Geo. 101 – 1st Edition Lecture 20 Outline of Last Lecture I. Types of FoldsOutline of Current Lecture I. Geologic TourII. Energy Sourcesa. Oil and Natural GasCurrent LectureGeological Tour of the US:- Coastal Plains: sediments and sedimentary rock underlain by intrusions and metamorphic - Appalachian Mountains: metamorphic core with thrust faulting and folding- Great Plains: composed of relative horizontal sedimentary rock, except for a few locations like the Black Hills of South Dakota.o Black Hills is an elliptical dome with granite in the core (Mt. Rushmore!)- Rocky Mountains: remnants of convergent boundaries composed of folded and faulted mountains (compression)- Basin and Range: THINK: valley to mountain range to valley to mountain range (caused by extension) (stress condition: tension)o Fault Block Mountains: east side of Sierra Nevada mountains- Colorado Plateau: consists of nearly horizontal or gently tilted mountainso Grand Canyon, NVEnergy Resources:- Oil and Natural Gas:o Forms from the accumulation of organic matter (shells of organisms on the sea floor.o Sedimentation rate is high (buries organics)o Low Oxygen supply so organic matter does not decompose.o Buried sediments undergo chemical reactions from increased temperatures and pressures (MAX 130°C)These 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.o Organics converted to liquid and gaseous compounds of hydrogen and carbon (hydrocarbons)o Low density of oil and gas allow them to migrate through permeable rocks.o Oil and gas can be “trapped” under certain geological conditions.o Low permeability rocks prevent oil from escaping at the earth’s
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