what is the connection between the shapes of rock and how they travel?
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I am a petroleum engineer and i will answer u from my experience:(2 months....... ;))\n\n-Long distance of travel= More rounded and well sorted\n-short distance= more angular and less sorted\n\nTravelling agent:\n-Rivers= very small grained rocks at the end of the river...and coarser grains while approaching the begin of the river....due to settling\n\n-Wind=fine grain (Sand size) but more angular\n\n- Waves= The same effect like rivers but coarser grains at shores due to harsh environment...very fine at overseas and deep depths due to very calm water there so small particels can settle........ \n\nBye..hope that i did not forget something..and hope to contact u for overseas friendship......;)
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Probably silicone and iron.   It's a friggin big rock.   Hollow it out a bit; near the center the gravity is probably near earths gravity.
1096356
Introduction\nPlate tectonics is a relatively new theory that has revolutionized the way geologists think about the Earth. According to the theory, the surface of the Earth is broken into large plates. The size and position of these plates change over time. The edges of these plates, where they move against each other, are sites of intense geologic activity, such as earthquakes, volcanoes, and mountain building. Plate tectonics is a combination of two earlier ideas, continental drift and sea-floor spreading. Continental drift is the movement of continents over the Earth's surface and in their change in position relative to each other. Sea-floor spreading is the creation of new oceanic crust at mid-ocean ridges and movement of the crust away from the mid-ocean ridges.
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When liquid magma comes out of the earths crust at the mid-oceanic ridge, it cools rapidly forming crystals. These crystals have magnetic properties that align the crystal according to the earths magnetic field at the time they cooled, similar to how a compass needle points north, the magnetism in the crystal indicates which direction was north when the crystal was formed.\n\nHowever, the direction that is north today, was not always north in the past, in fact many times in geologic history, the north and south poles were reversed entirely. This is reflected in the "magnetic bands" found in rock on the ocean floor.\n\nSo, if you imagine the Atlantic Ocean between the U.S. and Europe, there is a mid-ocean ridge between the two. If the plates never moved, then the magma coming out of this ridge would just pile up, but instead, this is the "engine" that moves the plates away from one another. As you move from the mid-ocean ridge towards the continents, the crystals in the rock have different magnetic orientations that show these flip-flops of the earths magnetic field through geologic history. Because this material originated at the mid ocean ridge, but is now closer to the continents, it shows that the earths crust, the floor of the ocean, is moving AWAY from the mid-ocean ridge and TOWARDS the continents.\n\nThere are a lot of  diagrams that would probably help you understand this better. CHeck out a geology book, or look online.\nGood Luck!
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Slickenlines will give a direction of slip, but as you have probably thought out, that still has two possible interpretations. It isn't always easy, but there are several things you may observe that will help.\n\nSlickensides will also develop a series of small steps that show the sense of movement. These are somewhat perpendicular to the fault movement and the steps will be the trailing edge of the movement direction. \nHere is a picture, where the top (missing portion) side moved to the left. \nhttp://www.geo.cornell.edu/geology/class...\nHere are several other illustrations of these steps:\nhttp://www.geo.cornell.edu/geology/class...\n\nDrag folds will also help you determine the sense of movement. These folds are distortions of the bedding due to shearing along the fault. They are convex toward the direction of slip, with the exception of rollover anticlines along listric normal faults. To describe it another way, the shear will form a 'cup-like' pattern near the fault in the bedding, the bottom of the 'cup' will point toward the direction of movement. If on the upper side of the fault your 'cup' points downward, it should be a normal fault, and if this 'cup' points upward on the upper side of the fault, it is likely a reverse fault. \n\nUsing stratigraphic layers will often not get you much further than the slickenlines, giving you two possible directions. But, in some outcrops you can look at the topmost part of the fault and also see some evidence of the sense of movement by observing the most recent deposition or the thickness of the soil layer over the fault blocks. Where the fault blocks have been eroded away equally on both sides this may not help. \n\nIn other instances you may have to do more mapping and examine other faults in the area before you can make a conclusion. If you know the area is extensional, then you have a hypothesis to work with. The best idea is to always check as many kinds of evidence as you can find before you make a conclusion.
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Rock spines tend to be really sharp and pointy, so they probably stick in the earth really, really tight.
222018
rock formed from layered sediments that pile up and squeeze together, providing clues to the earth's past. an example is sandstone.
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Mountains are formed in the process known as plate tectonics. The earth is made of 6 major plates which are located on the earths crust. below the crust is an area known as the mantle which is lava which is very viscous. The Mantle has whats know as convection currents. these are slowly spinning sections of the mantle. Some are spinning clockwise and others counter. During mountain building there are 2 plates, one on the are of the mantle which is spinning clockwise and another on the current which is spinning counter clockwise. This allows the 2 plates to move in opposite directions which are known as divergent boundary's. Some areas however and spinning in a way to allow the plates to push together known as convergent boundaries. When this occurs you get mountains forming because the 2 plates are pushing together with a lot of force and over millions of years you get mountains rising.
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Because of the curvature of the earth.
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it is just like understanding a hyperbola. if you throw a stone in air it will feeling a force until it reaches the highest altitiude then it falls down as a projectile . the path traced by it may be in vector quantities
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Physical and Chemical weathering of rock \n\nerosion is only related to the transport of rock and sediment
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You need to think about this in terms of the question, that is what one of these processes involves movement of sediment.\n\nWeathering does involve movement of sediment, since weathering includes lots of processes that break down rocks into smaller particles or even dissolve rocks. Dissolution of limestone by carbonic acid in water is weathering that 'moves' rock. Freeze-thaw weathering of sandstone breaks the sandstone into smaller particles that are carried away by water, gravity, and wind. \n\nDeposition is the end result of the process of moving sediment, and may be the only one that does not answer your question, but because it is part of the process of 'moving' sediment it probably counts. \n\nErosion definitely moves sediment. Soil, sand, and rock are eroded by moving water and transported to new locations. \n\nAbrasion results in 'moving' sediment. Glaciers abrade underlying rock and grind it into small particles. Wind blows sand grains against rock and abrades it and reduces it to smaller particles. \n\nI think the only correct answer here is "all of the above.”
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Stratigraphic columns give the geologic history of an area. Faults & folding give a tectonic history. By examining the types of rocks that have been deposited, intruded, folded, turned over, etc. geologists have a "relative" idea (pun intended) of the workings of the earth in the past.\n\nI spend about a week teaching my 9th grade earth science students about stratigraphy. They love figuring out strat cross-sections. For them it's like doing a puzzle.
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Suppose you travel over the earth surface with an aeroplane. Traveling you never meet a boundery, because the earth has been curved.\nIn the same way our universe has been curved as well (only one dimension higher) and a lightbeam never meets a boundery (except objects as as star or a space rock). If  the intensity of the beam is strong enough, it 'circles' the universe.
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The continental plates do not actually 'drift' as you may think of an ice cube 'drifting' in water. Nor are the plates all connected together like one would view a jigsaw puzzle.\n\nThe first idea you have to realize is that the continental plates overlap each other. The 'outlines' you see that appear jigsaw-like are more often than not areas where two plates meet, and one plate is actually going under  the one next to it- this is called 'subduction'.\n\nWhich plate goes under which plate depends on the age and weight of the plates-- continental crust is lighter than oceanic plate, so more often than not it is the oceanic piece of the plate that will 'subduct'.\n\nThere are areas, however, where the plates do actually meet like a jigsaw puzzle-- these places are known as "Strike-slip" faults, where two plates slide past each other rather than 'subducting'.\n\nAs for the plates moving, that happens due to the upper mantle (the liquid part under the crust) creating convective currents-- these 'currents of mantle material' cause the plates to move and subduct (or slide past each other!)\n\nAnd yes, there are plates where continental crust and continental crust meet. What happens then? More often than not, mountains form-- The Himalayas are a prime example of this situation (the Indian plate smashed into the Asian plate).\n\nThere's more to it, but I hope this helps a little bit!
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Mountains are produced by forces in the earth that cause parts of the earth's crust to rise while others sink. Uplift of the crust, combined with chemical and physical erosion by air, water, and ice over millions of years, produces the spectacular scenery found in mountains. \n\nAt the very high temperatures and pressures found miles below the earth's surface, rocks can actually flow when density differences are produced by differential heating and cooling of parts of the mantle and lithosphere (Figure 1). The flowing of rocks in the mantle and lithosphere subjects parts of the crust to tension (pulling apart), while other parts are subjected to compression (squeezing together). Rocks are relatively weak and brittle under tension and, consequently, crust under tension tends to break up into giant blocks. Rocks are stronger under compression but when the compressive forces get very large, rocks deform by flowing, folding, and breaking.
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Applications of the concept that the present is the key to the past in the earth's history:\n1. volcanology: Today, volcanic rocks are generated at active volcanic centers--from the cooling of lava. We assume that when we map out similar rocks in older strata that they also formed at volcanic centers--even if there is no active volcanism in the area today. \n2. paleontology and paleoenvironment: We know that certain plants and animals live in the ocean and certain organisms live on land.  If we find fossils of marine organisms(like oysters, corals, ammonoids, shark teeth) in sedimentary rocks on high mountains, we interpret that the strata were originally deposited on the sea bottom that has since been uplifted.\n3. paleoenvironment: we know that modern desert areas covered by dunes have certain characteristics--that the dunes have certain types of crossbeds, the sand is well-sorted and well-rounded, for example. If we observe similar characteristics in sandstone beds of the Colorado Plateau, for example, that is considered evidence for an arid desert environment in the past.\n4. Modern plate boundaries are associated with major fault systems, certain rocks types, etc. In  the Sierra Nevada, geologists have mapped out ancient fault boundaries that put marine sedimentary rocks against dissimilar volcanic arc-related rocks. The patterns they have mapped out are considered evidence that the plate boundary of North America was once a convergent margin located farther east than it is today.