Abstract
OAE2 and the eastern extent of the Western Interior Seaway in Iowa
Abstracts with programs - Geological Society of America, Vol.55(6)
Geological Society of America, 2023 annual meeting; GSA connects 2023
10/2023
DOI: 10.1130/abs/2023AM-395599
Abstract
The Western Interior Seaway (WIS) expanded through much of west-central North America during the Cretaceous. The majority of research on the WIS has been conducted along the axis of the basin, or on the western margin proximal to orogenic events and radioisotopically dateable volcanic materials. By comparison, only a handful of studies have focused on the eastern margin of the WIS and the true geographic extent of the seaway remains a matter of debate. Here, we produced high-resolution carbonate carbon isotope chemostratigraphy from a core drilled in Sioux County, Iowa, that includes Oceanic Anoxic Event 2 (OAE2) in clearly marine, carbonate-dominated strata from western Iowa. Additional cores in Iowa also preserve the Greenhorn Formation in marine strata and demonstrate that the WIS extended at least well into central Iowa during the maximum transgression during the Late Cretaceous.
Details
- Title: Subtitle
- OAE2 and the eastern extent of the Western Interior Seaway in Iowa
- Creators
- Megan Kroeger - University of Iowa, Department of Earth and Environmental Sciences Iowa City, IA USA United StatesBradley Cramer - University of Iowa
- Resource Type
- Abstract
- Publication Details
- Abstracts with programs - Geological Society of America, Vol.55(6)
- Conference
- Geological Society of America, 2023 annual meeting; GSA connects 2023
- Publisher
- Geological Society of America (GSA)
- DOI
- 10.1130/abs/2023AM-395599
- ISSN
- 0016-7592
- Alternative title
- Geological Society of America, 2023 annual meeting; GSA connects 2023
- Language
- English
- Date published
- 10/2023
- Academic Unit
- Earth and Environmental Sciences; International Programs
- Record Identifier
- 9984628219802771
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