Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31982.1 |
Local versus seaway-wide trends in deoxygenation in the Late Cretaceous Western Interior Seaway | |
Tessin, Allyson1,2; Schroder-Adams, Claudia3; Elderbak, Khalifa4; Sheldon, Nathan D.1; Hendy, Ingrid1 | |
2019-05-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:1017-1030 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England; Canada |
英文摘要 | The sedimentary record of the Late Cretaceous North American Western Interior Seaway (WIS) is characterized by periods of enhanced organic carbon burial, including an interval that has been identified as Oceanic Anoxic Event (OAE) 3. The timing and duration of this event has proved difficult to constrain, calling into question whether a widespread organic carbon burial event actually occurred. In order to evaluate the nature of OAE 3 better, different localities are studied within the WIS to investigate whether a single anoxic, carbon burial event exists within Upper Cretaceous strata above the global OAE 2. New trace metal and Fe speciation records from the Niobrara Formation within the Sweetgrass Arch region in southern Alberta, Canada, highlight that there were several intervals of deoxygenation. Comparison of these new results with similar records from the southern portion of the seaway (Colorado, USA), allows seaway wide versus local changes in biogeochemical cycling to be differentiated. These results suggest that while enhanced organic carbon burial is favored in the WIS during the Niobrara transgression, there is no evidence for a single, discrete, seaway-wide anoxic event during the Coniacian-Santonian. In the Sweetgrass Arch region, enhanced organic carbon accumulation and the development of anoxia is controlled by the incursion of Tethyan waters into the region and may have been influenced by significant nutrient addition from ash deposition. A sea level control on the incursion of southern sourced water masses and, subsequent deoxygenation and enhanced organic carbon burial in the WIS, may explain why "OAE 3" is only identified in shallow and restricted marine environments that would be sensitive to changes in sea level. A combination of local and eustatic controls on sea level may also explain the diachronous timing of enhanced organic carbon burial in different regions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466511700016 |
WOS关键词 | OCEANIC ANOXIC EVENT ; ORGANIC-CARBON ; OAE 3 ; SOUTHWESTERN SASKATCHEWAN ; EUXINIC SEDIMENTS ; SOUTHERN ALBERTA ; TRACE-METALS ; IRON ; STRATIGRAPHY ; CIRCULATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182892 |
专题 | 地球科学 |
作者单位 | 1.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 2.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 3.Carleton Univ, Dept Earth Sci, Ottawa, ON K1S 5B6, Canada; 4.ALS Oil & Gas, Houston, TX 77040 USA |
推荐引用方式 GB/T 7714 | Tessin, Allyson,Schroder-Adams, Claudia,Elderbak, Khalifa,et al. Local versus seaway-wide trends in deoxygenation in the Late Cretaceous Western Interior Seaway[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:1017-1030. |
APA | Tessin, Allyson,Schroder-Adams, Claudia,Elderbak, Khalifa,Sheldon, Nathan D.,&Hendy, Ingrid.(2019).Local versus seaway-wide trends in deoxygenation in the Late Cretaceous Western Interior Seaway.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,1017-1030. |
MLA | Tessin, Allyson,et al."Local versus seaway-wide trends in deoxygenation in the Late Cretaceous Western Interior Seaway".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):1017-1030. |
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