Can I read Some Comments on Two‐layer Extensional Models for the Evolution of Sedimentary Basins on EtoBox?
Some Comments on Two‐layer Extensional Models for the Evolution of Sedimentary Basins by Steven J. Hellinger; John G. Sclater is a Earth and Planetary Sciences article available to read on EtoBox.
What is Some Comments on Two‐layer Extensional Models for the Evolution of Sedimentary Basins about?
Simple extensional models that involve listric faulting in the brittle upper crust and plastic flow in the lower lithosphere have been shown to account for the subsidence history of various continental sedimentary basins and continental shelves. In this paper we present structural evidence that extension in the continental lithosphere during rifting is not uniform. We review evidence that the rifting process in major intracratonic rift basins is spasmodic rather than continuous, that extension and subsidence within the rift during a tectonic phase is generally accompanied by uplift and erosion of the rift flanks, that subcrustal heat input during rifting occurs over an area much broader than the rift proper, and that there may be broad regional uplift before and/or during rifting. To explain the uplift of the flanks during rifting and their postrift subsidence, we invoke two mechanisms: subcrustal thinning by extension below the flanks and tilted major normal faults in the crust between graben and flanks. The uplift and erosion of the flanks due to tilted faults probably do not significantly affect estimates of extension from subsidence analysis, but uplift due to both sources can,
Who reads Some Comments on Two‐layer Extensional Models for the Evolution of Sedimentary Basins?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- Steven J. Hellinger; John G. Sclater
- Publisher
- American Geophysical Union (AGU)
- Published
- 1983
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)