ultra-deep diamonds from Kankan (Guinea).

Authors: Palot, M. Pearson, D. G. Stern, R. A. et al.

Source: Geochimica et Cosmochimica Acta. Aug2014, Vol. 139, p26-46. 21p.

Subjects: Nitrogen isotopes, Carbon isotopes, Diamonds, Lithosphere, Earth's mantle

Geographic Terms: Kankan (Guinea)

Hf Isotope Systematics of Kimberlites and their Megacrysts: New Constraints on their Source Regions.

Authors: NOWELL, G. M. PEARSON, D. G. BELL, D. R. et al.

Source: Journal of Petrology. Aug2004, Vol. 45 Issue 8, p1583-1612. 30p.

Subjects: Kimberlite, Basalt, Igneous rocks, Regolith, Petrology

Geographic Terms: South Africa

Re–Os and Lu–Hf Isotope Constraints on the Origin and Age of Pyroxenites from the Beni Bousera Peridotite Massif: Implications for Mixed Peridotite–Pyroxenite Mantle Sources.

Authors: PEARSON, D. G. NOWELL, G. M.

Source: Journal of Petrology. Vol. 45 Issue 2, p439-455. 17p. 1 Diagram, 4 Charts, 5 Graphs.

Subjects: Isotopes, Pyroxenite, Rock-forming minerals, Regolith, Eclogite, Diopside

Geographic Terms: Morocco

A Platinum Group Element and Re–Os Isotope Investigation of Siderophile Element Recycling in Subduction Zones: Comparison of Grenada, Lesser Antilles Arc, and the Izu–Bonin Arc.

Authors: WOODLAND, S. J. PEARSON, D. G. THIRLWALL, M. F.

Source: Journal of Petrology. Jan2002, Vol. 43 Issue 1, p171-198. 28p. 1 Diagram, 10 Graphs.

Subjects: Lava, Platinum group, Isotopes, Magnetite

Geographic Terms: Grenada

U‐Pb Geochronology and Lu‐Hf Isotopic Characterization of the Canadian High Arctic Large Igneous Province (HALIP): Comparison to Oceanic Plateau Magmatism.

Authors: Dockman, D. M. Hadlari, T. Pearson, D. G. et al.

Source: Geochemistry, Geophysics, Geosystems: G3. Feb2025, Vol. 26 Issue 2, p1-15. 15p.

Using Microdiamonds in Kimberlite Diamond Grade Prediction: A Case Study of the Variability in Diamond Population Characteristics Across the Size Range 0.2 to 3.4 mm in Misery Kimberlite, Ekati Mine, NWT, Canada.

Authors: Krebs, M. Y. Pearson, D. G. Stachel, T. et al.

Source: Economic Geology & the Bulletin of the Society of Economic Geologists; Mar/Apr2016, Vol. 111 Issue 2, p503-525, 23p

APPLICATION OF THE 190PT-186Os ISOTOPE SYSTEM TO DATING PLATINUM MINERALIZATION AND OPHIOLITE FORMATION: AN EXAMPLE FROM THE MERATUS MOUNTAINS, BORNEO.

Authors: COGGON, J. A. NOWELL, G. M. PEARSON, D. G. et al.

Source: Economic Geology & the Bulletin of the Society of Economic Geologists; Jan/Feb2011, Vol. 106 Issue 1, p93-117, 25p, 3 Black and White Photographs, 1 Diagram, 6 Charts, 1 Graph, 1 Map

Age, Composition and Thermal Characteristics of South African Off-Craton Mantle Lithosphere: Evidence for a Multi-Stage History.

Authors: Janney, P. E. Shirey, S. B. Carlson, R. W. et al.

Source: Journal of Petrology; Sep2010, Vol. 51 Issue 9, p1849-1890, 42p, 1 Black and White Photograph, 6 Charts, 17 Graphs, 1 Map

Trace Element and Sr–Pb–Nd–Hf Isotope Evidence for Ancient, Fluid-Dominated Enrichment of the Source of Aldan Shield Lamproites.

Authors: DAVIES, G. R. STOLZ, A. J. MAHOTKIN, I. L. et al.

Source: Journal of Petrology; Jun2006, Vol. 47 Issue 6, p1119-1146, 28p, 9 Diagrams, 4 Charts, 3 Graphs