1. Tectonic control on coarse-grained foreland-basin sequences: An example from the Cordilleran foreland basin, Utah.
- Author
-
Horton, Brian K., Constenius, Kurt N., and DeCelles, Peter G.
- Subjects
- *
SEQUENCE stratigraphy , *OROGENIC belts , *STRUCTURAL geology , *GEOLOGICAL basins , *GEOLOGY - Abstract
Newly released reflection seismic and borehole data, combined with sedimentological, provenance, and biostratigraphic data from Upper Cretaceous—Paleocene strata in the proximal part of the Cordilleran foreland-basin system in Utah, establish the nature of tectonic controls on stratigraphic sequences in the proximal to distal foreland basin. During Campanian time, coarse-grained sand and gravel were derived from the internally shortening Charleston-Nebo salient of the Sevier thrust belt. A rapid, regional Campanian progradational event in the distal foreland basin (>200 km from the thrust belt in >8 m.y.) can be tied directly to active thrust-generated growth structures and an influx of quartzose detritus derived from the Charleston-Nebo salient. Eustatic sea-level variation exerted a minimal role in sequence progradation. [ABSTRACT FROM AUTHOR]
- Published
- 2004
- Full Text
- View/download PDF