Journal of Undergraduate Research
Keywords
tempestites, entrada sandstone, reservoir characterization
College
Physical and Mathematical Sciences
Department
Geological Sciences
Abstract
Tempestites are sedimentary deposits traditionally thought to be formed by high-energy storm events. Typically, water depth for tempestites has been interpreted to be between fair weather and storm wave base. Tempestites are primarily identified in the rock record by hummocky cross-stratification (HCS). HCS is a typical indicator of oscillatory flow in subaqueous settings, where strong wave action can scour and redeposit sediment. Tempestites may also contain sole marks and various forms of ripples. Some work has been done on tempestites in lower shoreface and carbonate ramp settings, but little research has been done on tempestites in very shallow water to emergent siliciclastic settings. Utah’s Jurassic (Callovian) Entrada Sandstone hosts fine-grained sand units that demonstrate apparent hummocky cross-stratification (AHCS), yet appear to be imbedded within very shallow to emergent settings such as coastal sabkhas and alluvial plains.
Recommended Citation
Valenza, Jeffery and Morris, Dr. Tom
(2015)
"Tempestites of the Entrada Sandstone: Mapping and Reservoir Characterization,"
Journal of Undergraduate Research: Vol. 2015:
Iss.
1, Article 201.
Available at:
https://scholarsarchive.byu.edu/jur/vol2015/iss1/201