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Rifts as denudation-accumulation systems : concept, models and examples

Hinderer, Matthias and Einsele, G. (2002):
Rifts as denudation-accumulation systems : concept, models and examples.
In: Sedimentation in Continental Rifts, pp. 83-96, Tulsa, Okla., SEPM, ISBN 1-56576-082-4,
DOI: 10.2110/pec.02.73.0083,
[Book Section]

Item Type: Book Section
Erschienen: 2002
Creators: Hinderer, Matthias and Einsele, G.
Title: Rifts as denudation-accumulation systems : concept, models and examples
Language: English
Title of Book: Sedimentation in Continental Rifts
Number: 73
Place of Publication: Tulsa, Okla.
Publisher: SEPM
ISBN: 1-56576-082-4
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Applied Sedimentary Geology
Date Deposited: 17 Jun 2015 06:53
DOI: 10.2110/pec.02.73.0083
Additional Information:

eISBN 9781565761957
License: [undefiniert]
Alternative Abstract:
Alternative abstract Language
We present simplistic quantitative models of rift basin filling, applying the concept of denudation-accumulation systems. Initial rifts are commonly oversupplied and develop a fluvial sedimentary environment because of a high morphometric ratio and high denudation rates due to high relief. During an advanced stage of riftevolution, an increasing morphometric ratio and declining denudation rates often lead to undersupplied conditions with a lacustrine and / or marine sedimentary environment. Sedimentation is here very sensitive to climate fluctuations, and prediction of evaporative mineral formation needs to be modeled by a geochemical computer program. The usefulness of our concept is demonstrated by applications to the Qinghai rift basin, China and the Turkana rift basin, East Africa. Their sediment filling was reconstructed since the Plioceneon the basisrates of extension, subsidence and denudation derived from field observations. The climate controlled short term evolution during the late Quaternary was modeled using ageochemical computer program, and predictions of formation of evaporitic minerals are provided for three different climate scenarios. In an outlook we emphasize the combination of the concept of denudation-accumulation systems with more sophisticated two dimensional models based on sequence stratigraphy.UNSPECIFIED
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