Geol 1040 1st Edition Lecture 6Outline of Last Lecture IX. Early Ideas on Earth’s Interiora. Heavily influenced by the Mediterraneanb. Dark ages 400-1000c. Athanasius Kircherd. 1724 Nebular Hypothesise. Ridgety of EarthOutline of Current Lecture X. Upper 200Km of Earth a. Crustb. MantleXI. Lithospherec. Made up ofd. Makes up plates in the plate tectonics theory XII. Difference in Cruste. Thickness and density affects crustXIII. Process and energy on Earthf. Effects on Earth’s surfaceg. Water cycles XIV.What can happen to a rockh. Weatheringi. Erosion and TransportThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.j. Depositionk. Burial and Lithificationsl. Deformation and Metamorphismm. Meltingn. Solidificationo. UplifCurrent LectureX. Upper 200Km of Earth a. Crusti. Oceanic Crustii. Continental Crustb. Mantlei. Upper Mantle1. Known as Lithospheric mantle2. Strongii. Lower Mantle1. Known as Asthenospherea. Is very weakb. Does not take much to move itXI. Lithospherea. Made up ofi. Crust ii. lithospheric mantleb. Makes up plates in the plate tectonics theory XII. Difference in Crusta. Thickness and density affects crusti. Continental crust thicker and but less dense1. This is why it is higher in elevationii. Oceanic crust is thinner but more dense1. This means its heavier and is lowerXIII. Process and energy on Eartha. Effects on Earth’s surfacei. Climateii. Gravityiii. Wateriv. Electromagnetic solar energyb. Water cycles i. Precipitation1. Weathers rocks/ erodes rocksii. Glaciers melt1. Dragging materials with it and scraping rocksiii. Moving water1. Breaks apart rocksiv. Oceans1. Waves erode shore linesv. Evaporation1. Puts water back into the air2. Starts cycle overXIV.What can happen to a rocka. Weatheringi. Sunlight, rain, wind, plants, and animals interact with the surfaceii. Breaks rocks downiii. Creates sedimentsb. Erosion and Transporti. Rocks loosened by weathering can be stripped away by erosionii. Then can be moved away from their sourceiii. Glaciers, flowing water, wind, and gravity on hillslopes can transport eroded materialsc. Depositioni. Happens when transportation energy decreases sufficientlyii. Sediments reside within or next to channelsiii. Only moved when transportation energy is higher1. i.e. sediments are deposited d. Burial and Lithificationsi. Once deposited, sediments can be buriedii. Then compacted by the weight of overlying materialiii. Natural cements bind adjacent grainsiv. Process of sediment turning into rock is lithificatione. Deformation and Metamorphismi. Strong forces can squeeze rock and fold its layers, called deformationii. If buried deeply, rock can be heated and deformed to create a metamorphic rock.f. Meltingi. Rock exposed to high temps may melt ii. Produces magmaiii. Occurs at great depth, in lower crust or mantleg. Solidificationi. Magma cools by being pushed deeper down or afer being erupted, it solidifies in a process called solidificationii. This is where crystallization might happenh. Uplifi. A rock might be uplifed back to the surface1. Is then susceptible to weathering once again a. starting the process overii. Commonly occurs in mountainsiii. Can also occur in broad regions 1. Not as
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