نتایج جستجو برای: eurasia plate boundaries and kopeh

تعداد نتایج: 16850019  

Journal: :Geochemistry, Geophysics, Geosystems 2003

حسن‌پور, عبداله, برقی, محمدعلی, کنعانیان, علی ,

In this paper, a new method for mineral boundary detection is proposed using a model prepared in ArcGIS ModelBuilder tool. Required data for this method are gray scale images taken from petrographic thin sections. The images are captured in 19 numbers through 90° polarizers and lambda plate rotation with 5° intervals while the microscope table is fixed. Mineral boundaries are detected using the...

Journal: :Bulletin De La Societe Geologique De France 2021

The present-day tectonic setting of the Western Mediterranean region, from Pyrénées to Betics and Alps Atlas, results a complex 3-D geodynamic evolution involving interactions between Africa, Eurasia Iberia plates asthenospheric mantle dynamics underneath. In this paper, we review main events recorded in region since Early Cretaceous discuss respective effects far-field near-field contributions...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

Journal: :Geophysical Journal International 2021

Summary We estimate India-Somalia plate motion at 45 times since 60 Ma from ?9,000 crossings of Carlsberg and northern Central Indian Ridge magnetic reversals C1 to C26 numerous fracture zone crossings. The new rotations reveal least seven significant spreading rate changes ?60 Ma, some previously unknown. largest occurred before 46 when the forces acting on India evolved rapidly due transition...

2002
SHUNSUKE OTANI

The concept of plate tectonics is generally accepted in earth science and seismology. The surface of the earth is divided into rigid tectonic plates that move on the earth surface at extremely slow speed. The islands of Japan sit on the North American and Eurasian plates. The Pacific plate moves westward and the Philippines plate moves to northwest direction; both plates sink under the islands ...

2008
Robert J Stern Peter R Johnson

The Arabian plate has been converging with Eurasia for 20-30 Ma, currently at 2-3 cm/year. Convergence is manifested differently along strike, with collision and tectonic escape in the west (Anatolia) and subduction of Arabia beneath Eurasia in the east (Iran). The reason for these differences may reflect the greater density of the Arabian lithosphere in the east relative to that in the west. F...

2011
Zhihe Jin

This work investigates transient heat conduction in a functionally graded plate (FGM plate) subjected to gradual cooling/heating at its boundaries. The thermal properties of the FGM are assumed to be continuous and piecewise differentiable functions of the coordinate in the plate thickness direction. A linear ramp function describes the cooling/heating rates at the plate boundaries. A multi-lay...

Friction stir welding (FSW) was conducted on AISI 304 austenitic stainless steel plate with 2 mm thickness. The FSW was performed at a welding and rotational speeds of 50 mm/min and 400 rpm, respectively. Microstructure observations by the optical microscopy showed that a severe grain refinement occurred in the stir zone (SZ). Electron backscattered diffraction analysis (EBSD) results indicated...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید