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Désiré Tsozué and Paul-Désiré Ndjigui
Investigation on the mobilization and the redistribution of major, trace and rare-earth elements (REE) was performed along a soil profile developed on gabbro in the semi-arid zone (Northern Cameroon), using mineralogical and geochemical analyses. The gab...
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Gabriella B. Kiss and Federica Zaccarini
Titanite in submarine mafic magmatic rocks of Neotethyan origin was studied to reveal its possible use as an indicator mineral of modern Cyprus-type VMS deposits. Four ore deposit bearing (mineralized) and eight barren (unmineralized) Triassic?Jurassic l...
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Mihaela Toderas, Roland Iosif Moraru, Ciprian Danciu, Grigore Buia and Lucian-Ionel Cioca
Geomechanical assessment of rocks requires knowledge of phenomena that occur under the influence of internal and external factors at a macroscopic or microscopic scale, when rocks are submitted to different actions. To elucidate the quantitative and qual...
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Rodrigo Gonzalez,Hans Niemeyer
Pág. 23 - 48
The interaction between basic and acid magmas has been widely recorded in batholiths and plutons from magmatic arcs. The Sierra de Varas Pluton (SVP), a zoned elliptical granitic body emplaced during the Carboniferous-Permian boundary (~300 Ma), and expo...
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Vittorio Scribano and Serafina Carbone
Geochemical characteristics of middle ocean ridge basalts (MORBs) testify partial melting of spinel-peridotite mixed with a few amounts of garnet-pyroxenite. The latter can be considered either autochthonous products of the crystallization of partial mel...
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Lucie Mathieu
Magmatic processes dominate Fe?Ti?V mineralization and revealing these processes is essential for providing a scientific foundation for exploration models. This study focuses on the metamorphosed Neoarchean (ca. 2728 Ma) tholeiitic layered Lac Doré Compl...
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Viktors Haritonovs, Janis Tihonovs, Juris Smirnovs
Pág. 3485 - 3492
Dolomite is one of the most widely available sedimentary rocks in the territory of Latvia. Dolomite quarries contain about 1,000 million tons of this material. However, according to Latvian Road Specifications, this dolomite cannot be used for average an...
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Uwe Altenberger,Roland Oberhänsli,Benita Putlitz,Klaus Wemmer
Pág. 65 - 81
Five Miocene intrusive complexes are located along the N-trending, nearly trench-parallel San Lorenzo-Balmaceda Lineament in southern Patagonia. These complexes are characterized by mildly alkaline to calc-alkaline magmatism. The deformation and kinemati...
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Miguel A. Parada
Pág. 199 - 210
ABSTRACT. Contribution to the geochemistry of the Papudo-Ouintero Plutonic Complex, Central Chile: petrogenetic implications. The Papudo-Ouintero Plutonic Complex (CPPO) corresponds to a Middle-Upper Jurassic intrusive event developed in the Coastal Rang...
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Miguel A. Parada
Pág. 199 - 210
ABSTRACT. Contribution to the geochemistry of the Papudo-Ouintero Plutonic Complex, Central Chile: petrogenetic implications. The Papudo-Ouintero Plutonic Complex (CPPO) corresponds to a Middle-Upper Jurassic intrusive event developed in the Coastal Rang...
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Charles R. Stern
Pág. 15 - 23
ABSTRACT. A basaltic dike and minerals within a gabbro from the ophiolitic Tortuga Complex, a portion of the mafic floor of the Late Jurassic Rocas Verdes back-arc basin in southernmost South America, have initial 87Sr/86Sr ratios of 0.70323 to 0.70429. ...
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Charles R. Stern
Pág. 15 - 23
ABSTRACT. A basaltic dike and minerals within a gabbro from the ophiolitic Tortuga Complex, a portion of the mafic floor of the Late Jurassic Rocas Verdes back-arc basin in southernmost South America, have initial 87Sr/86Sr ratios of 0.70323 to 0.70429. ...
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Hans Niemeyer
Pág. 163 - 181
RESUMEN. El complejo Igneo-Sedimentario del Cordon de Lila, de probable edad ordovicica, esta formado por 3.000 m de lavas y volcanoclastitas basicas, intermedias y acidas con intercalaciones de limolitas y grauwacas turbiditicas. Las lavas presentan un ...
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Hans Niemeyer
Pág. 163 - 181
RESUMEN. El complejo Igneo-Sedimentario del Cordon de Lila, de probable edad ordovicica, esta formado por 3.000 m de lavas y volcanoclastitas basicas, intermedias y acidas con intercalaciones de limolitas y grauwacas turbiditicas. Las lavas presentan un ...
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