Buchanan Lake Formation

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Buchanan Lake Formation
Stratigraphic range: Lutetian
46.2–40.4  Ma
Type Formation
Unit of Eureka Sound Group
Location
Region Axel Heiberg Island, Nunavut
Country Canada

The Buchanan Lake Formation is a geologic formation on Axel Heiberg Island in Nunavut, and part of the Eureka Sound Group. The formation is divided into four members and preserves fossils dating back to the Lutetian stage. Numerous species of plants, including Larix, Pseudolarix , pines, and cypress trees, have been found here. [1] [2] [3] [4] [5] [6] These fossils reveal that back during the Eocene, this area was once a very humid environment that was covered in swamp forests. [7] [8] The animals that lived in this environment include brontotheres, ancient tapirs, primates, panthodonts like Coryphodon , rodents, alligators, snakes, turtles, and birds like Gastornis and Presbyornis lived in this environment. [9] [10] [11] [12]

See also

References

  1. ↑ Lepage, B A; Basinger, J F (1991). Early tertiary larix from the Buchanan Lake formation, Canadian Arctic Archipelago, and a consideration of the phytogeography of the genus (Report). Natural Resources Canada/CMSS/Information Management.
  2. ↑ Simoneit, Bernd R. T.; Otto, Angelika; Kusumoto, Norihisa; Basinger, James F. (2016-12-01). "Biomarker compositions of Glyptostrobus and Metasequoia (Cupressaceae) fossils from the Eocene Buchanan Lake Formation, Axel Heiberg Island, Nunavut, Canada reflect diagenesis from terpenoids of their related extant species" . Review of Palaeobotany and Palynology. 235: 81–93. doi:10.1016/j.revpalbo.2016.07.012. ISSN   0034-6667.
  3. ↑ LePAGE, BEN A. (2001-02-01). "New species of Picea A. Dietrich (Pinaceae) from the middle Eocene of Axel Heiberg Island, Arctic Canada". Botanical Journal of the Linnean Society. 135 (2): 137–167. doi:10.1111/j.1095-8339.2001.tb01088.x. ISSN   0024-4074.
  4. ↑ Anderson, Ken B.; LePage, Ben A. (1996-05-05), "Analysis of Fossil Resins from Axel Heiberg Island, Canadian Arctic" , Amber, Resinite, and Fossil Resins, ACS Symposium Series, vol. 617, no. 617, American Chemical Society, pp. 170–192, doi:10.1021/bk-1995-0617.ch009, ISBN   978-0-8412-3336-2 , retrieved 2025-04-02
  5. ↑ Harrington, Guy J.; Eberle, Jaelyn; Le-Page, Ben A.; Dawson, Mary; Hutchison, J. Howard (2012). "Arctic plant diversity in the Early Eocene greenhouse". Proceedings: Biological Sciences. 279 (1733): 1515–1521. ISSN   0962-8452.
  6. ↑ Basinger, J. F.; Basinger, J. F. (1991-01-01). "The fossil forests of the buchanan lake formation early tertiary axel heiberg island canadian arctic archipelago northwest territories canada preliminary floristics and paleoclimate". Geological Survey of Canada Bulletin. 403: 39–66. ISSN   0068-7626.
  7. ↑ Greenwood, David R.; Basinger, James F. (September 1993). "Stratigraphy and floristics of Eocene swamp forests from Axel Heiberg Island, Canadian Arctic Archipelago" . Canadian Journal of Earth Sciences. 30 (9): 1914–1923. doi:10.1139/e93-169. ISSN   0008-4077.
  8. ↑ Greenwood, David R.; Basinger, James F. (1994-03-01). "The paleoecology of high-latitude Eocene swamp forests from Axel Heiberg Island, Canadian High Arctic" . Review of Palaeobotany and Palynology. Fossil Plants as Palaeoenvironmental Indicators. 81 (1): 83–97. doi:10.1016/0034-6667(94)90128-7. ISSN   0034-6667.
  9. ↑ Eberle, J. J.; Greenwood, D. R. (2011-12-09). "Life at the top of the greenhouse Eocene world--A review of the Eocene flora and vertebrate fauna from Canada's High Arctic" . Geological Society of America Bulletin. 124 (1–2): 3–23. doi:10.1130/b30571.1. ISSN   0016-7606.
  10. ↑ Padgett, Ashly B.; Hyland, Ethan G.; West, Christopher K.; Burgener, Landon K.; Greenwood, David R.; Basinger, James F. (2023). "Paleogene Paleohydrology of Ellesmere and Axel Heiberg Islands (Arctic Canada) From Palustrine Carbonates". Paleoceanography and Paleoclimatology. 38 (10): e2023PA004609. doi: 10.1029/2023PA004609 . ISSN   2572-4525.
  11. ↑ Eberle, Jaelyn J.; Storer, John E. (1999). "Northernmost Record of Brontotheres, Axel Heiberg Island, Canada: Implications for Age of the Buchanan Lake Formation and Brontothere Paleobiology". Journal of Paleontology. 73 (5): 979–983. ISSN   0022-3360.
  12. ↑ Eberle, Jaelyn J. (2005-11-10). "A new 'tapir' from Ellesmere Island, Arctic Canada — Implications for northern high latitude palaeobiogeography and tapir palaeobiology" . Palaeogeography, Palaeoclimatology, Palaeoecology. 227 (4): 311–322. doi:10.1016/j.palaeo.2005.06.008. ISSN   0031-0182.


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