Portal de Periódicos da CAPES

Shelf hypoxia in response to global warming after the Cretaceous-Paleogene boundary impact

2018; Geological Society of America; Volume: 46; Issue: 8 Linguagem: Inglês

10.1130/g45000.1

1943-2682

Johan Vellekoop, Lineke Woelders, Niels A. G. M. van Helmond, Simone Galeotti, Jan Smit, Caroline P. Slomp, Henk Brinkhuis, Philippe Claeys, Robert P. Speijer,

Marine and coastal ecosystems

Research Article| June 22, 2018 Shelf hypoxia in response to global warming after the Cretaceous-Paleogene boundary impact Johan Vellekoop; Johan Vellekoop 1Department of Earth and Environmental Sciences, KU Leuven, 3001 Heverlee, Belgium2Analytical, Environmental and Geo-Chemistry (AMGC), Vrije Universiteit Brussel, B-1050 Brussels, Belgium Search for other works by this author on: GSW Google Scholar Lineke Woelders; Lineke Woelders 1Department of Earth and Environmental Sciences, KU Leuven, 3001 Heverlee, Belgium Search for other works by this author on: GSW Google Scholar Niels A.G.M. van Helmond; Niels A.G.M. van Helmond 3Department of Earth Sciences, Utrecht University, 3508 TA Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Simone Galeotti; Simone Galeotti 4Department of Earth, Life and Environmental Sciences, University of Urbino 'Carlo Bo', 61029 Urbino, Italy Search for other works by this author on: GSW Google Scholar Jan Smit; Jan Smit 5Department of Sedimentology and Marine Geology, VU University Amsterdam, 1018HV Amsterdam, Netherlands Search for other works by this author on: GSW Google Scholar Caroline P. Slomp; Caroline P. Slomp 3Department of Earth Sciences, Utrecht University, 3508 TA Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Henk Brinkhuis; Henk Brinkhuis 3Department of Earth Sciences, Utrecht University, 3508 TA Utrecht, Netherlands Search for other works by this author on: GSW Google Scholar Philippe Claeys; Philippe Claeys 2Analytical, Environmental and Geo-Chemistry (AMGC), Vrije Universiteit Brussel, B-1050 Brussels, Belgium Search for other works by this author on: GSW Google Scholar Robert P. Speijer Robert P. Speijer 1Department of Earth and Environmental Sciences, KU Leuven, 3001 Heverlee, Belgium Search for other works by this author on: GSW Google Scholar Geology (2018) 46 (8): 683–686. https://doi.org/10.1130/G45000.1 Article history received: 04 Apr 2018 rev-recd: 11 Jun 2018 accepted: 11 Jun 2018 first online: 22 Jun 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Johan Vellekoop, Lineke Woelders, Niels A.G.M. van Helmond, Simone Galeotti, Jan Smit, Caroline P. Slomp, Henk Brinkhuis, Philippe Claeys, Robert P. Speijer; Shelf hypoxia in response to global warming after the Cretaceous-Paleogene boundary impact. Geology 2018;; 46 (8): 683–686. doi: https://doi.org/10.1130/G45000.1 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 Chicxulub asteroid impact at the Cretaceous-Paleogene (K-Pg) boundary resulted in one of the most abrupt global warming events in the past 100 m.y., presenting an analogue to current global warming. Here, we present high-resolution geochemical, micropaleontological, and palynological records of the Brazos-1 (Texas, USA), Stevns Klint (Denmark), and Caravaca (Spain) K-Pg boundary sections to assess the rapid environmental changes during the global warming following the brief K-Pg boundary impact winter. Warming during the first millennia after the impact is associated with hypoxic bottom waters at the studied shelf sites, as indicated by molybdenum enrichments, causing major stress for benthic communities. We attribute this decline in dissolved oxygen to a combination of decreased gas solubility and ocean ventilation resulting from the warming of the sea water, and increased oxygen demand in shelf bottom waters due to increased nutrient inputs and associated high productivity. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.