GSTDTAP  > 地球科学
DOI10.1130/B35283.1
Controls on the evolution of passive-margin salt basins: Structure and evolution of the Salina del Bravo region, northeastern Mexico
Hudec, Michael R.1; Dooley, Tim P.1; Peel, Frank J.1; Soto, Juan, I2,3
2020-05-01
发表期刊GEOLOGICAL SOCIETY OF AMERICA BULLETIN
ISSN0016-7606
EISSN1943-2674
出版年2020
卷号132期号:5-6页码:997-1012
文章类型Article
语种英语
国家USA; Spain
英文摘要

Passive-margin salt basins tend to be much more deformed than their nonsalt equivalents, but they are by no means all the same. We used seismic data to study the Salina del Bravo region, northeast Mexico, to investigate the ways in which margin configuration and postsalt uplift history can influence passive-margin salt tectonics.


The Salina del Bravo area contains four main structural systems, all of which trend NNE across the entire region. These structures are the Bravo trough, Sigsbee salt canopy, Perdido fold-and-thrust belt, and BAHA high. Gravity-driven deformation did not begin until more than 130 m.y. after salt deposition, because of buttressing against the BAHA high. We suggest that deformation was ultimately triggered in the Cenozoic by Cordilleran uplift that tilted the margin seaward and created a major sediment source terrane. Sediments shed from the uplift expelled salt seaward to form the Sigsbee canopy. At the same time, tilted and loaded sediments were translated seaward on the Louann salt until they were buttressed against the BAHA high, forming the Perdido fold-and-thrust belt. A physical model was built to test this hypothesis. The model was able to reproduce most of the major structures in the region, suggesting that the hypothesis is reasonable.


The Salina del Bravo region shows how a downdip buttress can inhibit gravity-driven salt deformation in passive-margin salt basins. Furthermore, the area also shows the importance of postsalt uplift, which can destabilize a margin through a combination of tilting and sedimentation.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000530917400008
WOS关键词GULF-OF-MEXICO ; PERDIDO FOLD BELT ; DEEP-WATER ; BURGOS BASIN ; THRUST BELT ; TECTONICS ; DEFORMATION ; HISTORY ; FRAMEWORK ; LARAMIDE
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/279474
专题地球科学
作者单位1.Univ Texas Austin, Bur Econ Geol, Box 10, Austin, TX 78713 USA;
2.Univ Granada, Dept Geodinam, Ave Fuente Nueva S-N, Granada 18071, Spain;
3.Univ Granada, CSIC UGR, Inst Andaluz Ciencias Tierra, Ave Fuente Nueva S-N, Granada 18071, Spain
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GB/T 7714
Hudec, Michael R.,Dooley, Tim P.,Peel, Frank J.,et al. Controls on the evolution of passive-margin salt basins: Structure and evolution of the Salina del Bravo region, northeastern Mexico[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2020,132(5-6):997-1012.
APA Hudec, Michael R.,Dooley, Tim P.,Peel, Frank J.,&Soto, Juan, I.(2020).Controls on the evolution of passive-margin salt basins: Structure and evolution of the Salina del Bravo region, northeastern Mexico.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,132(5-6),997-1012.
MLA Hudec, Michael R.,et al."Controls on the evolution of passive-margin salt basins: Structure and evolution of the Salina del Bravo region, northeastern Mexico".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 132.5-6(2020):997-1012.
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