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9.475  Articles
1 of 949 pages  |  10  records  |  more records»
Regionally, the study area is located in the Ophiolite Belt of East Sulawesi, particularly in the Tomata Formation (Tmpt), and is composed of igneous rock distribution in the Ultramafic Complex (Ku). The exposed of ultramafic rocks, caused the study area ... see more

Clay assemblages in Holocene sediment on southeast Mediterranean margins are generally smectite-rich and, in the past, were derived primarily from direct River Nile input to the sea. Depositional patterns in the Nile littoral cell are now undergoing exten... see more

This study identifies clay mineral assemblages between the eastern Nile delta and northern Israel to complement and refine interpretations of modern sediment provenance and dispersal patterns in the SE Mediterranean. Previous petrological investigations i... see more

Clay minerals serve as petrological markers that can he used to measure and interpret ongoing changes in River Nile sedimentation, now largely affected by anthropogenic influences. Closure in 1964 of the High Dam at Aswan, in particular, has entrained mar... see more

In the El Volcán and Rodeo de los Bueyes areas, Andean Principal Cordillera (east of Santiago; 33º50'S), an Upper Oligocene-Lower Miocene volcanic series belonging to the Abanico Formation (Late Eocene-Early Miocene) is exposed. The rock successions outcr... see more

ABSTRACT. Stratigraphic sequences of Lower Cretaceous age occur in two belts along central Chile. Between 30° and 35°S, the western belt, situated in the Coast Range is composed of 7-14 km thick intra-arc and forearc sequences dominated by shoshonitic to ... see more

The Navilawa caldera is the remnant of a shoshonitic volcano on Viti Levu, Fiji, and sits adjacent to the low-sulfidation Tuvatu epithermal Au–Te deposit. The caldera occurs along the Viti Levu lineament, approximately 50 km SW of the Tavua caldera,... see more

In the contact metamorphic aureole of the Duluth Complex, Cu-Ni-PGE mineralization occurs locally up to 100 m from the intrusion-footwall contact (Spruce Road area), whereas elsewhere (Dunka Pit deposit) the footwall granite and metapelite (Serpentine dep... see more

This article discusses the stages of crystallization of the Eocene trachybasalt-tra- chyandesitebasalt-phonolith formation of the Talysh zone. Determination of the composi- tion of the primary magma, evolution and melting fraction of the initial melt of t... see more

1 of 949 pages  |  10  records  |  more records»