Your browser does not fully support modern features. Please upgrade for a smoother experience.
Submitted Successfully!
Thank you for your contribution! You can also upload a video entry or images related to this topic. For video creation, please contact our Academic Video Service.
Version Summary Created by Modification Content Size Created at Operation
1 handwiki Sirius Huang -- 2327 2022-11-25 01:34:35

Video Upload Options

We provide professional Academic Video Service to translate complex research into visually appealing presentations. Would you like to try it?
No, upload directly Yes
Cite
If you have any further questions, please contact Encyclopedia Editorial Office.
HandWiki. Climate Across Cretaceous–Paleogene Boundary. Encyclopedia. Available online: https://encyclopedia.pub/entry/36612 (accessed on 25 September 2026).
HandWiki. Climate Across Cretaceous–Paleogene Boundary. Encyclopedia. Available at: https://encyclopedia.pub/entry/36612. Accessed September 25, 2026.
HandWiki. "Climate Across Cretaceous–Paleogene Boundary" Encyclopedia, https://encyclopedia.pub/entry/36612 (accessed September 25, 2026).
HandWiki. (2022, November 25). Climate Across Cretaceous–Paleogene Boundary. In Encyclopedia. https://encyclopedia.pub/entry/36612
HandWiki. "Climate Across Cretaceous–Paleogene Boundary." Encyclopedia. Web. 25 November, 2022.
Climate Across Cretaceous–Paleogene Boundary
Edit
The content is sourced from: https://handwiki.org/wiki/Earth:Climate_across_Cretaceous%E2%80%93Paleogene_boundary

The climate across the Cretaceous–Paleogene boundary (K–Pg or formerly the K–T boundary) is very important to geologic time as it marks a catastrophic global extinction event. Numerous theories have been proposed as to why this extinction event happened including an asteroid known as the Chicxulub asteroid, volcanism, or sea level changes. While the mass extinction is well documented, there is much debate about the immediate and long-term climatic and environmental changes caused by the event. The terrestrial climates at this time are poorly known, which limits the understanding of environmentally driven changes in biodiversity that occurred before the Chicxulub crater impact. Oxygen isotopes across the K–T boundary suggest that oceanic temperatures fluctuated in the Late Cretaceous and through the boundary itself. Carbon isotope measurements of benthic foramifinera at the K–T boundary suggest rapid, repeated fluctuations in oceanic productivity in the 3 million years before the final extinction, and that productivity and ocean circulation ended abruptly for at least tens of thousands of years just after the boundary, indicating devastation of terrestrial and marine ecosystems. Some researchers suggest that climate change is the main connection between the impact and the extinction. The impact perturbed the climate system with long-term effects that were much worse than the immediate, direct consequences of the impact.

climate change ocean circulation climate system

References

  1. Fortey, R. Life: A Natural History of the First Four Billion Years of Life on Earth. Vintage. 1999. pp. 238–260.
  2. "Dinosaurs Rule the World: Late Cretaceous Period." In: Dodson, Peter & Britt, Brooks & Carpenter, Kenneth & Forster, Catherine A. & Gillette, David D. & Norell, Mark A. & Olshevsky, George & Parrish, J. Michael & Weishampel, David B. The Age of Dinosaurs. Publications International, LTD. Pp. 103–104.
  3. MacLeod, Kenneth. "Cretaceous Climate Tied to Ocean Circulation." Cretaceous Climate Tied to Ocean Circulation. University of Missouri, 29 Oct. 2011. Web. 10 Nov. 2012. .
  4. Li, Liangquan, and Gerta Keller. "Maastrichtian Climate, Productivity, and Faunal Turnovers in Planktic Foramifinera in South Atlantic DSDP Sites 525A and 21." Princeton University, 21 Mar. 1997. Web. 10 Nov. 2012.
  5. Nordt, Lee, Stacy Atchley, and Steve Dworkin. "Terrestrial Evidence for Two Greenhouse Events in the Latest Cretaceous." Baylor University, 6 Oct. 2003. Web. 10 Nov. 2012.
  6. Scotese, Christopher R. "Paleocene Climate." Paleocene Climate. SciLinks, n.d. Web. 10 Nov. 2012. .
  7. Nordt, Lee, Stacy Atchley, and Steve Dworkin. "Terrestrial Evidence for Two Greenhouse Events in the Latest Cretaceous." Baylor University, 6 Oct. 2003. Web. 10 Nov. 2012.
  8. Naafs (2018). "High temperatures in the terrestrial mid-latitudes during the early Palaeogene". Nature Geoscience 11 (10): 766–771. doi:10.1038/s41561-018-0199-0. Bibcode: 2018NatGe..11..766N. https://eprints.soton.ac.uk/437527/1/Combined_manuscript_submitted_June_2018_Naafs.pdf. 
  9. University of Bristol (30 July 2018). "Ever-increasing CO2 levels could take us back to the tropical climate of Paleogene period". ScienceDaily. 
  10. "Ever-increasing CO2 levels could take us back to the tropical climate of Paleogene period". University of Bristol. 2018. https://www.bristol.ac.uk/news/2018/july/co2-levels-paleogene-period.html. 
  11. Scotese, Christopher R. "Paleocene Climate." Paleocene Climate. SciLinks, n.d. Web. 10 Nov. 2012. .
  12. Sloan RE, Rigby K, Van Valen LM, Gabriel Diane (1986). "Gradual dinosaur extinction and simultaneous ungulate radiation in the Hell Creek formation". 1986. Science 232 (4750): 629–633.
  13. Fassett JE, Lucas SG, Zielinski RA, Budahn JR. "Compelling new evidence for Paleocene dinosaurs in the Ojo Alamo Sandstone San Juan Basin, New Mexico and Colorado, USA" (PDF). International Conference on Catastrophic Events and Mass Extinctions: Impacts and Beyond, 9–12 July 2000, Vienna, Austria 1053: 45–46. 2007-05-18. 2001.
  14. Wilf P, Johnson KR. "Land plant extinction at the end of the Cretaceous: a quantitative analysis of the North Dakota megafloral record". 2004. Paleobiology 30 (3): 347–368.
  15. Verschuur, Gerrit L. "Impact!: The Threat of Comets and Asteroids." Oxford University Press (U.S.). 1996.
  16. Futuyma, D. J., 1998, "Evolutionary Biology", Sinauer Ass.
  17. Toutain, J., and Meyer, G., 1989, "Iridium-bearing sublimates at the hot-spot volcano" (Piton de la Fournaise, Indian Ocean): Geophysical Research Letters, v. 16, p.1391–1394.
  18. Schulte, Peter, et al. "The Chucxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary." Science, 327. 2010.
  19. MacLeod N, Rawson PF, Forey PL, Banner FT, Boudagher-Fadel MK, Bown PR, Burnett JA, Chambers, P, Culver S, Evans SE, Jeffery C, Kaminski MA, AR, Milner AC, Milner AR, Morris N, Owen E, Rosen BR, Smith AB, Taylor PD, Urquhart E, Young JR (1997). "The Cretaceous–Tertiary biotic transition". Journal of the Geological Society 154 (2): 265–292.
  20. Marshall CR, Ward PD. "Sudden and Gradual Molluscan Extinctions in the Latest Cretaceous of Western European Tethys". Science 274 (5291): 1360–1363. 1996.
  21. Archibald, David; Fastovsky, David. "Dinosaur Extinction". In Weishampel David B, Dodson Peter, Osmólska Halszka (eds.). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 672–684. 2004.
  22. MacLeod N, Rawson PF, Forey PL, Banner FT, Boudagher-Fadel MK, Bown PR, Burnett JA, Chambers, P, Culver S, Evans SE, Jeffery C, Kaminski MA, AR, Milner AC, Milner AR, Morris N, Owen E, Rosen BR, Smith AB, Taylor PD, Urquhart E, Young JR (1997). "The Cretaceous–Tertiary biotic transition". Journal of the Geological Society 154 (2): 265–292.
  23. Sheehan Peter M, Hansen Thor A (1986). "Detritus feeding as a buffer to extinction at the end of the Cretaceous". Geology 14 (10): 868–870.
More
©Text is available under the terms and conditions of the Creative Commons-Attribution ShareAlike (CC BY-SA) license; additional terms may apply. By using this site, you agree to the Terms and Conditions and Privacy Policy.
Upload a video for this entry
Information
Subjects: Environmental Sciences
Contributor MDPI registered users' name will be linked to their SciProfiles pages. To register with us, please refer to https://encyclopedia.pub/register :
HandWiki
View Times: 1.7K
Entry Collection: HandWiki
Revision: 1 time (View History)
Update Date: 25 Nov 2022
Table of Contents
    Notice
    You are not a member of the advisory board for this topic. If you want to update advisory board member profile, please contact office@encyclopedia.pub.
    OK
    Confirm
    Only members of the Encyclopedia advisory board for this topic are allowed to note entries. Would you like to become an advisory board member of the Encyclopedia?
    Yes
    No
    ${ textCharacter }/${ maxCharacter }
    Submit
    Cancel
    There is no comment~
    ${ textCharacter }/${ maxCharacter }
    Submit
    Cancel
    ${ selectedItem.replyTextCharacter }/${ selectedItem.replyMaxCharacter }
    Submit
    Cancel
    Confirm
    Are you sure to Delete?
    Yes No
    Academic Video Service
    Feedback