نتایج جستجو برای: morb
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مجموعه سنگ های افیولیتی زمین درز سیستان بخشی از بر جای مانده های لیتوسفر اقیانوسی تتیس در حد فاصل بلوک های قاره ای لوت و افغان است. این حوضه اقیانوسی حداقل در زمان کرتاسه حیات داشته است. شواهد ژئوشیمیایی کانی های مجموعه سنگ های اولترامافیک-مافیک توالی پوسته ای و روابط میکروسکوپی کانی ها در بخشی از این مجموعه های افیولیتی (در حد فاصل افیولیت های جنوب بیرجند تا چهل کوره) بیانگر جایگاه های متفاوت ...
• Record of adakitic high-Mg# magmatism along Hunter Ridge and Kadavu Island. records limited contribution from subducted sediments. Sr-Nd-Pb arc rocks record the melting subducting South Fiji MORB crust. This slab-melt component is also recorded in common (non-adakitic) rocks. Dehydration serpentinites leads to flux-melting unaltered MORB. The mostly submarine Ridge, located SW Pacific a ∼12 M...
Abstract Brown amphibole is a minor but common mineral component in lower oceanic crust. It generally interpreted as products of migrating SiO2 and H2O-rich fluids or melts, which can be either residual melts from advanced magmatic differentiation Mid-Ocean Ridge Basalt (MORB), hydrothermal including seawater component. Within the crust exhumed at Atlantis Bank Oceanic Core Complex, along ultra...
The broad belt of intraplate volcanism in the East Atlantic between 25 and 37 N is proposed to have formed by two adjacent hotspot tracks (the Madeira and Canary tracks) that possess systematically different isotopic signatures reflecting different mantle source compositions. To test this model, Hf isotope ratios from volcanic rocks from all individual islands and all major seamounts are presen...
[1] Two fore‐arc magmatic belts exist in Kodiak Island, the granitic Kodiak batholith and the basaltic trenchward belt. Both are part of the 2100 km long Sanak‐Baranof belt, interpreted to result from trench‐ridge‐trench (T‐R‐T) triple‐junction migration. In this hypothesis, trenchward belt basaltic rocks formed as the spreading ridge first entered the accretionary prism, and the larger Kodiak ...
The metamorphic sole rocks at the base of mantle peridotites from the Mersin ophiolite consist of amphibolites and metasedimentary lithologies. Mineral parageneses in the metamorphic sole rocks exhibit amphibolite and greenschist facies assemblages. Geothermobarometric studies based on mineral assemblages and chemical compositions of minerals indicate that average metamorphic temperature during...
Abst rac t -Large parts of the Central Eastern Desert of Egypt consist of Neoproterozoic nappes of ophiolite and island-arc volcanic rocks. Beneath these nappes metamorphic basement domes are exposed in tectonic w indows such as the Meatiq basement. The mineral and whole rock chemistry of amphibol i tes included in the teconical ly lowermost granitoid gneiss, within the metasedimentary cover of...
NDM-positive Salmonella sp. strain identified in the United States. Antimicrob Agents Chemother. 2011;55:5957–8. http://dx.doi.org/10.1128/AAC.05719-11 5. Centers for Disease Control and Prevention. Carbapenem-resistant Enterobacteriaceae containing New Delhi metallo-βlactamase in two patientsRhode Island, March 2012. MMWR Morb Mortal Wkly Rep. 2012;61:446–8. 6. Centers for Disease Control and...
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