Abstract/Details

Criterion approach to transverse drainages


2005 2005

Other formats: Order a copy

Abstract (summary)

Streams that incise across bedrock highlands such as anticlines, upwarps, cuestas, or horsts are termed transverse drainages. Their relevance today involves such diverse matters as highway and dam construction decisions, location of wildlife corridors, better-informed sediment budgets, and detailed studies into developmental histories of late Cenozoic landscapes. This dissertation outlines a new criterion-based approach to understanding transverse drainage incision. Individual characteristics and field evidence for each of the four known mechanisms to explain transverse drainages are catalogued from the literature and personal experience. The mechanisms include antecedence, superimposition, overflow, and piracy.

Analogue modeling efforts on a large stream table test the criteria's replicability. The experiments corroborate and add to the criteria for antecedence, overflow, and piracy. The stream table modeling failed to test superimposition. The updated criteria are then used to isolate the mechanism responsible for twenty randomly selected transverse drainages in the southwestern U.S.A. The breakdown for the twenty sites revealed eight overflow, seven superimposition, four antecedence, and one piracy. Individual proposed mechanisms at each site were classified on an ordinal scale of confidence and resulted in the following levels of confidence: five very low, five low, five moderate, three high, and two very high. Fifty percent of the studied sites received a rating of low or below, indicating substantial further work is required to improve our understanding of some transverse drainages. The required tests or fieldwork necessary to increase the ratings for each site stem easily from a criterion-based approach, and are outlined in this dissertation.

A regional examination of southwestern transverse drainages permits a tentative generalization of drainage development vis à vis the dominant extensional tectonic regime. The overall picture that emerges from this study is: (a) rivers that predate and persist through tectonic activity generate antecedent drainages; (b) high stream order drainages develop following tectonic activity and extend in a downstream direction through ponding and overflow, reestablishing through-flowing fluvial systems; and (c) the base-level lowering associated with overflow causes incision and the evacuation of accumulated fill deposits, often leading to the development of superimposed drainages in the breached basin.

Indexing (details)


Subject
Geography
Classification
0368: Geography
Identifier / keyword
Earth sciences; Drainages; Incised streams
Title
Criterion approach to transverse drainages
Author
Douglass, John Christian
Number of pages
275
Publication year
2005
Degree date
2005
School code
0010
Source
DAI-B 66/10, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780542335112, 0542335115
Advisor
Dorn, Ron
University/institution
Arizona State University
University location
United States -- Arizona
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3189819
ProQuest document ID
305025420
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305025420
Access the complete full text

You can get the full text of this document if it is part of your institution's ProQuest subscription.

Try one of the following:

  • Connect to ProQuest through your library network and search for the document from there.
  • Request the document from your library.
  • Go to the ProQuest login page and enter a ProQuest or My Research username / password.