نتایج جستجو برای: sodic calcic and potassic alterations

تعداد نتایج: 16837401  

2010
CAROL D. FROST RONALD FROST

We recognize eight types of ferroan granitoid that can be distinguished on the basis of major element chemistry.These include alkalic granitoids that may be metaluminous or peralkaline, alkali-calcic granitoids that may be metaluminous, peraluminous or peralkaline, calc-alkalic granitoids that may be metaluminous or peraluminous, and rare calcic ferroan granitoids. These granitoids may form by ...

Journal: :Lithos 2022

A Cretaceous paleo-accretionary wedge, the Ashin Complex, now exposed along Zagros suture zone in southern Iran, exhibits mafic, metasedimentary and ultramafic lithologies. Field, geochemical petrological observations point to an anomalous high-temperature event that gave rise formation of peritectic (trondhjemitic) melts associated with restitic garnet-bearing amphibolites. Lu-Hf isotopic dati...

Journal: :Minerals 2021

The geochemistry on Holocene lavas from the Jingpohu volcanic field in NE China are compared with other Cenozoic across back-arc rift of China, order to constrain their enriched mantle sources. within comprise two separate “Crater Forest” (CF) and “Frog Pool” (FP) areas. FP have lower MgO, CaO, heavy rare earth elements higher Al2O3, Na2O, K2O, large-ion lithophile than CF lavas. Yet, both shar...

Journal: :Journal of Petrology 2021

Abstract Abundant silica-undersaturated potassic lavas are found in the centre of Turkish–Iranian plateau (NW Iran) as flows, pillows and dykes. They display abundant zoned clinopyroxene macrocrysts xenoliths igneous cumulates. We determined four types crystals (Type-I, -II, -III -IV) on basis their composition zoning patterns. Use situ compositional data, together with whole-rock major trace e...

2012
Donghe Xu Do Duc Tuyen

Salt-affected soils are generally classified into two main categories: saline and sodic (alkaline). Developing and using soybean (Glycine max (L.) Merr) cultivars with high salt tolerance is an effective way of maintaining sustainable production in areas where soybean growth is threatened by salt stress. Early classical genetics studies revealed that saline tolerance was conditioned by a single...

Fresh water source scarcity in arid and semiarid area is limitation factor for saline-sodic soil reclamation. The reusing of agricultural drainage and industrial wastewater are preferred strategies for combating with this concern. The objective of current study was evaluation in application of industrial sugar manufacture wastewater due to high soluble organic compounds in saline-sodic and sodi...

حاجی‌میرزاجان, حسین, حیدریان ‌شهری, محمدرضا, ملکزاده شفارودی, آزاده, همام, سید مسعود,

Dehzaman iron deposit is located southwest of Bardaskan, Khorasan Razavi province, and northeast of Kashmar-Kerman Tectonic Zone. Geology of the study area consists of late-Neoprotrozoic-lower Cambrian metamorphsed volcano-sedimentary units, including slate- phyllite, sericite schist, recrystallized carbonate rocks, metarhyolite-metarhyodacite and granitic intrusions. Mineralization is hosted b...

سلامی, صدیقه, تبریزی, مینا , سپاهی‌گرو, علی اصغر ,

The Alvand plutonic complex is composed of various plutonic rocks, mafic and felsic dikes (pegmatites and aplites). Pegmatites and aplites consist of quartz, feldspar, mica, tourmaline, garnet and allanite. Based on the mineralogycal compound, pegmatites can be divided into tourmaline-garnet-muscovite-bearing, aluminosilicate-bearing and tourmaline-bearing pegmatites and aplites are composed of...

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