Ibex Hollow Tuff from ca. 12 Ma supereruption, southern Idaho, identified across North America, eastern Pacific Ocean, and Gulf of Mexico Article Swipe
Andrei M. Sarna‐Wojcicki
,
Jefferey R. Knott
,
John A. Westgate
,
James R. Budahn
,
John A. Barron
,
Colin J. Bray
,
Greg A. Ludvigson
,
C. Meyer
,
David M. Miller
,
Rick E. Otto
,
Nicholas J.G. Pearce
,
Charles C. Smith
,
Laura C. Walkup
,
Elmira Wan
,
James C. Yount
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1130/ges02593.1
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1130/ges02593.1
The Ibex Hollow Tuff, 12.08 ± 0.03 Ma (40Ar/39Ar), is a widespread tephra layer erupted from the Bruneau-Jarbidge volcanic field of southern Idaho. Tephra from this eruption was deposited across much of western and central North America and adjacent ocean areas. We identified the Ibex Hollow Tuff at Trapper Creek, Idaho, near its eruption site, and at 15 distal sites, from the Pacific Ocean to the Gulf of Mexico, by the chemical composition of its glass shards, using electron-microprobe analysis, instrumental neutron activation analysis, and laser-ablation–inductively coupled plasma–mass spectrometry. By these methods, we distinguished the Ibex Hollow Tuff from overlying and underlying tephra layers near its source and at distal sites. Fluvially reworked Ibex Hollow Tuff ash was transported by the ancestral Mississippi River drainage from the interior of the North American continent to the Gulf of Mexico, where it is present within an ~50-m-thick deposit in marine sediments in the subsurface. The minimum fallout area covered by the ash is ~2.7 million km2, with a minimum volume of ~800 km3, and potential dispersal farther to the north and northeast. The areal distribution for the Ibex Hollow Tuff is similar to that of the Lava Creek B (0.63 Ma) supereruption. The Ibex Hollow Tuff represents a unique chronostratigraphic marker allowing a synoptic view of paleoenvironments at a virtual moment in time across a large terrestrial and marine region. The Ibex Hollow Tuff is also an important marker bed for North American Land Mammal Ages, and it coincides with climatic cooling in the middle to late Miocene documented in marine cores.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1130/ges02593.1
- https://pubs.geoscienceworld.org/gsa/geosphere/article-pdf/doi/10.1130/GES02593.1/5930945/ges02593.pdf
- OA Status
- gold
- Cited By
- 4
- References
- 70
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4385059582
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4385059582Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1130/ges02593.1Digital Object Identifier
- Title
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Ibex Hollow Tuff from ca. 12 Ma supereruption, southern Idaho, identified across North America, eastern Pacific Ocean, and Gulf of MexicoWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
-
2023-07-20Full publication date if available
- Authors
-
Andrei M. Sarna‐Wojcicki, Jefferey R. Knott, John A. Westgate, James R. Budahn, John A. Barron, Colin J. Bray, Greg A. Ludvigson, C. Meyer, David M. Miller, Rick E. Otto, Nicholas J.G. Pearce, Charles C. Smith, Laura C. Walkup, Elmira Wan, James C. YountList of authors in order
- Landing page
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https://doi.org/10.1130/ges02593.1Publisher landing page
- PDF URL
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https://pubs.geoscienceworld.org/gsa/geosphere/article-pdf/doi/10.1130/GES02593.1/5930945/ges02593.pdfDirect link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://pubs.geoscienceworld.org/gsa/geosphere/article-pdf/doi/10.1130/GES02593.1/5930945/ges02593.pdfDirect OA link when available
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Tephra, Geology, Lava, Volcano, Geochemistry, Paleontology, Oceanography, GeomorphologyTop concepts (fields/topics) attached by OpenAlex
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4Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1, 2024: 3Per-year citation counts (last 5 years)
- References (count)
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70Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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