Course Hero Logo

Chapter 13 Lecture Notes - Karina Orozco Chapter 13 Notes...

Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. This preview shows page 1 - 2 out of 2 pages.

Karina OrozcoChapter 13 NotesTest 3 – Nov 17th Essay question on Geology of Texas OR pick a recently active fault anddescribe its tectonic setting, type of deformation, history, earthquakes, etc.Divergent Boundaries: Origin and Evolution of the Ocean FloorAnatomy of the oceanic ridge~ Oceanic ridge characteristics-Axis of some ridge segments exhibit deep down-faulted structures called rift valleys-Concept formulated in the early 1960s by Harry HessOrigin of oceanic lithosphere~ Seafloor spreading-As plates move apart, magma wells up into the newly created fractures and generatesnew slivers of oceanic lithosphere-New lithosphere moves from the ridge crest in a conveyor-belt fashion-Zones of active rifting are 20 to 30 km wide~Why are oceanic ridges elevated?-Primary reason is because newly created oceanic lithosphere is hot and occupies morevolume than cooler rocks-As the basaltic crust travels away from the ridge crest it is cooled by seawater-

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 2 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
RAPPENGLüCK
Tags
Geology, Plate Tectonics, Red Sea, Rift Valley, oceanic lithosphere, east african rift, rift valleys

Newly uploaded documents

Show More

Newly uploaded documents

Show More

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture