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Numerical paleoceanographic study of the Early Jurassic Transcontinental Laurasian Seaway
Open accessAbstract
The forces governing marine circulation of a meridional transcontinental seaway is explored with the Princeton Ocean Model. The Jurassic Laurasian Seaway, which connected the low‐latitude Tethys Ocean with the Arctic Sea is modeled quantitatively. The global ocean is found to have a profound influence on seaway dynamics. A north‐south density difference and hence sea level difference of the global ocean was probably the main factor in forcing the seaway flow. When the Tethys waters were the denser water, the net seaway flow was southward, and conversely, it was northward for denser Arctic waters. Marine bioprovincial boundaries and sediment data indicate that the seaway probably was dominated by Boreal faunal groups and reduced salinities several times in the Jurassic. The model results suggest that this can be explained by southward flowing seaway currents, which may have been related to an oceanic thermohaline circulation where no northern high‐latitude deep convection occurred.
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During the Jurassic, there were times when southward-flowing currents dominated the Laurasian Seaway and others when northward currents dominated.
“During the Jurassic, lithofacies and palaeobiogeographic studies suggest there were times when southward-flowing currents (e.g. Boreal down to the Tethys) dominated the seaway, and others when northward currents dominated (summarised in Bjerrum et al., 2001).”
From Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry (2020) · cites this paper as Bjerrum et al., 2001
The Hebrides Basin was part of the Laurasian Seaway, which connected the mid-low latitude Tethys Ocean to the northern high latitude Boreal Ocean.
“The Hebrides Basin was, in turn, part of the 'Laurasian Seaway', which connected the mid-low latitude Tethys Ocean to the northern high latitude Boreal Ocean (Hesselbo and Coe, 2000; Bjerrum et al., 2001).”
From Unravelling Middle to Late Jurassic palaeoceanographic and palaeoclimatic signals in the Hebrides Basin using belemnite clumped isotope thermometry (2020) · cites this paper as Bjerrum et al., 2001
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Cited by
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Jurassic climate mode governed by ocean gateway
Korte, C., Hesselbo, S. P., Ullmann, C. V., Dietl, G., Ruhl, M., Schweigert, G., & Thibault, N. (2015) · Nature Communications · doi:10.1038/ncomms10015 · Cited by 311
Dera, G., Prunier, J., Smith, P. L., Haggart, J. W., Popov, E., Guzhov, A., Rogov, M., Delsate, D., Thies, D., Cuny, G., et al. (2015) · Gondwana Research · doi:10.1016/j.gr.2014.02.006 · Cited by 85
Fernandez, A., Korte, C., Ullmann, C. V., Looser, N., Wohlwend, S., & Bernasconi, S. M. (2021) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2020.10.005 · Cited by 50
Metadata
- Authors
- Bjerrum, C. J., Surlyk, F., Callomon, J. H., & Slingerland, R. L.
- Venue
- Paleoceanography
- Publisher
- American Geophysical Union (AGU)
- Published
- 2001-08
- Volume
- 16
- Issue
- 4
- Pages
- 390-404
- ISSN
- 0883-8305 (ISSN-L)
- 1944-9186
- OpenAlex
- W2007180063
- Cited by
- 165
- References
- 0
- Citations by year
- 2026: 5 · 2025: 10 · 2024: 8 · 2023: 17 · 2022: 8 · 2021: 10 · 2020: 15 · 2019: 12 · 2018: 8 · 2017: 7 · 2016: 5 · 2015: 7 · 2014: 7 · 2013: 1 · 2012: 4
- FWCI
- 2.29
- Type
- journal article
- Language
- en
- Open access
- green
- discovery.ucl.ac.uk
- Locations
- Paleoceanography (publishedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
- Keywords
- Lower Jurassic, Tethys, Arctic waters, thermohaline circulation, sea level difference, reduced salinity, Princeton Ocean Model
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