Geology
Do you ever wonder why one river is straight and flows quickly while another meanders along curves and seems to be slow and peaceful, or how the mountains were formed? Geology is the study of the earth, its materials, and the processes acting upon them. It includes the study of rocks and minerals; and their formation, weathering, and metamorphosis. So, when you need an answer to a question about rivers, mountains, volcanoes, rock cycles, plate tectonics, or other geological aspects, our Geology category is the place to ask it.
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Not necessarily. Although some sedimentary rock is composed of microscopic particles, some is composed of cemented boulder size...
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Small ones.
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I don't know for a fact if they are or not, but the Valley of Fire in Nevada are about the same to me. There is a place in the...
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Granite is different both in composition and formation. In addition, granite typically has much larger crystals than basalt. ...
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Evidence of life in the Precambrian Super-Eon are very rare.The earliest evidence comes from the Paleoarchean Era, 3.5 billion...
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The reason why is because in geology, things tend to get named by the area where they are first recognized and described, or...
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Yes, sand dunes are loose sand carried and deposited by wind from one place to another.
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Any sedimentary rock, including limestone, shale, sandstone, mudstone, ironstone, and slate.
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The rocks get eroded away by the sea, and then, after a lot of eroding a hole is formed in the rock, which is called a cave....
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This is known as a suspension.
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Quartz is a mineral, silicon dioxide, not a type of rock.Quartz is a constituent of many rocks, eg. granite, which is composed...
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Tectonic plates are either oceanic crust and/or continental crust and the upper solid layer of the mantle. The continental crust...
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Granitic magma is higher in silica than basaltic magma.
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yes
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Either •Precambrian Time •eras •periods •years
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a red giant :D
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No. The largest monolith in the world is commonly thought to be Uluru, or Ayers Rock. However, Uluru is only the world's...
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Relative dating. Paleostratigraphy correlates layers of rock using index fossils found within them.
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Extrusive igneous rock is formed at or near the surface from the solidification of lava. Intrusive igneous rock is formed below...
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Plate Tectonics Theory
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It is called erosion
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you cant
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The processes would be mechanical and chemical weathering.
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Minerals differ from each other in many ways. A few are: hardness, color, density, chemistry, crystallography, fluorescence,...
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the pendulum
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The deepest layers are the oldest, so the further down you go, the older they get.
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It's state gem is the diamond and its state mineral is the quartz crystal.
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No. Oceanic crust is of a higher density than continental crust and therefore is heavier.
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Most glaciers melt back during the summer and advance over the winter so you need to check the location today and come back in a...
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because the sun powers it up to move around
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Sedimentary rock is home to fossil fuels like coal and oil.
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The flat faces of a piece of shale could be quite smooth, but the broken edges can be quite rough.
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The Snoopy Rock of Sedona, Arizona, is composed of striking red sandstone, weathered into a rough shape of a reclining Snoopy.
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Igneous rocks like basalt are formed from volcanic lava.
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There are 3 main types of rocks, but they are divided into hundreds of different categories, and I'm not sure anybody's ever...
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A geophysicist may say that the earth has only one layer which is liquid, the outer core. However a hydrologist may also include...
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Once it seeps into an aquifer.
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The major differences between quartz and calcite are hardness and cleavage. Quartz is about twice as hard as calcite. Quartz has...
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Geosphere: The geosphere includ all the multed and solid rocks it is made up of the earth's solid crust.
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Undisturbed seafloor sediments will carry a history of what has transpired there, much like glacial ice or peat bogs. Some...
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Gneiss, I believe, is a metamorphic rock. Isn't that the one with the bands on it??
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Amethyst is a gemstone, a variety of violet Quartz with the chemical formula is SiO2.Because it has a hardness of seven on the...
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we live on the earths crust. it is the outer most layer of earth. the core is the inner most layer with temperatures from 90,000...
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Earth's mantle is a rocky shell about 2,890 km (1,800 mi) thick that constitutes about 84 percent of Earth's volume. Two main...
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The core of the Earth cannot be determined in depth unless you are talking about the outer core. In that case, the outer core is...
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The Middle Jurassic Epoch (175.6 - 161.2Ma) was in the Jurassic Period (199.6 - 145.5Ma).
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As a grain increases in size it's settling velocity increases. The velocity of a settling grain in a fluid is controlled by a...
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It's the outer core!
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Mauna Loa and Mauna Kea on the island of Hawaii are a couple of examples.
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Sedimentary rocks layers.
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The Mohs hardness scale is basically a scale used for determining how hard a mineral. More specifically the scale measures the...
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Sand that has been melted by lightning is called fulgurite.
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Erosion of igneous and metamorphic rock
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This depends on the soil! Cohesionless coarse grained soils with high gravel contents may have high hydraulic conductivity on...
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Igneous rocks form from volcanic eruptions, such as basalt and pumice.
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the constant movement of water and pressure onto the rocks causes the weathering
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The Paleozoic, the Mesozoic and the Cenozoic are all divided into periods and epochs.
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The roots of many plants can penetrate the smallest openings. They will enter minute cracks in rocks and when they grow, split...
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earthquakes are a result of plate movement
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Uranium is a chemical element; uranium is found in approx. 200 minerals. A mineral is not an element (withe some exceptions,...
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a mountain
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A tectonic boundary where two oceanic lithospheric plates are either moving away from one another and new crust is formed, or...
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1. To wear as jewelry. 2. To sponsor wars.Choose responsibly. There are Conflict Free diamonds - certified by Kimberley or lab...
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It is the most common rock in the crust of the Earth, as most of the ocean floor is composed of it. Basalt is an extrusive...
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All sedimentary rocks form near the earth surface. E.g. Evaporites (notice the spelling here: "-ites"), limestone, dolostone,...
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seismogram are the records or paper copies that are produced by seismographs used to calculate the location and magnitude of an...
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Yes. Proximity to a heat source can be enough to cause metamorphism of rock.
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Limestone is naturally alkali. When rain reacts with natural elements in the atmosphere such as nitrogen and sulphur dioxide it...
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Decorative natural stone cut from solid rock
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No. The asthenosphere is within the earth and so by definition cannot include the water contained on the surface or in the...
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Yes, it continues to expand, but, very, very slowly. Do NOT think in terms of years, lifetimes or generations. This geological...
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The erosion process speeds up. It causes soil erosion and top rich soil is washed away
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The river spreads and becomes shallower and the flow velocity decreases meaning that it has less energy and so is unable to...
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No. A tectonic plate is a segment of the rigid rocky outer shell of the Earth composed of the crust and the brittle uppermost...
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Rocks are normally made of combinations of minerals.
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When the majority of its constituents become melted then cool and solidify.
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No. They can also occur on continents.
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(hint: what properties does sio2 have because of its structure)
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Diamonds and gold are probably some of the most expensive minerals based on jewelry and such. The greater the composition of Co2...
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This will form a clastic sedimentary rock. If it is predominantly composed of sand sized grains then it will form a Sandstone.
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it is difficult to find information on this, but it may have been around 1902 or earlier. This was the year when a group of...
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The largest layer of earth is the mantle.
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