Superfaults and Pseudotachylytes: Evidence of Catastrophic Earth Movements | The Institute for Creation Research
Superfaults and Pseudotachylytes: Evidence of Catastrophic Earth Movements

Download PDFDownload Superfaults and Pseudotachylytes: Evidence of Catastrophic Earth Movements PDF

by Timothy L. Clarey, Ph.D., Steven A. Austin, Ph.D., Stephen Cheung, B.Sc., and Raymond Strom, Ch.T.

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


Superfaults often exhibit an unusual rock called pseudotachylyte, and together these two features are critical to our understanding of catastrophic tectonics. Superfaults are rapid-moving, single-slip displacement surfaces involving very large offsets with the moving-block side of the fault being unconfined or unpinned during rapid gravity offset. Pseudotachylyte is the dark-colored, metamorphic silicate glass formed by frictional melting upon the superfault surface at temperature exceeding 1000oC, and often displaying distinctive isotropic or cryptocrystalline optical properties. Pseudotachylyte is understood to be evidence of high-speed rock movement during superquakes, where displacements occurred much faster than during modern magnitude 9 earthquakes. Superfaults, pseudotachylyte and superquakes are interpreted as support for global catastrophic tectonic activity. Hand specimens and field data were collected from Homestake Shear Zone in central Colorado, and from the Pasagshak Thrust, Kodiak Island, Alaska. Thin-section analysis shows the presence of glass melt and/or aphanitic black rocks containing pseudotachylyte, and the development of numerous pressure solution surfaces within cataclasite rocks. Cross-cutting relationships support repeated episodes of fault movement and subsequent melt development at both sites. Data gathered from the Homestake Shear Zone supports rapid catastrophic Earth movements during the formation of the North American continent on Day 3 of the Creation Week. Evidence from the Pasagshak Thrust supports the subduction model of catastrophic plate tectonics, with the fault being active during and after Noah’s Flood. Proceedings of the Seventh International Conference on Creationism. Pittsburgh, PA: Creation Science Fellowship


Superfault, pseudotachylyte, cataclasite, black fault rock, subduction, catastrophic plate tectonics, supercritical fluid

For Full Text

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

The Latest
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”...

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

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...

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,...

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...