نتایج جستجو برای: ophiolitic complex
تعداد نتایج: 784080 فیلتر نتایج به سال:
In order to know the characteristics of rainforest developed over Sierra de Cristal and northeastern part Moaˈs highlands objective was study theese phytocoenosis by using Braun Blanquet method. One alliance two associations besides their physiognomical, ecological phytosociological are described which is too important for analyze latter use community property.
this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...
M. P. Searle's recent paper in the Journal of Structural Geology (Searle 1986) included a major departure from published structural interpretations of the Ladakh Himalaya. The geologic history of Ladakh is a vital key to understanding the timing and sequence of events during the Himalayan orogeny. Ophiolitic rocks and island arc volcanics along the Indus Suture zone (Frank et al. 1977, and many...
Abstract. Recognition of a new angular unconformity and the synthesis detrital zircon U–Pb (U–Th) / He provenance records, including double dating, from NW Zagros region elucidate basin dynamics foreland wedge-top intermontane units, as well tectonic processes in source terranes response to different geodynamic phases. In this contribution, we present field observations data hinterland basins r...
Heavy metal concentration in the soils and sediments has increased worldwide during the last century due to the mining, smelting, and industrial activities. The Forumad chromite deposit is located in the Sabzevar ophiolitic complex (SOC), with a long history of mining activities, yet very little is known about the heavy metal contamination in its surrounding environment. In this research work, ...
The Bandan chromite mine is the main chromite deposit in Sistan suture zone, eastrn Iran. The chromite deposits are structurally tabular to lens-shaped bodies hosted by dunitic to harzburgitic mantle peridotites. Similar to Alpine type podiform chromites, chromitite pods are enclosed within dunitic envelops. The chromites show mainly massive to disseminated and also brecciated textures. Chemica...
The Mashhad ophiolitic and metamorphic complex was intruded by Mashhad granitoids during different episodes of magmatisms. Dehnow pluton with diorite-granodiorite composition was intruded at earliest stage of magmatism during Late Triassic (Norian, 215± 4My). This pluton is cut by the NW-SE trending ductile shear zones which are dominated by an intense ductile deformation. The rocks of Dehnow p...
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