How does the plate tectonic theory explain mountain belt formation? How important are climate and erosion in e
This looks like a cut and paste from a homework assignment. Your not going to learn anything if you get your answers from others. What a shame! glad I'm not your professor
How is the ore minerals' formation explained through the theories their genesis?
This cannot be answered in a single paragraph except to state there is not a single scientific “theory” for the formation of ore deposits. “Ores” cover any substance you can mine and from which one can extract a valuable commodity.Some ore deposits form by natural weathering at the Earth’s surface, others are the result of leaching and transport of elements leached throughout the Earth’s crust by acidic fluids (and those can have diverse origin). Some metallic ore deposits are the result of natural separation by gravity during magmatic crystallization. Others seem to be the ancient equivalent of the mid-ocean ridge black smokers.This is a topic so broad that you must focus on one type of ore, and start making inquiries from there.
How does the theory of plate tectonics explain the locations of volcanoes, earthquakes and mountain belts on Earth?
The Earth's rocky crust (both oceanic and continental) is comprised of a series of plates that float on the semi-solid or magma-like mantle. Convection currents cause the magma to rise and fall, therefore, moving the Earth's plates in different directions. This movement is responsible for mountain building, volcanoes, and earthquakes.Convergent Plates: When two continental plates converge or collide, the crust is squished together, folding and buckling and forming mountains. This is just one way mountains are formed.Subduction Plates: When one continental plate and one oceanic plate collide, the more dense oceanic plate is subducted or pushed under the continental plate. As it plunges deeper into the mantle, the rock of the oceanic crust melts, becoming part of the mantle. An ocean trench forms at the plate boundaries. Volcanoes and earthquakes may happen here. In the case of volcanoes, molten rock rises until it erupts at the surface.When two oceanic plates converge, the denser plate will subduct under the plate that is less dense .An ocean trench marks the location where the plate is pushed down into the mantleIf the two plates that meet at a convergent plate boundary both are of oceanic crust, the older, denser plate will subduct beneath the less dense plate.The features of an ocean-ocean subduction zone are the same as those of an ocean-continent subduction zone, except that the volcanic arc will be a set of islands known as an island arc.The older plate subducts into a trench, resulting in earthquakes. Melting of mantle material creates volcanoes at the subduction zone.Divergent Plates: When plates spread apart or diverge, magma rises up from the mantle and fills the gap, creating new crust. As this continues, volcanic islands may form at the surface.Transform Plates: When plates grind against and past each other in opposite directions earthquakes may strike along these boundaries.Hopefully this will help you :)
Main mineral of continental and oceanic plates?
Continental plates are lighter in density and composed mostly of granitic rock material rich in silica and aluminum. The oceanic plates are made of dense, basaltic rock composed predominately of silica and magnesium.
How does the plate tectonics theory help explain the existence of fossil marine life formed by collusion?
Um, do you probably mean collision? Because collusion is basically a secret back-channel agreement, usually illegal, to gain an unfair advantage over a competitor. But fossils in a collision? Fossils of marine life are not formed by collision. They're formed by dying on a near-shore or lacustrine environment, then rapidly covered by sediments, then, if they're lucky, turned into mineralized fossils, usually by mineral replacement by minerals carried in groundwater. The significance of collisions and marine fossils is that they can demonstrate a geologic history of an environment. For example, the European Alps very clearly show radically folded layers of sedimentary rock. In this sedimentary rock are marine fossils, all the way up to their highest point, Mont Blanc, at 4,810.9 m (15,783.8 ft) above the Mediterranean Sea! Basically, a plate collision scraped sediments off of the ocean floor, folded them over, and made a mountain range. This was a key part the allowed us geologists to reconstruct the regional geologic history. The Alps arose as a result of the collision of the African and European tectonic plates, in which the western part of the ancient Tethys Ocean, that was formerly in between these continents, disappeared. Enormous stress was exerted on sediments of the Tethys Ocean basin and its Mesozoic and early Cenozoic strata were pushed against the stable Eurasian landmass by the northward-moving African landmass. The Himalayas are very similar. There are fossils at the top of Mt. Everest, the highest point on earth, at 8,848 m (29,029 ft). They, too, are a result of a collision and uplift of marine sediments - this time between the Indian sub-continent and Eurasia. So they do not *form* by collision (or collusion), but they are important in what they tell us, because of how they got there.
What does the Mariana Trench have to do with tectonic plates?
The Mariana Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands. The trench is about 2,550 kilometres The Mariana Trench is part of the Izu-Bonin-Mariana Arc geological boundary system that forms the boundary between two tectonic plates. In this system, the western edge of one plate, the Pacific Plate, is subducted beneath the smaller Mariana Plate that lies to the west. Because the Pacific plate is the largest of all the tectonic plates on Earth, crustal material at its western edge has had a long time since formation (up to 170 million years) to compact and become very dense; hence its great height-difference relative to the higher-riding Mariana Plate, at the point where the Pacific Plate crust is subducted. This deep area is the Mariana Trench proper. The movement of these plates is also indirectly responsible for the formation of the Mariana Islands (which are caused by volcanism as a result of subduction of water trapped in minerals). At the bottom of the trench, where the plates meet, the water column above exerts a pressure of 1,086 bars (15,750 psi), over one thousand times the standard atmospheric pressure at sea level.