نتایج جستجو برای: back arc

تعداد نتایج: 191272  

2004
ALISON M. SHAW DAVID R. HILTON COLIN G. MACPHERSON JOHN M. SINTON

We report new stepped heating He, Ar, CO2 and water data on a petrogenetically diverse suite of lavas from the Manus back-arc basin, where a plume component has previously been identified. The aim of this study is to evaluate the superimposed effects of degassing and contamination in order to identify mantle source characteristics. CO2 abundances and carbon isotopes in both the vesicle ([CO2] u...

Journal: :Boletín Geológico 2022

This work presents a considerable volume of new and compiled data indicating that arc magmatism in the western paleomargin Gondwana began Carboniferous continued during Permian Early Triassic. Subsequently, reactivated Middle Jurassic due to subduction Farallon Plate under continental paleomargin. The pluton belts are distributed from edge toward interior continent same orientation as slab (wes...

Journal: :Solid Earth 2021

Abstract. Back-arc extension superimposed on mountain belts leads to distributed normal faults and shear zones interacting with magma emplacement within the crust. The composition of granitic magmas emplaced at this stage often involves a large component crustal melting. Miocene Aegean granitoids were in metamorphic core complexes (MCCs) below crustal-scale low-angle ductile zones. Intrusion pr...

پیروج, هادی, عامری, علی, عبادی حاجی علیلو, بهاره, کمالی, امین اله ,

The study area is located in the central part of the Siahrood geological map, Kharvanagh of Ahar town, in the East Azerbaijan Province. The volcanic rocks of the Kharvanagh area include trachybasalt, trachy-andesi-basalt and trachy-andesite. The main minerals in the rocks are plagioclase, pyroxene, olivine and hornblende and the main textures are microlitic-porphyry. At the contact between the ...

2012
G. D. Webb S. Cirovic Douglas Bader

Approximately 5000 new referrals are received every year in the UK for limb amputations [1]. Lower back pain is reported in as high as 52 94% of lower limb amputees, from [2]. Following discharge patients do not receive regular reviews by physiotherapists and often adopt a variety of habitual gait patterns that can lead to back pain. Circumduction is a one such pattern which is thought to contr...

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