Search the Community
Showing results for tags 'impact crater'.
Found 12 results
-
An icy mystery deep in Arctic Canada Phoebe Smith, BBC News, Geologic Marvels, April 4, 2022 Yours, Paul H.
-
https://www.bbc.com/news/science-environment-62575581
- 2 replies
-
- 5
-
-
-
- impact crater
- k-pg boundary
- (and 1 more)
-
Late Paleocene age for Greenland’s Hiawatha impact structure
Oxytropidoceras posted a topic in Fossil News
Controversial impact crater under Greenland’s ice is surprisingly ancient New date of 58 million years undercuts idea that strike triggered recent 1000-year plunge in temperatures By Paul Voose, Science News, March, 9, 2022 Giant impact crater in Greenland occurred a few million years after dinosaurs went extinct by University of Copenhagen, PhysOrg Wikipedia article discussing Hiawatha impact structure The open access paper is: Kenny, G. G., and others, 2022, A Late Paleocene age for Greenland’s Hiawatha impact structure. Science Advances. vol. 8, no. 10 Yours, Paul H.-
- 2
-
-
- greenland
- hiawatha glacier
- (and 8 more)
-
Yilan crater, a newly identified impact structure in northeast China.
Oxytropidoceras posted a topic in Geology
Satellite Spots Massive Asteroid Impact Crater in China Though missing some of its rim, the recently discovered impact site is clearly recognizable from above. By Isaac Schultz, Gizmodo, March 3, 2022 Young Impact Crater Uncovered in Yilan, China By Sara E. Pratt, SciTechDaily, March 3, 2022 Chen, M., Xie, X., Xiao, W. and Tan, D., 2019. Yilan crater, a newly identified impact structure in northeast China. Chinese Science Bulletin, 65(10), pp.948-954. Chen, M., Koeberl, C., Tan, D., Ding, P., Xiao, W., Wang, N., Chen, Y. and Xie, X., 2021. Yilan crater, China: Evidence for an origin by meteorite impact. Meteoritics & Planetary Science, 56(7), pp.1274-1292. More papers by Dr. Xie Xiande, Chinese Academy of Sciences Yours, Paul H. -
Two new publications about the Pleistocene Hiawatha impact crater, Greenland.
Oxytropidoceras posted a topic in Geology
Gustafsson, J., 2020. Impactites from the Hiawatha crater, North-West Greenland. unpublished MS thesis, Department of Geological Sciences, Stockholm University, Sweden. open access Abstract of and link for Gustafsson (2020) PDF file of Gustafsson (2020) Silber, E.A., Johnson, B.C., Bjonnes, E., MacGregor, J.A., Larsen, N.K. and Wiggins, S.E., 2021. Effect of ice sheet thickness on formation of the Hiawatha impact crater. Earth and Planetary Science Letters, 566, p.116972. Abstract of Siber et al. (2021) Preprint of Siber et al. (2021) More publications by Elizabeth A. Silber Yours Paul H. -
First Impact Crater Found in Korea The open access paper is: Jaesoo Lim, Sei-Sun Hong, Min Han, Sangheon and Yi, Sung Won Kim, 2021, First finding of impact cratering in the Korean Peninsula, Gondwana Research, Volume 91, 121-128, Yours, Paul H.
-
Yarrabubba impact structure, Australia, dated to 2224 - 2234 Ma (end of Snowball Earth)
Oxytropidoceras posted a topic in Geology
Earth's oldest asteroid strike linked to 'big thaw' Curtin University, January 22, 2020 https://www.sciencedaily.com/releases/2020/01/200122100546.htm the open access paper is: Timmons M. Erickson, Christopher L. Kirkland, Nicholas E. Timms, Aaron J. Cavosie, Thomas M. Davison. Precise radiometric age establishes Yarrabubba, Western Australia, as Earth’s oldest recognised meteorite impact structure. Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-019-13985-7 https://www.nature.com/articles/s41467-019-13985-7 Yours, Paul H. -
I got one of these tektites almost 20 years ago in Vietnam and have been intrigued by the mystery of this 800,000 year old impact event since. This type of tektites has been found in Antarctica, Australia, and Asia. Now scientists may have found the impact crater hiding under large Laotian lava lake. https://astronomy.com/news/2020/01/crater-found-from-asteroid-that-covered-10-of-earths-surface-in-debris
- 1 reply
-
- 1
-
-
- impact crater
- indochinite
- (and 1 more)
-
A Possible Second Large Subglacial Impact Crater in Northwest Greenland
Oxytropidoceras posted a topic in Fossil News
Scientist May Have Discovered Massive Crater Under Greenland Ice Sheet, Daily Beast, Feb. 2019 https://www.thedailybeast.com/scientist-may-have-discovered-massive-crater-under-greenland-ice-sheet Photos: Craters Hidden Beneath the Greenland Ice Sheet, Live Science, February 12, 2019 https://www.livescience.com/64755-photos-greenland-craters.html The open access paper is: Joseph A. MacGregor, William F. Bottke, Jr., Mark A. Fahnestock, Jeremy P. Harbeck, Kurt H. Kjær, John D. Paden, David E. Stillman, and Michael Studinger, 2019, A Possible Second Large Subglacial Impact Crater in Northwest Greenland First published: 11 February 2019 https://doi.org/10.1029/2018GL078126 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL078126 The paper states: "Based on the dated radiostratigraphy of the Greenland Ice Sheet, available for pre-2014 radar data only, the ice overlying the structure is at least 79 ka old (Figures 1e–1h; MacGregor et al., 2015)." Yours, Paul H. -
Was the Falkland Islands region hit by a giant asteroid?
Oxytropidoceras posted a topic in Fossil News
Stone, P. and McCarthy, D., 2018. Were the Falkland Islands hit by a giant asteroid 250 million years ago?. Falkland Islands Journal, 11(2), pp.42-54. http://nora.nerc.ac.uk/id/eprint/521520/ http://nora.nerc.ac.uk/id/eprint/521520/1/STONE AND MCCARTHY FIJ 2018pp 42-54.pdf Yours, Paul H.- 1 reply
-
- 4
-
-
- asteroid impacts
- diamictites
- (and 9 more)
-
Giant Impact Crater Might Be Hidden Under Greenland Icesheet
Oxytropidoceras posted a topic in Fossil News
This is interesting. Scientists Spot What May Be a Giant Impact Crater Hidden Under Greenland Ice By Meghan Bartels, Space.com, November 14, 2018 https://www.space.com/42431-giant-impact-crater-hidden-under-greenland-ice.html The open access paper is: Kurt H. Kjær, Nicolaj K. Larsen, Tobias Binder, and many others A large impact crater beneath Hiawatha Glacier in northwest Greenland. Science Advances 14 Nov 2018:Vol. 4, no. 11, eaar8173 DOI: 10.1126/sciadv.aar8173 http://advances.sciencemag.org/content/4/11/eaar8173 Yours, Paul H.- 3 replies
-
- 4
-
-
- greenland
- impact crater
- (and 2 more)
-
Impact Crater Linked to Martian Tsunamis By Paul Rincon, BBC News website, March 26, 2017 http://www.bbc.com/news/science-environment-39394583 Water On Mars: Researchers Link Lomonosov Crater To Ancient Martian Tsunamis by Avaneesh IBT, March 26, 2017 http://www.ibtimes.com/water-mars-researchers-link-lomonosov-crater-ancient-martian-tsunamis-2515241 The paper is: Costard, F., A. Séjourné, K. Kelfoun, S. Clifford, F. Lavigne, I. Di Pietro, and S. Bouley (2017), Modeling tsunami propagation and the emplacement of thumbprint terrain in an early Mars ocean, Journal Geophysical Research Planets, 122, doi:10.1002/2016JE005230 http://onlinelibrary.wiley.com/doi/10.1002/2016JE005230/full An article about studying Mars is: Studying Martian Rocks Without Leaving Planet Earth Matching Martian rock formations to those found on Earth can help researchers learn more about the Red Planet. By Alexandra Branscombe, AGU, March 1, 2017 https://eos.org/research-spotlights/studying-martian-rocks-without-leaving-planet-earth Other articles about geological research at https://eos.org/research-spotlights Yours, Paul H.
