Massive Cretaceous-Paleogene boundary deposit, deep-water Gulf of Mexico: New evidence for widespread Chicxulub-induced slope failure

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Research Article| September 01, 2013 Massive Cretaceous-Paleogene boundary deposit, deep-water Gulf of Mexico: New evidence for widespread Chicxulub-induced slope failure Richard A. Denne; Richard A. Denne 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Search for other works by this author on: GSW Google Scholar Erik D. Scott; Erik D. Scott 2Talisman Energy USA Inc., 9320 Lakeside Boulevard, The Woodlands, Texas 77381, USA Search for other works by this author on: GSW Google Scholar David P. Eickhoff; David P. Eickhoff 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Search for other works by this author on: GSW Google Scholar James S. Kaiser; James S. Kaiser 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Search for other works by this author on: GSW Google Scholar Ronald J. Hill; Ronald J. Hill 3Noble Energy, 1625 Broadway, Suite 2200, Denver, Colorado 80202, USA Search for other works by this author on: GSW Google Scholar Joan M. Spaw Joan M. Spaw 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Richard A. Denne 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Erik D. Scott 2Talisman Energy USA Inc., 9320 Lakeside Boulevard, The Woodlands, Texas 77381, USA David P. Eickhoff 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA James S. Kaiser 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Ronald J. Hill 3Noble Energy, 1625 Broadway, Suite 2200, Denver, Colorado 80202, USA Joan M. Spaw 1Marathon Oil Corporation, 5555 San Felipe, Houston, Texas 77056, USA Publisher: Geological Society of America Received: 19 Feb 2013 Revision Received: 29 Apr 2013 Accepted: 30 Apr 2013 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (9): 983–986. https://doi.org/10.1130/G34503.1 Article history Received: 19 Feb 2013 Revision Received: 29 Apr 2013 Accepted: 30 Apr 2013 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Richard A. Denne, Erik D. Scott, David P. Eickhoff, James S. Kaiser, Ronald J. Hill, Joan M. Spaw; Massive Cretaceous-Paleogene boundary deposit, deep-water Gulf of Mexico: New evidence for widespread Chicxulub-induced slope failure. Geology 2013;; 41 (9): 983–986. doi: https://doi.org/10.1130/G34503.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The single largest-known mass wasting deposit has been identified at the Cretaceous-Paleogene (K-Pg) boundary in the deep-water Gulf of Mexico, in 31 industry-drilled wells and on seismic data, corresponding to the "MCU" (middle Cretaceous unconformity) horizon. The deposit has an average thickness of 10–20 m on the upper slope and 90–200 m on the lower slope and basin floor, and is on an unconformity that represents 9 m.y. to 85 m.y. The deposit contains the distinctive association of lithic fragments, impact-derived material, and reworked microfossils (i.e., the Cretaceous-Tertiary boundary "cocktail") associated with the Chicxulub impact, and is predominantly composed of graded pelagic carbonates. These new findings substantiate widespread slope failure induced by the Chicxulub impact and provide further evidence of a single impact coincident with the K-Pg mass extinction. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.