What are mounds of loose sands?
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For more information and pictures, Click on the link below.
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Yes, I went a couple of times, to check out the mounds.  The mounds are quite interesting, but because of their magnitude, it's best to have a map with you so that you can figure out where you are.\n\nI'd like to go again soon.
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I think you mean rock fragments. If yes,\n\nRock fragments are further eroded by forces of nature: wind or water. depending on the level of disintegration, it forms various kinds of soil or sand.\n\nSometimes if fragments get buried under several layers of soil, fragments clump together to form sedimentary rocks\n\nHope that helps\n\nR
181468
They could *be* shark teeth. There are plenty of places where you can pick them up right off the sand if you know where and how to look for them.
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There rarely exists a "hollow area."  The oil occupies tiny voids within the (sand?) strata and often collects in usable amounts in domes and folds capped by impervious rock.  After the oil is extracted the land above often settles as the voids compact.
137400
plate boundries?  \n\nMountains, volcanos, earthquakes, vents, hot springs.
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sandwhiches= sand witches
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Scree is one word that describes a pile of loose rock, but it isn't specific to rock at the base of a mountain. \n\nA much better anwer would be "alluvial fan". This is the specific name given to rock that slides down off of mountains and forms wedge shaped piles at the base.
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Here is the boring wikipedia answer, there is another specific answer for California beach sand at the end:\n\nSand is an example of a class of materials called granular matter. Sand is a naturally occurring, finely divided rock, comprising particles or granules ranging in size from 0.0625 (or 1/16) to 2 millimeters. An individual particle in this range size is termed a sand grain. The next smaller size class in geology is silt: particles below 0.0625 mm down to 0.004 mm in size. The next larger size class above sand is gravel, with particles ranging from 2 mm up to 64 mm (see grain size for standards in use). Sand feels gritty when rubbed between your fingers (silt feels like flour).\n\n\nThe most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide), usually in the form of quartz which because of its chemical inertness and considerable hardness is quite resistant to weathering. However, the composition of sand varies according to local rock sources and conditions. The bright white sands found in tropical and subtropical coastal settings are ground-up limestone. Arkose is a sand or sandstone with considerable feldspar content which is derived from the weathering and erosion of a usually nearby granite. Some locations have sands that contain magnetite, chlorite, glauconite, or gypsum. Sands rich in magnetite are dark to black in color, as are sands derived from volcanic basalts. The chlorite-glauconite bearing sands are typically green in color, as are sands derived from basalts (lavas) with a high olivine content. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their bright, white color. Sand deposits in some areas contain garnets and other resistant minerals, including some small gemstones.\n\nHere's another specific answer for California:\n\nBeaches vary in color according to the mineral content of the sand, which is also a clue to the origin to the eroded sediments that make up the sand supply. eroded shale cliffs create the charcoal gray beach sand at Shelter Cove in Humboldt County. North of Humboldt Bay, the coarse sands of Agate Beach are multicolored agates that have been ground and polished by the surf. Ground quartz and feldspar mineral make up the white beaches of Carmel, while a few miles to the north in Sand City, amber colored sand indicates the presence of iron mineral. Close inspection reveals that white sand beaches are mosaic of pale quartz grains, pink green or white feldspar and fleck o black mica.
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it would resemble the texture of sand... not smooth or silky.
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I think that what you are asking about might be better called coastal deposition.\n\nOver the span of geologic time the sea level has changed dramatically. As the sea level has moved up and down over time the coastal erosion process has created continental shelves that are covered in deposits eroded from dry land around some continents. This process has also helped shape the coastlines of the continents. \n\nOne of the more spectacular examples of coastal deposition are river deltas. The sediment carried by the river is deposited as the flow of river water slows. This tends to sort the sediments according to the energy level of the water that is flowing into the open ocean. First larger grains like gravel and pebbles settle down, and as the river slows, sand, and finally clay size particles settle out of the water. Many river deltas have built up sediment deposits that are several miles thick and cover areas as large as some states. Most of southern Louisiana is a river delta deposit. \n\nAlong many coasts there is a predominant wind direction that helps to build coast long-shore currents. These currents move parallel to the coastline and will cause sediment accumulations (from rivers) such as sand bars and islands to slowly migrate in one direction. Much of the sand on beaches is actually slowly migrating along the shore. As heavier winter waves move the sand offshore, the sand also tends to move along the shore and sometimes temporarily moves back up onto the beach at a new location. \n\nAnother geologic process that is involved in coastal change is both uplift and subsidence. Uplift is taking place on some coasts due to tectonic plate motion. Other coasts are subsiding, or sinking, due to both faulting and slow compaction of underlying sediments. This sort of subsidence is taking place along the Gulf Coast of the US where there are large growth faults that parallel the coast that are sinking towards the Gulf. Sediment deposited thousands and millions of years ago is still settling in some areas and this leads to loss of coastal wetlands and rising local sea level. \n\nIn other areas coastlines are being changed by local erosion of uplifted sediments (e.g. California). Landslides carry hillsides down to the coastline. Another change in many coastlines is being caused by a geologic process called isostacy. As glaciers accumulated across North America during the last ice age, they weighed down that part of the earth's crust and caused it to sink into the asthenosphere. The glaciers melted long ago, but the areas that were covered by glaciers are still rising. This creates a sort of teeter-totter effect, where some coastlines like parts of the East Coast of the US and the Louisiana coast are sinking. \n\nInformation on isostatic rebound:\nhttp://www.homepage.montana.edu/~geol445/hyperglac/isostasy1/\n\nMississippi River Delta:\nhttp://www.lacoast.gov/geography/basins/mr/\n\nExplanation of long shore drift:\nhttp://www.cofc.edu/CGOInquiry/longshoredrift.htm\n\nGood explanation of barrier islands:\nhttp://www3.csc.noaa.gov/beachnourishment/html/geo/barrier.htm\n\nA very good illustration of differential erosion in a coastal setting:\nhttp://www.rgs.edu.sg/events/geotrip/stack.html\n\nUN Coastal Types:\nhttp://www.oceansatlas.com/servlet/CDSServlet?status=ND0yNzYwJmN0bl9pbmZvX3ZpZXdfc2l6ZT1jdG5faW5mb192aWV3X2Z1bGwmNj1lbiYzMz0qJjM3PWtvcw~~
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Mudslides(flows can be helped and are caused from \nlack of plants,roots ,brush,trees ect on the sides of hills.With the escavation and creation of new\nhousing ect and for the clean hillside look.The\nimportance of the undergrowth of grass ,trees ect \nhave been depleted and not replaced.They have \nprograms for beaches and hillsides,even in foreign\ncountries that realise the importance of root and plant systems in hillside lands.The winding and \nweb patterned root systems of these plants,trees\nacts like a "net" and the plants themselves and erosion barrier.
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umm....the pyramids of giza???..they are old and not naturally formed...
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Round Mound of Rebound.
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flickr is quite good for this sort of thing, \n\nhttp://www.flickr.com/search/?q=beach+white+sand
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sand, it can be pretty gross if the beach is not cleaned up
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Hmm...Sound like you are talking about Cahokia mounds.  Small hills built by the Cahokia Indians, believed to be for burial purposes.  \n\nNow here is the tricky part...there is a town in the area named Cahokia...but the mounds are not there.  The mounds are in Fairmont City.