Geo. 101 – 1st Edition Lecture 4 Outline of Last Lecture I. Plate Tectonic TheoryII. Plate Boundariesa. DivergentOutline of Current Lecture I. Plate Boundariesa. ConvergentII. Examples of earthly boundariesCurrent LectureWhat causes tectonic plates to move?- Convection at Divergent boundaries Ridge Pull- Subduction at Convergent boundaries Slab PullConvergent Boundaries:- A region where two tectonic plates or fragments of the lithosphere move toward one another and collide.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.- 3 types of Convergent boundaries:1. Continental – Oceanic Convergencea. Includes a deep sea trench (the contact spot), the subduction zone (the flux-melting), and an accretionary prism (scraped sediments)b. EX: Cascade Mtns., Andes Mtns., Aleutian Islands2. Oceanic – Oceanic Convergencea. EX: Japan, Philippines3. Continental – Continental Convergencea. No subduction zones, no volcanoesb. EX: Active – Himalayas Mtns.; Ancient – Appalachian Mtns. *Orogeny: A mountain building
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