ABSTRACT Geologists both within and outside the creation community have long proposed a breached dam and lake spillover hypothesis for the formation of Grand Canyon in whole or in part. One major lake system pointed to has been dubbed Hopi Lake or Lake Bidahochi, with supporting evidence found within the Bidahochi Formation. The Bidahochi Formation in eastern Arizona overlies the Chinle Formation in many places and is described as a Miocene-Pliocene lacustrine deposit. As such, several creation geologists assign this to a depositional environment during the post-Flood Ice Age. Yet, there is a small group within the creation community who tend to disregard the Bidahochi Formation as being post-Flood and find no evidence for the large lake system proposed for its formation and the subsequent breaching of the Kaibab Plateau by Hopi-Bidahochi Lake and other linked lakes to the north in connection to a rapid and catastrophic formation for Grand Canyon in a post-Flood timeframe. This poster does not attempt to deal with the entirety of the lake system within the Colorado Plateau, but rather only Hopi-Bidahochi Lake found within the Bidahochi Basin. The data presented is based on multiple years of physical survey and ongoing field research that includes both fossil and geological evidence supporting a post-Flood large lake in the Bidahochi Basin, believed to be responsible in part for the formation of Grand Canyon. Included imagery will show transgressional terraces, stromatolitic tufa, preserved ice casts, and post-Flood lacustrine and avian fossils found near the proposed shoreline of this lake in elevations of ~5,800 feet and above. The poster presentation highlights multiple locations within the Bidahochi Basin where supporting evidence may be found, and draws from more than a century of published works by geologists and paleontologists in pursuit of unraveling the geology and landscape surrounding the Grand Canyon and its formation. KEYWORDS Bidahochi Formation, Bidahochi Lake, Hopi Lake, Grand Canyon THE AUTHOR Nate Loper is the Executive Director for Canyon Ministries, which provides Christian education and events to thousands of people each year through tours, hiking, backpacking, and river trips at the Grand Canyon and southwest from a biblical creation perspective for over 25 years. He has spent nearly 1,000 days studying and teaching geology, paleontology, and archaeology at the Grand Canyon and surrounding Colorado Plateau, including leading dozens of river trips on the Colorado River through the Grand Canyon. Nate Loper, Canyon Ministries, 2727 W. Route 66, Flagstaff, Arizona 86001 nate@canyonministries.org © Cedarville University International Conference on Creationism. The views expressed in this publication are those of the author(s) and do not necessarily represent those of Cedarville University. 9th 2023 682 Loper, N. 2023. Physical evidence for a post-Flood lacustrine depositional environment for Hopi/Bidahochi lake [poster]. In J.H. Whitmore (editor), Proceedings of the Ninth International Conference on Creationism, pp. 682-683. Cedarville, Ohio: Cedarville University International Conference on Creationism. PHYSICAL EVIDENCE FOR A POST-FLOOD LACUSTRINE DEPOSITIONAL ENVIRONMENT FOR HOPI/BIDAHOCHI LAKE
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