نتایج جستجو برای: forumad ophiolite

تعداد نتایج: 1055  

2007
RON HARRIS

Analysis of spatial, temporal, geological and geochemical patterns of ophiolites in the Indonesian and New Guinea region indicates a strong correlation with marginal basin development and closure. The spatial distribution of ophiolites is mostly linked with marginal basin producing zones of oblique convergence and collision. Strain partitioning in these zones creates a series of ephemeral plate...

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, ...

احمدی, محمود, ترابی, قدرت, شریفی, مرتضی,

The Anarak ophiolite, with E-W trending, located at north of Anarak. In addition to the gabbros in Anarak ophiolite sequence, intrusion of metasomatized gabbros injected into the ophiolite of Anarak in the form of stocks and dykes. metasomatized gabbros are younger than Anarak ophiolite and older than Anarak metamorphic assemblage and contain diopside, augite, actinolitic hornblende, actinolite...

حاجی علی‌اوغلی, رباب, سودی اجیرلو, مجید, موذن, محسن,

The Kamyaran ophiolite complex as a part of the Kermanshah ophiolite is located in western Iran, along the Zagros orogeny and Neotethys suture zone. The Kamyaran ophiolite complex includes serpentinized harzburgites, isotropic and layered gabbros, diabasic dykes and pillow basalts. The diabasic dykes have experienced upper green schist facies metamorphism. Based on mineral chemistry of the diab...

خادمی , ابراهیم, شهاب پور, جمشید,

The north - cast Arsanjan ophiolite complex is part of the Neyriz ophiolite complex located 24 km north - east of Arsanjan in the south - eastern part of the Zagros range . In I :250,000 geologic map of Shiraz, this complex has been conside red as an ultramalic t:umplcx, however, it is principally represented by serpentinized harzburgite and dunile, basalt, metadolerite, spilite, limeston...

2013
Jacques Bourgois

Gravimetric and geologic data show that the reactivation of the Neogene Interandean depression and/or the ~75 65 Ma ophiolite suture into the modern dynamic of the Andes controlled the Gulf of Guayaquil Tumbes basin (GGTB) location and evolution during the past 1.8 1.6 Myr at least. Depending on whether the remobilization occurred along the interandean depression or the ophiolite suture, the GG...

2013
Xian-Hua Li Michel Faure Wei Lin Gianreto Manatschal

The Chenaillet Ophiolite is one of the best-preserved remnants of the Piemont-Liguria oceanic basin, a branch of the Central Atlantic that opened during the separation of Adria/Africa from Europe. Despite numerous studies of structure, petrology, geochemistry and isotope geochronology, the timing and genesis of various magmatic rocks within the Chenaillet Ophiolite are still controversial. We p...

2017
Kaitlin R. Rempfert Hannah M. Miller Nicolas Bompard Daniel Nothaft Juerg M. Matter Peter Kelemen Noah Fierer Alexis S. Templeton

Microbial abundance and diversity in deep subsurface environments is dependent upon the availability of energy and carbon. However, supplies of oxidants and reductants capable of sustaining life within mafic and ultramafic continental aquifers undergoing low-temperature water-rock reaction are relatively unknown. We conducted an extensive analysis of the geochemistry and microbial communities r...

Journal: :Anais Da Academia Brasileira De Ciencias 2021

Age delimitation integrated with aeromagnetometric and aerogammaspectrometric survey advances the understanding of ophiolite evolution in Brasiliano Orogen. We focused on Bossoroca ophiolite, because oceanic crustal mantle rocks contain zircon metasomatic chloritite. A metadiorite a metavolcanoclastic rock were also studied to delimit relationship between island-arc infrastructure superstructur...

Journal: :Journal of Geography (Chigaku Zasshi) 1989

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