There are three main forces that drive deformation within the Earth. 4. The force, when operates face to face, is called compressional force or convergent force. Enormous slabs of lithosphere move unevenly over the planet’s spherical surface, resulting in earthquakes. Figure 10.6: There are basically 3 types of tectonic forces that can deform rocks. Learn term:tectonic forces = tensional compressional s hearing with free interactive flashcards. Mountains are not found everywhere, but in distinct linear belts (see the diagram below). Faults have no particular length scale. This chapter deals with two types of geological activity that occur because of plate tectonics: mountain building and earthquakes. The term ‘thrust fault’ is also applied to a reverse fault. Over-thrusting, where a reverse fault of a very low angle is involved, is a common phenomenon when compressional forces have been very powerful. They are common at convergent boundaries . These forces create stress, and they act to change the shape and/or volume of a material.The following diagrams show the three main types of stress: compressional, tensional, and shear. Search for: Causes and Types of Tectonic Stress. These faults are caused by horizontal compression, but they release their energy by rock displacement in a horizontal direction almost parallel to the compressional force. If you whack a hand-sample-sized piece of rock with a hammer, the cracks and breakages you make are faults. (b) Tensional forces stretch a body and pulls it apart Choose from 73 different sets of term:tectonic forces = tensional compressional s hearing flashcards on Quizlet. The type of strain (deformation) that develops in a rock depends on the tectonic force. Three Types of Tectonic Forces. COMPRESSIONAL TECTONIC FORCE • Tectonic forces that push two areas of crustal rocks together tend to shorten and thicken the crust • Bending or crumpling of rock layers • Applicable only to ductile rock layersFolding • Slippage or displacement of rocks along fractures. Thus, tensional forces create rupture, cracks, fracture and faults in the crustal parts of the earth. Compression al force causes crustal bending leading to the formation of folds or crustal warping leading to local rise or subsid­ence of crustal parts. The Bouguer gravity anomaly map of the region (Reddy & Ramakrishna, 1988) along the N–J transect is, in general, characterized by a NE-SW–trending gravity high flanked by conspicuous lows on either side all along the strike of the 700-km long … Reverse fault occurs where compressional force causes the upper block of rock to be pushed over the lower. 1. Tectonic Forces. The geological and tectonic features are well reflected in gravity and magnetic profiles along the N–J transect with good correspondence. Recognizing the accelerations affecting the Earth means finding the forces that move tectonic plates by utilizing formula F=ma, where ”F” is a force… Strike-slip fault, in geology, a fracture in the rocks of Earth’s crust in which the rock masses slip past one another parallel to the strike. Together, normal and reverse faults are called dip-slip faults, because the movement on them occurs along the dip direction -- … How do compressional mountain belts display striking visual evidence of great tectonic forces that formed them by shortening and thickening the crust? The forces creating reverse faults are compressional, pushing the sides together. Generally, the movement of the tectonic plates provides the stress, and rocks at the surface break in response to this. • Masses of rock is pushed relative to other mass of rock. 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