Three Types of Tectonic Forces. 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 … Learn term:tectonic forces = tensional compressional s hearing with free interactive flashcards. Tectonic Forces. 4. 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. 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. This chapter deals with two types of geological activity that occur because of plate tectonics: mountain building and earthquakes. Search for: Causes and Types of Tectonic Stress. (a) Compressive forces squeeze and shorten a body. Over-thrusting, where a reverse fault of a very low angle is involved, is a common phenomenon when compressional forces have been very powerful. 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. 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. Thus, tensional forces create rupture, cracks, fracture and faults in the crustal parts of the earth. 1. Compression al force causes crustal bending leading to the formation of folds or crustal warping leading to local rise or subsid­ence of crustal parts. Generally, the movement of the tectonic plates provides the stress, and rocks at the surface break in response to this. (b) Tensional forces stretch a body and pulls it apart Recognizing the accelerations affecting the Earth means finding the forces that move tectonic plates by utilizing formula F=ma, where ”F” is a force… Figure 10.6: There are basically 3 types of tectonic forces that can deform rocks. If you whack a hand-sample-sized piece of rock with a hammer, the cracks and breakages you make are faults. Choose from 73 different sets of term:tectonic forces = tensional compressional s hearing flashcards on Quizlet. The geological and tectonic features are well reflected in gravity and magnetic profiles along the N–J transect with good correspondence. 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. The term ‘thrust fault’ is also applied to a reverse fault. 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. Mountains are not found everywhere, but in distinct linear belts (see the diagram below). • Masses of rock is pushed relative to other mass of rock. Together, normal and reverse faults are called dip-slip faults, because the movement on them occurs along the dip direction -- … There are three main forces that drive deformation within the Earth. The type of strain (deformation) that develops in a rock depends on the tectonic force. Reverse fault occurs where compressional force causes the upper block of rock to be pushed over the lower. They are common at convergent boundaries . Faults have no particular length scale. Chapter deals with two types of tectonic forces that drive deformation within the Earth surface break in to... 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