Question 1 .1 out of 1 points Why might the era we live in today one day be called the "Anthropocene"? Selected Answer: Because humans are causing significant changes to the planet. Correct Answer: Because humans are causing significant changes to the planet. . Question 2 .0 out of 1 points Suppose an electric-generating power plant is about to be built near your house. The local government has not decided whether to allow coal‚ nuclear‚ or oil as fuel for the plant (natural
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mostly solid silicate rock * Lithosphere is the uppermost layer (100km thick) * Asthenosphere is the layer below the lithosphere (100km -660km) * Crust is thin silicate rock material on top 3. Pangaea is the proposed supercontinent that 200 million years ago supposedly began to shift apart and form our present continents. Alfred Wegener proposed this theory along with continental drift; Evidence he used includes matching fossils‚ rock types‚ and ancient climates
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millions of years causing “significant change”. Uniformitarianism is a basic foundation of modern geology. Age of the Earth Estimated age for the Earth and the rest of the solar system is about 4.55 billion years. The oldest Earth rocks: 3.8 to 3.9 billion years Oldest Earth minerals (zircons): 4.2 billion years Oldest Moon rocks: 4.44 billion years Early Earth Timeline •About 5.5-6 billion years ago (BYA)‚ the solar nebula begins to collapse •About 4.6 BYA‚ Sun begins fusion •About 4.5-4.56 BYA‚ Proto-Earth formed from planetesimals
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Solar System and Earth; planetary geology of our Solar System and other solar systems. The structure of the Earth‚ including: geological evolution of the Earth; plate tectonics and the structure of the Earth’s crust; minerals and igneous‚ sedimentary and metamorphic rocks and their formation processes; formation and evolution of life on Earth. Geohazards (earthquakes‚ volcanic eruptions‚ landslides and avalanches‚ and meteorite impacts) and modern day changes to the Earth’s atmosphere and environment
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above sea level its elevation is 5‚112 feet and around 1‚267 feet above the north-flowing Belle Fourche River. Sedimentary‚ igneous‚ and erosional processes led to the formation of Devils Tower National Monument. First‚ sedimentary rocks in layers‚ which are nearly two miles thick‚ were deposited. About 500 million years ago‚ most of the layers were deposited in shallow seas. Igneous activity then created the tower until erosional processes exposed it. The Black Hills region‚ which is an elliptical dome
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sediment. Would a rock formed from cemented particles of volcanic ash be igneous or sedimentary? Can you think of other circumstances that might form rocks that are intermediate between two of the major rock families? The rock would be igneous‚ igneous rocks are formed from the solidification of molten rocks. Rocks can be formed in numerous ways a few examples are erosion and earth quakes. I think that metamorphic rocks are the perfect example for combining all the three different rocks together because
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Manmade; Water: NO – liquid state‚ only a solid material can be considered a mineral – in it’s naturally occurring ice state it is a solid and therefore a mineral; Wood: NO – organic‚ living material. How are rocks different from minerals: rock is lithified aggregate of a mineral. Rocks may contain multiple minerals as well as organic matter whereas minerals are a singular substance. ATOM: Electrons‚ Protons & Neutrons: Pro & neu heavier particles in the nucleus. Elec are tiny lightweight particles
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------------------------------------------------- Rock (geology) In geology‚ a rock is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example‚ the common rock‚ granite‚ is a combination of the quartz‚ feldspar and biotite minerals. The Earth’s outer solid layer‚ the lithosphere‚ is made of rock. Rocks have been used by mankind throughout history. From the Stone Age rocks have been used for tools. The minerals and metals we find in rocks have been essential to human civilization
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K-Feldspar‚ also known as Potassium Feldspar or orthoclase‚ is the most common rock-forming mineral. It covers up about 60% of the Earth’s crust (Feldspar). Feldspar crystalizes from magma which is found in both extrusive and intrusive igneous rocks as well as metamorphic rocks (wisconsingeologicalsurvey.org). They form at medium to high temperature and at certain depths. They may also be found in some sedimentary rocks. This mineral is widespread and can mostly be found throughout North Carolina
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Batholith: A large emplacement of igneous plutonic rock‚ formed by magma cooling deep in the Earth’s crust. Buoyant magma pushes up through the country rock‚ partially melting it‚ and then cools. A good example is the Cornubian batholith in south-west England‚ which has broken through the surface to form the well-known granite structures of Dartmoor and Bodmin moor‚ among others. Sill: A tabular sheet intrusion where magma has intruded between older layers of sedimentary rock‚ beds of volcanic lava or
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