GSTDTAP  > 地球科学
DOI10.1306/11151817405
Upper Jurassic structure and evolution of the Yucatan and Campeche subbasins, southern Gulf of Mexico
Hudec, Michael R.1; Norton, Ian O.2
2019-05-01
发表期刊AAPG BULLETIN
ISSN0149-1423
EISSN1558-9153
出版年2019
卷号103期号:5页码:1133-1151
文章类型Article
语种英语
国家USA
英文摘要

The Isthmian salt basin in the southern Gulf of Mexico can be divided into the Yucatan and Campeche subbasins, separated by a base-salt high near the nose of the Yucatan platform. Despite their proximity, these two subbasins experienced radically different histories in the period immediately following salt deposition.


Portions of the Yucatan subbasin are characterized by larges-cale (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 larges-cale 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 Yucatan 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, Yucatan, and Florida margins. The Campeche subbasin thus appears to have been perched relative to other parts of the Gulf of Mexico.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000467904600007
WOS关键词TECTONIC EVOLUTION ; HEAT-FLOW ; MARGIN ; RECONSTRUCTION ; ORIGIN ; CRUST ; GEOMETRY ; DEPTH ; MODEL ; BAY
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/182556
专题地球科学
作者单位1.Univ Texas Austin, Bur Econ Geol, Austin, TX 78712 USA;
2.Univ Texas Austin, Inst Geophys, Austin, TX USA
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Hudec, Michael R.,Norton, Ian O.. Upper Jurassic structure and evolution of the Yucatan and Campeche subbasins, southern Gulf of Mexico[J]. AAPG BULLETIN,2019,103(5):1133-1151.
APA Hudec, Michael R.,&Norton, Ian O..(2019).Upper Jurassic structure and evolution of the Yucatan and Campeche subbasins, southern Gulf of Mexico.AAPG BULLETIN,103(5),1133-1151.
MLA Hudec, Michael R.,et al."Upper Jurassic structure and evolution of the Yucatan and Campeche subbasins, southern Gulf of Mexico".AAPG BULLETIN 103.5(2019):1133-1151.
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