The pressure–temperature (P–T) evolution of a deformed garnet-bearing granite La Virgen hill, located 25 km south the town Azul, Argentina, was studied as an example slightly peraluminous and granites widespread in Paleoproterozoic Tandilia Belt Rio de la Plata Craton. An early isobaric magmatic–submagmatic cooling path followed by exhumation derived appraisal microstructures, chemical composit...

The mantle rocks from Kadaboura and Madara areas represent sections of dismembered ophiolitic complexes developed during the Neoproterozoic in Eastern Desert Egypt, which is located northwestern corner Arabian–Nubian Shield. comprise serpentinites serpentinized dunites, whereas those consist pyroxenites.Despite serpentinization studied rocks, few relicts primary chromite, olivine pyroxene are p...

Abstract The Dinaric–Hellenic mountain belt bends where two fault systems transect the orogen: (1) dextral Shkoder-Peja Transfer Zone (SPTZ), active sometime between Late Cretaceous and middle Eocene; (2) Normal Fault (SPNF), which accommodated NW–SE directed orogen-parallel extension. SPTZ dextrally offsets nappes by ~ 75 km, a displacement attributed to reactivation of an Early Mesozoic rift ...

The deposits of the pyroclastic density currents from the August 2006 eruption of Tungurahua show three facies associations depending on the topographic setting: the massive, proximal cross-stratified, and distal cross-stratified facies. (1) The massive facies is confined to valleys on the slopes of the volcano. It contains clasts of >1 m diameter to fine ash material, is massive, and interpret...

Abs~'act Lower Proterozoic stromatolites and associated clastic carbonate deposits of the Campbell Group, flom the southern margin (Prieska area) of the Kaapvaal Craton, northern Cape Province, are described. Contrary to previous interpretations (Beukes, 1978; 1980a) shallow subtidal to suprafidal facies a r e recognised and discussed in regional context. An alternative model for the facies dev...

In order to determine the source and critical areas of wind Erosion, Sistan Plain, IRIFR-E.A method was applied. According to geomorphological investigations, the studied area consists of the following two main units namely: Pediment with 1 type and 8 geomorphological facies, and playa with 2 types of flatland and desert type that includes 9 geomorphological facies. On the basis of sediment, th...

The Infra Krol Formation and overlying Krol Group constitute a thick (< 2 km), carbonate-rich succession of terminal Proterozoic age that crops out in a series of doubly plunging synclines in the Lesser Himalaya of northern India. The rocks include 18 carbonate and siliciclastic facies, which are grouped into eight facies associations: (1) deep subtidal; (2) shallow subtidal; (3) sand shoal; (4...

Triassic and Jurassic carbonates across the Middle East host large amounts of hydrocarbons, but the degree of sedimentary heterogeneity across different scales in carbonates varies significantly. In this study we investigate the regional evolution of a carbonate ramp across the Late Triassic to Early Jurassic on the Musandam Peninsula (UAE and Oman) in a series of wadis, 45 km apart. Lithostrat...

[1] ODP/IODP Hole 1256D penetrates an in situ section of ocean crust formed at the East Pacific Rise, through lavas and sheeted dikes and ∼100 m into plutonic rocks. We use mineralogy, oxygen isotopes, and fluid inclusions to understand hydrothermal processes. The lavas are slightly altered at low temperatures (<150°C) to phyllosilicates and iron oxyhydroxides, with a stepwise increase in grade...