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Immediate and postevent effects of the K/Pg boundary Chicxulub impact on the northern Gulf of Mexico

Erik Scott, Richard Denne, James Kaiser and David Eichkoff
Immediate and postevent effects of the K/Pg boundary Chicxulub impact on the northern Gulf of Mexico (in Papers presented at the 32nd annual GCSSEPM Foundation Bob F. Perkins research conference; New understanding of the petroleum systems of continental margins of the world, Norman C. Rosen (editor), Paul Weimer (editor), Sylvia Maria Coutes dos Anjos (editor), Sverre Henrickson (editor), Edmundo Marques (editor), Mike Mayall (editor), Richard Fillon (editor), Tony D'Agostino (editor), Art Saller (editor), Kurt Campion (editor), Tim Huang (editor), Rick Sarg (editor) and Fred Schroeder (editor))
Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference (2012) 32: 96-109

Abstract

The Chicxulub bolide impact on the Yucatan peninsula at the Cretaceous-Paleogene (K/Pg) boundary has been postulated as the trigger that remobilized sediment into mass transport flows on the submerged shelf along eastern North and Central America as well as around the Gulf of Mexico and redistributed sediment out into the deep water Atlantic, Caribbean, and Gulf of Mexico. Well log and biostratigraphic data from Cretaceous well penetrations in the deep-water northern Gulf of Mexico show a distinctive micritic deposit at the K/Pg boundary that is similar in composition and biostratigraphy to sediments found near the Chicxulub crater, DSDP/ODP cores, and outcrops in Cuba. Investigation of seismic data in the northern Gulf of Mexico shows anomalous sedimentary wedges of high amplitude reflectors situated at the top of the Cretaceous section that are interpreted to be the resulting deposit from the mass transport flows and suspension fallout initiated by the impact. At the end of the Cretaceous, the northern Gulf of Mexico was undergoing allocthonous salt movement from the Jurassic Louann Salt that was expressed in numerous salt highs defining potential clastic sediment fairways. The sediment redistribution caused by the Chicxulub impact filled in the available accommodation space around the salt highs, as well as depositing on the highs themselves, and altered the seafloor topography across the northern Gulf of Mexico. This resulted in an efficient transportation pathway from shelf to deep water and influenced the sedimentation patterns of the subsequent sediment gravity flows of the Wilcox Formation.


ISSN: 1544-2462
Serial Title: Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference
Serial Volume: 32
Title: Immediate and postevent effects of the K/Pg boundary Chicxulub impact on the northern Gulf of Mexico
Title: Papers presented at the 32nd annual GCSSEPM Foundation Bob F. Perkins research conference; New understanding of the petroleum systems of continental margins of the world
Author(s): Scott, ErikDenne, RichardKaiser, JamesEichkoff, David
Author(s): Rosen, Norman C.editor
Author(s): Weimer, Pauleditor
Author(s): Coutes dos Anjos, Sylvia Mariaeditor
Author(s): Henrickson, Sverreeditor
Author(s): Marques, Edmundoeditor
Author(s): Mayall, Mikeeditor
Author(s): Fillon, Richardeditor
Author(s): D'Agostino, Tonyeditor
Author(s): Saller, Arteditor
Author(s): Campion, Kurteditor
Author(s): Huang, Timeditor
Author(s): Sarg, Rickeditor
Author(s): Schroeder, Frededitor
Affiliation: Marathon Oil, Houston, TX, United States
Pages: 96-109
Published: 2012
Text Language: English
Publisher: Society of Economic Paleontologists, Gulf Coast Section (GCSSEPM) Foundation, Houston, TX, United States
ISBN: 978-0-9836097-8-0
Meeting name: 32nd annual GCSSEPM Foundation Bob F. Perkins research conference
Meeting location: Houston, TX, USA, United States
Meeting date: 20121202Dec. 2-5, 2012
References: 4
Accession Number: 2017-003515
Categories: Stratigraphy
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., sects., block diag.
N18°00'00" - N30°04'00", W98°00'00" - W80°30'00"
N19°40'00" - N21°38'60", W90°22'00" - W87°30'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201704
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