نتایج جستجو برای: mafic dykes

تعداد نتایج: 2656  

Journal: :Rapport Grønlands Geologiske Undersøgelse 1966

Journal: :Sustainability 2021

Dykes, or levees, are structures designed and constructed to keep the water in a river within certain bounds event of flood. In relation with climate change, more frequent floods, higher intensity, can be expected due anthropogenic emissions greenhouse gases into atmosphere. The objective this review paper is address many ways which geosynthetics contribute sustainable construction dykes thus s...

ترکیان, اشرف,

The study area is located in the southern part of Qorveh granitoid complex. Investigation of textural and mineral chemistry evidence in granitoid host with composition of granodiorite, granite, qtz-monzonite, and mafic microgranular enclave (MME) with composition of qtz-diorite to meladiorite, are focused in this paper. Microscopic study and data of microprobe analyses in host and enclave rocks...

Journal: :زمین شناسی اقتصادی 0
مریم آهنکوب احمد جهانگیری محسن مؤید

misho intrusions outcrop in the southern part of north tabriz fault, east misho mountains, nw tabriz. filed studies, petrological and geochemical data show that both mafic and felsic rock types occur in the area. mafic rocks include gabbro consisting of plagioclase, clinopyroxene, olivine and opaque minerals and felsic bodies consist of alkali granite with k-feldspar, quartz, plagioclase and a ...

Journal: :journal of sciences islamic republic of iran 0

mineral paragenesis of rodingitized basic rocks of iranian ophiolites are presented and metasomatic reactions between ca+2 bearing aqueous fluids issued during serpentinization of host ultramafic rock – with magmatic minerals of basic rocks leading to present paragenesis of rodingites are discussed. it is concluded that ca+2 rich aqueous fluid in equilibrium with serpentinite has high ca+2 chem...

2003
R. JONK D. DURANTI A. E. FALLICK

Injected sandstones occurring in the Kimmeridgian of NE Scotland along the bounding Great Glen and Helmsdale faults formed when basinal fluids moved upward along the fault zones, fluidizing Oxfordian sands encountered at shallow depth and injecting them into overlying Kimmeridgian strata. The orientation of dykes, in addition to coeval faults and fractures, was controlled by a stress state rela...

2015
T. K. Goswami

In the upper Subansiri District of Arunachal Pradesh, India, Higher Himalayan Crystallines are exposed in and around Taliha and the outcrop of MCT in the immediate south of Taliha is recognizable with the development of tourmaline bearing leucogranite dykes representing melting of the crustal rocks. The gneisses of the Taliha area consist of mainly quartz, mica, K-feldspar and garnet. The Quart...

2009
Glen E. Mellor Rebecca M. Goulter Raymond Chia Gary A. Dykes

* Corresponding author 16 Dr. Gary A. Dykes 17 Food Science Australia 18 PO Box 3312 19 Tingalpa DC, Queensland, 4173, Australia 20 Phone: +61 7 3214 2037 21 Fax: +61 7 3214 2150 22 Email: [email protected] 23 AC CE P ED Copyright © 2009, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved. Appl. Environ. Microbiol. doi:10.1128/AEM.02232-08 AEM Accept...

1999
Roberto F. Weinberg

This paper reviews the literature on dyking as a mechanism of felsic magma extraction from a source and transport to shallower crustal levels, and review the recent literature suggesting a range of alternative mechanisms of magma migration in hot crustal zones which produce mesoscale pervasive granite sheet intrusions. Recent papers have strongly favoured dyking as the main mechanism controllin...

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