Results 81 to 90 of about 5,043 (208)
Authigenic grey monazite from Ordovician metasediments of the Iberian massif: the Matamulas placer
Mineralium DepositaAbstract Authigenic nodular monazite occurs in dark, Middle Ordovician, low-grade metapelites of the Central Iberian and West Asturian-Leonese Zones of the Iberian Massif. Erosion of monazite-bearing slates and phyllites, and short-range transport resulted in localised recent alluvial deposits rich in millimetre ...
S. García de Madinabeitia +8 more
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Geochemistry, mineral chemistry and P-T evaluation of metasediments of Bahram-Gur complex, ES Sanandaj-Sirjan zone, Iran [PDF]
, 2019 The Bahram-Gur area in the southeastern part of the Sanandaj–Sirjan metamorphic zone, contains metabasites and metasediments. The metasedimentary rocks are mainly garnet schists and garnet-staurolite schists that were metamorphosed under amphibolite ...
Nakashima, Kazu +2 more
core +1 more source
Uranium-bearing metasediment and granite in the Tasermiut area, South Greenland
Rapport Grønlands Geologiske Undersøgelse, 1981 Regional exploration for uranium was carried out in South Greenland in 1979 and 1980. From the planning stage the area between the fjords Tasermiut and Søndre Sermilik (fig. 16) was considered a favourable target beeause uranium deposits from geological environments of similar age, strueture and lithology are known, e.g.
B.L Nielsen, T Tukiainen
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Strontium isotopes are consistent with low‐elevation foraging limits for Henst's goshawk
Wildlife Society Bulletin, 2017 Apex predators play critical roles in the ecosystems they inhabit. Unfortunately, little is known about movement patterns for many species. This information is critical for evaluating vulnerability to habitat loss and the adequacy of existing or proposed
Brooke E. Crowley +4 more
doaj +1 more source
Journal of Applied Sciences and Environmental ManagementDeformation histories aid in remodeling the forces related to rock formation. Hence, the objectiveof this paper as to examine the deformational history of the Basement Complex rocks in Okomita, Ojirami and Environs, South Western Nigeria using ...
A. Ogbamikhumi +2 more
doaj
The Addition of Felsic Sediments to the Lower Continental Crust During the Variscan Orogeny
Geochemistry, Geophysics, GeosystemsLower crustal metasedimentary xenoliths (garnet‐sillimanite granulites) from the Bournac breccia pipe in the Massif Central, France, provide a robust example of sediments transported to depth and incorporated into stable lower continental crust during a ...
M. F. Ringwood +2 more
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U–Pb zircon provenance of Moldanubian metasediments in the Bohemian Massif
, 2016 Detrital zircon U–Pb age data from the Moldanubian part of the Bohemian Massif obtained by laser ablation inductively coupled plasma mass spectrometry show variations between the lithotectonic units and point to their formation in ...
Jiří Konopásek (2842301) +3 more
core +1 more source
Gold, iron and manganese in central Amapá, Brazil
Brazilian Journal of Geology: Greenstone belts with deposits of gold, iron and manganese are common in the Paleoproterozoic Maroni-Itacaiunas Tectonic Province of the Guiana Shield. In Brazil, in the State of Amapá and northwest of Pará, they are represented by the Vila Nova Group,
Wilson Scarpelli, Élio Hiromi Horikava
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Volcanogenic CO2 Degassing in the Songliao Continental Rift System, NE China
Geofluids, 2019 The Wudalianchi monogenetic volcanic field (WMVF) is located in the Songliao basin within a major continental rift system in NE China. Bubbling springs and diffuse degassing from soils are typical features of the WMVF.
Wenbin Zhao +6 more
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Exhalative metasediments ? clues to the real nature of regional metamorphic processes?
Mineralogy and Petrology, 2004 Regional metamorphic petrogenetic theory is currently dominated by the hypothesis that the principal grade indicator silicates and their related minerals arise by a variety of chemical reactions. It is postulated that, with rise (or fall) in regional crustal temperature and pressure, original materials become destabilized, break down, and are dissolved
openaire +1 more source