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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.

500 Questions

What mineral contains oxygen and silicon is soft and shiny and separates easily into sheets?

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Biotite is one of the mica group of silicate minerals.

Why doesn't the earth fly into space?

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The Sun's gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. Earth, however, like the tetherball, is traveling forward at a high rate of speed, which balances the gravitational effect. This means that the planet neither flies out into space nor falls into the Sun.

Perfect free from anything impure?

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I have every idea about that

Which family of elements are called basis of life?

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Carbon, Hydrogen, Oxygen, Nitrogen.

They can form the four moleccules Carbon dioxide(CO2), Water(H2O), Methane(CH4) and Ammonia(NH3). These four molecules are the 'brick' that build to make life.

Why do sedimentary rocks have stripes?

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Make a salad sandwich cut it in half and split it now look along the cut edge and you should see the same effect.

It's just a stack of different materials on top of each other seen from the side or leading edge of the stack.

In what order do deposition weathering and erosion occur?

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first the weathering happens which causes an erosion which makes deposition.

What are the characteristics of basic lava?

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Basic lava comes from shield volcanoes, Basic lava is runny and flows faster.

What are the 8 most common elements in the earths crust?

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The eight most common elements in the Earth's crust are as follows (with percentages):

  • Oxygen (O) 46.6%
  • Silicon (Si) 27.7%
  • Aluminum (Al) 8.1%
  • Iron (Fe) 5.0%
  • Calcium (Ca) 3.6%
  • Sodium (Na) 2.8%
  • Potassium (K) 2.6%
  • Magnesium (Mg) 2.1%

What is the difference between flood and erosion?

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A flood is an event where water moves onto an area of land where there isn't normally water. Erosion is the process by which rock fragments are carried away to other locations. Floods can causes erosion, but they don't always, nor are the necessary.

A mineral that contains a large amount of one or more metal compounds is called?

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A mineral that contains a significant quantity of one or more metal compounds is known as an "ore." Ores are valuable natural resources as they provide a concentrated source of specific metals, making their extraction and processing economically viable. These metal-bearing minerals undergo mining and beneficiation processes to extract and refine the desired metals. Common examples of ores include bauxite (aluminum ore), hematite (iron ore), and chalcopyrite (copper ore). The extraction of metals from ores plays a crucial role in various industries, contributing to the production of metals essential for manufacturing, construction, and technological application

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What is a tear drop formation formed by a mineral?

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A tear drop formation formed by a mineral is often referred to as a "teardrop inclusion" or "teardrop crystal." This unique formation occurs when a mineral encapsulates a droplet of another mineral during its crystallization process. The droplet may have a different composition or color than the surrounding crystal. This phenomenon is particularly common in minerals like quartz.

Teardrop inclusions can create captivating visual effects, adding aesthetic appeal to the crystal. The trapped droplet may appear as a distinct, often teardrop-shaped, inclusion within the larger crystal. These formations are of interest to mineral collectors and enthusiasts due to their beauty and the geological processes that lead to their creation.

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How is an orthophoto map different from a topographic map?

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An orthophosphate map is black and white while the toptgraphical map is in colour.

What type of fault is created by shear stress?

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Can slate turn into another metamorphic rock?

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Yes, slate, which is a fine-grained metamorphic rock formed from the metamorphism of shale, can further undergo metamorphism to transform into another metamorphic rock. The process of changing one metamorphic rock into another is known as metamorphic progression or metamorphic differentiation.

If slate undergoes increased heat and pressure over time, it can undergo further metamorphism and transform into a different type of metamorphic rock. The specific type of rock it may transform into depends on the intensity of the metamorphic conditions. For example, if the temperature and pressure increase significantly, slate might progress to phyllite, schist, and eventually, if conditions are extreme, it could transform into gneiss.

Metamorphic rocks form through the alteration of existing rocks (igneous, sedimentary, or other metamorphic rocks) due to heat, pressure, or chemically reactive fluids over geological time. The process of metamorphism involves changes in mineral composition, texture, and structure.

Ridges of land where a river winds?

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River Banks, or 'Levees'.

What countries are part of the mid ocean ridge?

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Since it is called the 'mid ocean ridge' , it is in the middle of the ocean, far from land/countries.

However, with one exception, Iceland. The mid Atlantic ocean ridge continues above the surface of the ocean, and has formed the island of Iceland.

Is limestone a silicate mineral?

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No. Dolomite is formed by the replacement of Calcium in the mineral calcite by Magnesium, giving the chemical formula (Ca,Mg)CaCO3. Rocks formed largely of calcite are called limestones, and those which show extensive Magnesium substitution in calcite are called Dolomitic limestones.

A rock that contains a metal or economically useful mineral is called a?

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This is a raw material (feedstock).

What is CaCO3 known as other than limestone?

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CaCO3 is calcium carbonate.

Its other mineral names are calcite, chalk, and marble.

What rocks can Granite change into?

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Granite, or any other rock for that matter, can become metamorphic, sedimentary, or igneous at any time. If the granite is weathered and eroded by wind, water, etc. and the lithified (cemented), it becomes a sedimentary rock. If it melts within the Earth under extreme temperatures and then cools to a solid state, it is an igneous rock. Likewise, if the granite is exposed to extreme temperature and pressure, it can change back into a metamorphic rock. Like I said, these same processes hold true for any rock or mineral in what is known as the Rock Cycle.

How can an igneous or metamorphic rock change into a sedimentary rock?

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A sedimentary rock can change from that to a metamorphic rock then into an Igneous rock. e.g. Mudstone (sedimentary) is in the Zone of Diagenesis, when it is subjected to regional metamorphism (in mountain belts) it changes from a mudstone to a slate (low grade) then to a Phillite (medium grade) then a Schist (medium) then a gneiss (high grade) then into a Milonite (high grade) then once past the line of partial melting it has so much pressure and so much temperature that it turns into an Igneos rock. This is the basic explanation of this. If you want to know more, just ask me.
Sedimentary rocks are changed into metamorphic by being buried deep enough that the heat and pressure alter their text, mineralogy, or other characteristics.