نتایج جستجو برای: red sea oceanic spreading
تعداد نتایج: 317395 فیلتر نتایج به سال:
Abstract The crustal and tectonic structure of the Red Sea especially maximum northward extent (ultra)slow spreading centre has been debated—mainly due to a lack detailed data. Here, we use compilation earthquake vertical gravity gradient data together with high-resolution bathymetry show that ocean is occurring throughout entire basin similar in style at other mid-ocean ridges globally, only o...
The Mid-Cayman spreading centre is an ultraslow-spreading ridge in the Caribbean Sea. Its extreme depth and geographic isolation from other mid-ocean ridges offer insights into the effects of pressure on hydrothermal venting, and the biogeography of vent fauna. Here we report the discovery of two hydrothermal vent fields on the Mid-Cayman spreading centre. The Von Damm Vent Field is located on ...
Chaldoran area in NW of Iran has Mesozoic oceanic crust basement. The studied rocks of this region can be divided into three groups: ophiolitic gabbros and pillow lavas, ophiolitic volcanoclastics and Eocene lava flows. Ophiolitic mafic rocks show continental volcanic arc natures and Eocene lava flow shows OIB-like nature. During the Mesozoic,the Chaldoran region was situated in the active cont...
chaldoran area in nw of iran has mesozoic oceanic crust basement. the studied rocks of this region can be divided into three groups: ophiolitic gabbros and pillow lavas, ophiolitic volcanoclastics and eocene lava flows. ophiolitic mafic rocks show continental volcanic arc natures and eocene lava flow shows oib-like nature. during the mesozoic,the chaldoran region was situated in the active cont...
This work employs high-resolution 3D thermomechanical numerical models of the incipient oceanic spreading to investigate nucleation and long-term evolution of ridge-transform spreading patterns. The Eulerian–Lagrangian visco-plastic model allows for large strains and accounts for plate cooling by both heat conduction and hydrothermal circulation as well as for partial melting of the asthenosphe...
Global topography, bathymetry, magnetic, and gravity data were analyzed to study the nature of Red Sea crust infer its tectonic regime. The is a classic example incipient ocean basin formation after breakup continent. We used spectral analysis magnetic two-dimensional (2D) forward modelling image crustal sources within Sea. also determine Curie point depth, which was then estimate heat flow val...
منطقه دره پهن در 221 کیلومتری جنوب غربی شهرستان کرمان و 55 کیلومتری جنوب شرقی شهرستان بافت قرار دارد. مجموعه افیولیتی منطقه از نظر زمین شناسی کلیه خصوصیات یک ملانژ افیولیتی را دارا می باشد. این مجموعه شامل سنگهای فوق بازی عمدتا هارزبورژیت های تکتونیزه بوده که سرپانتینی شده و زمینه اصلی منطقه را تشکیل می دهند و همچنین پیروکسنیت از دیگر سنگهای فوق بازی منطقه می باشد. ازمهمترین سنگهای بازی از گابر...
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