Geology

A:

Granite has a coarse to very coarse grained texture. It is typically granular and can be porphyritic with well-shaped large crystals of feldspar. Its structure contains cavities wherein well-formed crystals project.

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  • Does sand dissolve in water?

    Q: Does sand dissolve in water?

    A: Sand does not dissolve in water. Sand is mostly made of fine quartz, which does not dissolve in water. Sand does dissolve in certain hot acids.
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  • What causes chemical weathering?

    Q: What causes chemical weathering?

    A: Chemical weathering is the process by which a material breaks down into its component elements through the action of a chemical agent. This type of weathering requires precise temperature conditions and the presence of a chemically-laden fluid. Substances capable of causing chemical weathering include water and acids.
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  • What are metamorphic rocks used for?

    Q: What are metamorphic rocks used for?

    A: Metamorphic rocks are used for roofing material, decorative gardening stone, the base for snooker tables, building material, sculpture material and paving material. Metamorphic rocks come in three different types: slate, marble and schist.
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  • What is the difference between a hill and a mountain?

    Q: What is the difference between a hill and a mountain?

    A: Many geologists classify a landform as a mountain if it is at least 300 meters or more above its surrounding topography. Mountains have steep sloping sides, rounded or sharp ridges, and a peak or summit. Hills are not as high or steep, but they do typically have an obvious summit.
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  • What is the outer core?

    Q: What is the outer core?

    A: The outer core is part of the core, which is one of the three major layers of the Earth. The core is the deepest and hottest layer and is mostly composed of metals, and it is beneath the Earth's mantle. The outer core is the first layer of the core, and it extends to a depth of approximately 2,890 kilometers below the Earth's crust and measures 2,300 kilometers thick.
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  • How do you turn copper green?

    Q: How do you turn copper green?

    A: To turn copper green, create a verdigris paina by rubbing the metal with a vinegar and salt solution. Before you begin, gather some steel wool, a bowl, paper towels, dish soap, baking soda and a finishing wax or lacquer.
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  • What rock is formed when magma cools at the Earth's surface?

    Q: What rock is formed when magma cools at the Earth's surface?

    A: The specific type of rock that forms when magma cools at the Earth's surface is extrusive igneous rock. Igneous rock forms when magma cools, but where the magma cools determines the type of igneous rock that forms. Igneous rock gets its name from the Greek word for fire and is so called due to the extremely hot liquid from which the rocks originate.
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  • How is an isthmus formed?

    Q: How is an isthmus formed?

    A: Isthmuses, which are narrow strips of land connecting two land masses and separating two bodies of water, are formed in various ways, depending on the geology of the areas in which they occur. These geological changes to form isthmuses may involve the movement of tectonic plates, the drowning of landmass due to fault structures, volcanic activity, and the movement of waves and tides.
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  • How deep is Lake Huron?

    Q: How deep is Lake Huron?

    A: The average depth of Lake Huron is approximately 195 feet, but its deepest point reaches 750 feet below the surface. This massive body of water is located between Michigan and Canada, stretching 206 miles long and 183 miles wide.
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  • What is the importance of rocks?

    Q: What is the importance of rocks?

    A: Rocks have a broad range of uses that makes them significantly important to human life. For instance, rocks are used in construction, for manufacturing substances and making medicine and for the production of gas. Rocks are also extremely vital to scientists as they provide clues about the Earth’s history.
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  • How is sandstone formed?

    Q: How is sandstone formed?

    A: Sandstone forms over the course of centuries, as deposits of sand accumulate in rivers, lakes or on the ocean floor, and the sand blends with calcite or quarts and then undergoes compression. After enough time goes by, the pressure pushes all of these elements together to create sandstone. Because not all sand is identical but instead comes in a variety of colors and grain textures, each formation has a unique appearance.
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  • What is the texture of granite?

    Q: What is the texture of granite?

    A: Granite has a coarse to very coarse grained texture. It is typically granular and can be porphyritic with well-shaped large crystals of feldspar. Its structure contains cavities wherein well-formed crystals project.
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  • What is absolute dating?

    Q: What is absolute dating?

    A: Absolute dating is a method of determining the specific date of a paleontological or archaeological artifact or location based on a specific time scale or calendar. Scientists base absolute dating on measurable physical or chemical changes or on written records of events.
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  • Why is a diamond so hard?

    Q: Why is a diamond so hard?

    A: The molecular structure of a diamond makes it hard, as diamonds are comprised of carbon atoms linked closely together in a lattice structure. The atoms are linked tightly via covalent bonds wherein two atoms share an electron. A tetrahedral unit is composed of five carbon atoms, with one carbon atom sharing electrons with the other four. An extremely strong molecule is formed from the tetrahedral bonding of five carbon atoms.
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  • How do fossil fuels form?

    Q: How do fossil fuels form?

    A: Fossil fuels are formed the gradual accumulation of organic remains on the sea floor. As the accumulation rate increases, the organic remains are subjected to heat and pressure, which leads to fossil-fuel formation.
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  • What is the hardest mineral in the world?

    Q: What is the hardest mineral in the world?

    A: The hardest natural mineral in the world is lonsdaleite, a rare mineral made of carbon atoms. This mineral can withstand up to 58 percent more stress than diamond, according to a report by Jessica Griggs of NewScientist.
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  • What are the five characteristics of a mineral?

    Q: What are the five characteristics of a mineral?

    A: Minerals are solid, naturally occurring, inorganic compounds that possess an orderly internal structure and a regular chemical composition. A mineral species has to possess these five characteristics to be regarded as scientifically valid.
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  • Where can you find geodes?

    Q: Where can you find geodes?

    A: Geodes are mostly found in deserts, volcanic ash beds and areas with limestone throughout the world. In the United States, common geode sites include Arizona, California, Iowa, Nevada and Utah. The most abundant geode sites in California are Riverside and Imperial counties.
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  • How do you tell if something is real crystal?

    Q: How do you tell if something is real crystal?

    A: While it's often necessary for an expert to examine the item, crystal can be distinguished by its ability to cast rainbow colors when held up to the light. Real crystal also contains lead, so it is heavier than glass and reverberates a distinct ringing sound when struck.
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  • Where are mountains found?

    Q: Where are mountains found?

    A: Mountains are found on every continent in the world. Though there are some single-standing mountains, they are most often found in groups known as mountain ranges. Some mountains arise from volcanic eruptions, while others have been formed by the shifting of tectonic plates. Thus, mountains are commonly seen at the intersection of tectonic plates and in places where the Earth's crust is relatively thin.
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  • What is a mineral resource?

    Q: What is a mineral resource?

    A: A mineral resource is the concentration of materials that are of economic interest in or on the crust of the Earth. Almost all minerals found on Earth are used in one way or another for economic benefit. Examples of minerals include gold, gravel, sand, aluminum, copper, limestone, clay and diamond.
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