Abstract (note: Partial) "Investigation of the nature of the folding of the Cambrian Tonto Group strata in the Grand Canyon necessitates first investigating the petrology of those strata. At the base of the Tonto Group the Tapeats Sandstone is the 30–100m thick cliff-forming formation...which consists of 0.3–1.0m thick non-bioturbated beds that are strongly cross laminated with shallow dips characteristic of water transport of the sand and many lens-shaped scour-and-fill 'channels.' The predominant paleocurrent direction is between west and southwest...There are no signs, either macroscopic or microscopic, that the sandstone or its constituent grains have been even slightly metamorphosed. Instead, the mineralogical content, textural features, sedimentary structures, continental-scale deposition, paleocurrent directions matching continental patterns, and even the tracks and traces of transitory invertebrates, all indicate rapid burial. Furthermore, all are consistent with the catastrophic erosion of the Great Unconformity near the initiation of the global Genesis Flood cataclysm only about 4,350 years ago, and the subsequent hurricane-and tsunami-driven rapid short-distance transport and deposition of the Tapeats Sandstone, likely in the first few days or weeks of that year-long event." by Dr. Andrew A. Snelling Published on June 23, 2021 Answers Research Journal (2021 Volume 14) pp159–254. See link below for entire article.
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