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The role of mechanical mixing in the formation of reaction zones in subduction-related melange
(2013)
Traverses across metamorphic reaction zones at contacts between mafic rocks and ultramafic mélange matrix were analyzed in two mélange zones (Catalina Schist, Santa Catalina Island, CA, and Attic-Cycladic ...
CONSTRAINTS ON THE DEPOSITIONAL AGES OF LESSER HIMALAYAN ROCKS IN CENTRAL NEPAL AND THEIR STRUCTURAL IMPLICATIONS
(2009)
The lack of good exposures and paucity of datable horizons in central Nepal has hindered the ability of geologists to piece together a relatively cohesive and straightforward stratigraphic succession within the Lesser ...
Quantitative modeling of mantle heterogeneity and structure
(2010)
Mantle-derived rocks, particularly mid-ocean ridge basalts (MORB) and intraplate ocean island basalts (OIB), provide insights into the compositional heterogeneity and first-order structural make-up of the modern mantle; ...
Petrogenesis of Peraluminous Granites from the Fosdick Mountains, Marie Byrd Land, West Antarctica
(2013)
Granites from the Fosdick Mountains, West Antarctica were analyzed for major and trace elements as well as Sr-Nd isotopes ratios in order to investigate the sources and processes associated with granite formation at a ...
Metals in Arc Magmas: The Role of Cu-Rich Sulfide Phases
(2011)
Based on experiments performed on hydrous andesitic melts at 1000°C, 150 MPa, <italic>f</italic>O<subscript>2</subscript> from the Co-CoO to Ni-NiO buffer, and log <italic>f</italic>S<subscript>2</subscript> equal to -0.5 ...
Anatexis and crustal differentiation: Insights from the Fosdick migmatite-granite complex, West Antarctica
(2014)
In the Fosdick migmatite-granite complex of West Antarctica, U-Pb geochronology of monazite in migmatites and zircon in granites records two episodes of high-temperature metamorphism, one in the Devonian-Carboniferous and ...
Origin of the anomalous sulfur isotope composition of the Rustenburg Layered Suite (Bushveld Complex), South Africa
(2019)
The 2.06 Ga Bushveld Magmatic Province (BMP) hosts the largest platinum group element (PGE) reserve of the world that occurs mainly as sulfide-rich layers within the Rustenburg Layered Suite (RLS), and also in mineralized ...
THE GEOCHEMICAL BEHAVIOR OF SCANDIUM DURING FRACTIONAL CRYSTALLIZATION AND IMPLICATIONS FOR ORE FORMATION
(2020)
Demand for scandium is increasing due to the use of scandium-aluminum alloys in the aerospace and sporting goods industries, and in solid-oxide fuel cells. Scandium deposits are associated with mafic intrusions and laterites, ...
Petrologic and geochronologic constraints on the thermal and structural evolution of paleo-subduction interfaces
(2020)
In subduction zones, the interface between the downgoing slab and overriding plate controls a number of important dynamic processes. Both the rheologic behavior and thermal structure of the interface influence fluid release ...
CHARACTERIZING THE DURATION, PERIODICITY AND CHEMICAL IMPACT OF FLUID TRANSPORT IN THE SUBDUCTING SLAB: INSIGHTS FROM ISOTOPE GEOCHEMISTRY OF HIGH-PRESSURE METAMORPHOSED OCEANIC CRUST
(2021)
Subduction zones are key loci of geochemical cycling and natural hazards on Earth including large earthquakes and explosive volcanic eruptions. Fluids produced during subduction are thought to play a role in all these ...