Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Publication
- Publication Type
Articles 1 - 2 of 2
Full-Text Articles in Geology
History, Geology And Water In The Lower Platte River Valley In Eastern Nebraska, Dave Gosselin, Marv Carlson, Matt Joeckel
History, Geology And Water In The Lower Platte River Valley In Eastern Nebraska, Dave Gosselin, Marv Carlson, Matt Joeckel
Conservation and Survey Division
No abstract provided.
Quaternary Geology And Landscape Evolution Of Eastern Grand Canyon, Arizona, Matt D. Anders
Quaternary Geology And Landscape Evolution Of Eastern Grand Canyon, Arizona, Matt D. Anders
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Tectonics and drainage evolution are controlling overall landscape incision in eastern Grand Canyon. Superimposed on downcutting are dynamic responses of hillslopes, tributary streams, and the Colorado River to glacial-interglacial climate cycles. Five tributary stream fill terraces have been identified, and luminescence dating indicates aggradation was occurring 50- 34 ka {S3), 12-7 ka (S2), and 5-3.5 ka (S1). Seven Colorado River fill terraces have been identified, and luminescence and U-series dating indicate deposition was occurring 343-322 ka (M5), 151-118 ka (M4), and 71-64 ka (M3).
Aggradation by the Colorado River in eastern Grand Canyon begins during glacial advances and continues into …