Geochemistry and Petrology
Geochemistry and Petrology of Guguruji Amphibolites from Egbe-Isanlu Schist Belt, Southwestern Nigeria
... Abstract Geochemistry and petrology of Guguruji amphibolites from Egbe-Isanlu Schist belt, Southwestern Nigeria has been carried out to determine its nature and geochemical ...
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The petrology and geochemistry of the Gamitagama Lake igneous complex, near Wawa, North Central Ontario.
... The petrology and geochemistry of the Gamitagama Lake igneous The petrology and geochemistry of the Gamitagama Lake igneous complex, near Wawa, North Central Ontario.. complex, near Wa[r] ...
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Enriched end member of primitive MORB melts: petrology and geochemistry of glasses from Macquarie Island (SW Pacific)
... glass; petrology; eration, segregation and extraction ...& geochemistry Bickle, 1988; Natland, 1989) predict that discrete primary melts are extremely rare or even absent in the oceanic ...
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Geochemistry and Petrology of Basic Volcanic Rocks of Jabal Al Haruj Al Aswad, Libya
... Accessibility of lava fields. Morphological and lithological characteristics observable in the field. Superposition of the lava flows and drainage pattern. Field evidence has revealed that each of these criteria are ...
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Geochemistry and petrology of the most recent deposits from Cotopaxi volcano, Northern Volcanic Zone, Ecuador.
... andesite that had 238 U excesses and are older than 350 ka. Zircon crystals in the rhyolites record assimilation of the 2.1 crust of the South American craton. 4) The configuration of the rhyolite-andesite plumbing at ...
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Geochemistry and petrology of ~ 3.8 Ga mafic - ultramafic enclaves in the Itsaq Gneiss Complex, SW Greenland
... This study provides new petrological observations and for the first time combined comprehensive major and trace element data for Eoarchean ultramafic rocks from th[r] ...
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Geochemistry and petrology of selected sediments from Bukit Song, Miri, Sarawak, Malaysia, with emphasis on organic matter characterization
... This study focused on the integration of geochemical parameters, such as organic geochemical fossils (biomark- ers), analysis of organic richness, organic matter composi- tion and therm[r] ...
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Volcanology, petrology and geochemistry of Lascar volcano, northern Chile
... I V .2 Devitrified glass inclusion in plagioclase phenocryst from LA-147, a dacitic pumice from the Soncor Flow, before and after heating at 900°C for 1 hour.. The glass inclusion h[r] ...
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The petrology and geochemistry of the Wilis and Lawu volcanoes, East Java, Indonesia
... The geochemical and isotopic characteristics of both the pre-caldera Pawonsewu and post-caldera Argokalangan andesites are consistent with an origin largely by crystal-liquid f[r] ...
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The petrology and geochemistry of the Wilis and Lawu volcanoes, East Java, Indonesia
... It was done using the energy-dispersal analytical system with beam current at the specimen surface of 20 rnA, and accelerating potential of 1 5 kv. 1.5.3. Isotope geochemistry Sr and Nd were separated using an ion ...
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Mineralogy, petrology and geochemistry of some zoned diorite complexes in Scotland
... This is a quartz microdiorite with porphyritic texture where medium plagioclase, ortho- and clinopyroxene and biotite phenocrysts are set in a groundmass of fine grained pyroxenes, plagi[r] ...
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Provenance of Bengal Shelf Sediments: 2. Petrology and Geochemistry of Sand
... Although the Ganga and Brahmaputra drain also different geological domains, the Indian shield and the Trans-Himalayan batholiths and suture zone, respectively, the two rivers receive a large amount of detritus from the ...
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Distribution, petrology, geochemistry and geochronology of carbonate assemblages at the Olympic Dam deposit
... Table 3.6: Selected major and minor element concentrations of the vein magnetite (sample OD422).. Table 3.7: Selected trace element concentrations for the vein magnetite (sample OD422).[r] ...
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The structure, petrology and geochemistry of the Tibchi younger granite ring complex, Nigeria
... Plate 4.4.2F Texture of ferrohedenbergite microsyenite enclave in granite porphyry ring-dyke (T5). Note tabular io prismatic crystals of feldspar ^white) and granular pyroxene (dark).[r] ...
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Mineralogy, petrology and geochemistry of Caradocian phosphorites, N Wales, U K
... Major and trace element data were analyzed statistically utilizing the Statistical Package for the Social Sciences (SPSS) on twin processor digital Vax - 11/780 computer (St. Andrews Vax "A" (SAVA) and St. Andrews Vax ...
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Geochemistry, petrology, and mineralization in volcanic rocks located in south Neyshabour, NE Iran
... 2.2. Major and trace element geochemistry According to the petrographic studies, twenty samples of unaltered rocks were selected for chemical analysis. The selected samples were crushed and powdered using mild ...
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Geology, Petrology and Geochemistry of Volcanic Rocks Around Arba Minch, Southern Ethiopia
... Besides to the geological mapping data, petrographic and geochemical results confirmed that the study area is covered by rocks units such as aphanitic basalt, Porphyritic[r] ...
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Mineralogy, Petrology, and Geochemistry of Miocene Silicic Lavas and Pyroclastic Flows, Goldfield-Superstition Volcanic Province, Central Arizona.
... In order to better establish the details for how the G-SVP fits into the Miocene volcanic history of southwestern North America, I have examined a suite of 16 silicic lavas and pyroclastic rocks for a detailed ...
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The petrology, geochemistry, and age of lunar regolith breccias Miller Range 090036 and 090070: insights into the crustal history of the Moon
... Feldspathic lunar meteorites and their implications for compositional remote sensing of the lunar surface and the composition of the lunar crust.. Compositional and l[r] ...
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The petrology, geochemistry, and age of lunar regolith breccias Miller Range 090036 and 090070: insights into the crustal history of the Moon
... INTRODUCTION Lunar meteorites are an important source of material from the Moon; they provide information about the geology and geochemistry of terrains different from regions sampled during the Apollo and Luna ...
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