South Fork and Heart Mountain Faults: Examples of Catastrophic, Gravity-Drive "Overthrusts," Northwest Wyoming, USA | The Institute for Creation Research
 
South Fork and Heart Mountain Faults: Examples of Catastrophic, Gravity-Drive "Overthrusts," Northwest Wyoming, USA

Download PDFDownload South Fork and Heart Mountain Faults: Examples of Catastrophic, Gravity-Drive "Overthrusts," Northwest Wyoming, USA PDF

In M. Horstemeyer, ed., 2013, Proceedings of the Seventh International Conference on Creationism, Pittsburgh, PA: Creation Science Fellowship. Visit the ICC at www.creationicc.org.

Abstract

Overthrust faults have been a source of debate and discussion in creation literature for many years. Their interpretation demands a better explanation in a Flood context. Two fault systems are examined as analogies for an “overthrust” model. The South Fork Fault System (SFFS) and the Heart Mountain Fault System (HMFS) exhibit folding and faulting consistent with thin-skinned overthrust systems. Both systems moved catastrophically under the influence of gravity. The South Fork Fault system (SFFS, southwest of Cody, Wyoming, exhibits tear faults, tight folds, a triangle zone, and flat-ramp geometries along the leading edge of the system. Transport was southeast, down a gentle slope during early to middle Eocene time (Late Flood), approximately coeval with the Heart Mountain Fault system (HMFS). The SFFS detaches in lower Jurassic strata, rich in gypsum-anhydrite, overlain by about 1250 m of Jurassic through Tertiary sedimentary and volcanic rocks. Movement between 5 km and 10 km to the southeast spread the allochthonous mass over an area exceeding 1400 km2. A break-away fault and an area of tectonic denudation mark the upper northwest part of the system. The exposed denuded surface was buried by additional Eocene-age volcanic rocks soon after slip. Catastrophic rear-loading during emplacement of HMFS may have initiated subsequent movement on the SFFS, with dehydration processes trapping water in a near frictionless anhydrite-water slurry. Rapid development of near-surface folds, as observed in the toe of the SFFS, could only have developed while the sediments were still unlithified.

Keywords

Break-away fault, denudation, detachment, gravity slide, gypsum dehydration, overthrust

For Full Text

Please see the Download PDF link above for the entire article.

The Latest
NEWS
DNA Repair Research Reveals Astounding Complexity
You have been designed with many trillions of cells. Within the nucleus of each cell (except for red blood cells) is the “molecule of life”...

NEWS
Photosynthesis: Clearly Designed from the Beginning
Unique structures in rare bacteria suggest the amazing process of photosynthesis is much “older” than evolutionists assumed. Photosynthesis...

NEWS
Under the Stars at ICR
On the evening of Friday, August 2, 154 creation enthusiasts attended an astronomy-themed evening at the ICR Discovery Center for Science and Earth...

NEWS
Inside August 2019 Acts & Facts
Why did we build the ICR Discovery Center for Science & Earth History? What solved mystery near Norway confirms Flood geology? How do bats, bees,...

NEWS
Rapid Chernobyl Adaptations Surprise Evolutionists
A recent Public Broadcasting Service (PBS) report highlighted creatures’ designed innate capacity to self-adjust to incredibly challenging exposures.1...