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DOI | 10.1306/11151817405 |
Upper Jurassic structure and evolution of the Yucatán and Campeche subbasins, southern Gulf of Mexico | |
Hudec M.R.; Norton I.O. | |
发表日期 | 2019 |
ISSN | 0149-1423 |
卷号 | 103期号:5 |
英文摘要 | The Isthmian salt basin in the southern Gulf of Mexico can be divided into the Yucatán and Campeche subbasins, separated by a base-salt high near the nose of the Yucatán platform. Despite their proximity, these two subbasins experienced radically different histories in the period immediately following salt deposition. Portions of the Yucatán subbasin are characterized by large-scale (locally as much as 60 km [37 mi]) downdip translation of salt and suprasalt sediments during the Late Jurassic. This translation produced a major detached extensional province at the updip end of the basin, which is not compensated by observed shortening downdip. We interpret this history to be a result of unconfined seaward flow of salt and its cover during basin opening, a process mirrored on the conjugate Florida margin. The Campeche subbasin, in contrast, shows no evidence of significant Late Jurassic translation detached on salt. No large-scale extensional or contractional provinces of Mesozoic age are evident, although some minor translation did occur. We suggest that salt in the Campeche subbasin was confined at its seaward end, which prevented the seaward salt flow experienced in the Yucatán subbasin. Furthermore, salt at the seaward end of the Campeche subbasin lies 2–3 km (1–2 mi) above oceanic crust, in contrast to salt lying on crust whose top sits at or below the level of oceanic crust at the seaward ends of the Tamaulipas, Yucatán, and Florida margins. The Campeche subbasin thus appears to have been perched relative to other parts of the Gulf of Mexico. Copyright ©2019. The American Association of Petroleum Geologists. All rights reserved. |
语种 | 英语 |
scopus关键词 | Florida; Gulf of Mexico; Jurassic; Late Jurassic; Mesozoic; Oceanic crust; Salt deposition; Subbasins; crustal evolution; Jurassic; Mesozoic; oceanic crust; Atlantic Ocean; Bay of Campeche; Campeche; Florida [United States]; Gulf of Mexico; Gulf of Mexico; Mexico [North America]; Tamaulipas; United States; Yucatan |
来源期刊 | AAPG Bulletin |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/125013 |
作者单位 | Bureau of Economic Geology, University of Texas at Austin, Austin, TX, United States; Institute for Geophysics, University of Texas at Austin, Austin, TX, United States |
推荐引用方式 GB/T 7714 | Hudec M.R.,Norton I.O.. Upper Jurassic structure and evolution of the Yucatán and Campeche subbasins, southern Gulf of Mexico[J],2019,103(5). |
APA | Hudec M.R.,&Norton I.O..(2019).Upper Jurassic structure and evolution of the Yucatán and Campeche subbasins, southern Gulf of Mexico.AAPG Bulletin,103(5). |
MLA | Hudec M.R.,et al."Upper Jurassic structure and evolution of the Yucatán and Campeche subbasins, southern Gulf of Mexico".AAPG Bulletin 103.5(2019). |
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