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Article
Sr and Pb isotopic disequilibrium between coexisting plagioclase and orthopyroxene in the Bushveld Complex, South Africa: microdrilling and progressive leaching evidence for sub-liquidus contamination within a crystal mush
Progressive leaching of plagioclase for Sr isotopes and microdrilling for Sr and Pb isotopes from grains of plagioclase and orthopyroxene from the Critical Zone and the Lower Zone indicates that these minerals...
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Article
Hornblende gabbro sill complex at Onion Valley, California, and a mixing origin for the Sierra Nevada batholith
The steep crest of the Sierra Nevada, California, near Onion Valley, exposes natural cross sections through a mafic intrusive complex that formed as part of the Mesozoic Sierra Nevada batholith. Sheeted sills...
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Article
Exposure of a late cretaceous layered mafic-felsic magma system in the central Sierra Nevada batholith, California
New U-Pb zircon ages for the Lamarck Granodiorite, associated synplutonic gabbro and diorite plutons, and two large mafic intrusive complexes that underlie them in the Sierra Nevada batholith are 92±1 Ma. Thes...
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Wear Testing of Materials for Machines
The “pin on disc” and the “crossed cylinder” methods have been studied, with the collaboration of manufacturers and users, in a number of research programmes on the wear behaviour in industrial presses; and on...