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Title: Evolution of salt structures, East Texas diapir province, part 2: patterns and rates of halokinesis

Abstract

The effects of salt mobilization on Aptian and younger (post-112 Ma) strata in the East Texas basin can be used to illustrate patterns of dome growth through time, and to estimate rates and amounts of salt movement. Pre-Aptian domes grew in three areas around the margin of the diapir province, apparently in pre-Aptian depocenters. Maximum dome growth along the basin axis coincide with maximum regional sedimentation there during the middle Cretaceous (Aptian, Albian, and Cenomanian). In the Late Cretaceous the sites of maximum diapirism migrated to the periphery of the diapir province. Diapirism began after pillows were erosionally breached, leading to salt extrusion and formation of peripheral sinks. The duration of pillow and diapir stages of growth was subequal, ranging from 10 to 30 Ma. Post-diapiric stage of growth continued for more than 112 Ma in some cases. Diapirs grew fastest in the Early Cretaceous, when peak growth rates ranged from 150 to 530 m/Ma (490 to 1740 ft/Ma), declining in the Early Tertiary to 10 to 60 m/Ma (30 to 200 ft/Ma). Assuming steady-state conditions over periods of 1 to 17 Ma, strain rates for the rise of the East Texas diapirs averaged 6.7 X 10/sup -16/ sec;peak grossmore » rate of growth averaged 2.3 X 10/sup -15/ sec, similar to slow orogenic rates. The evolution of East Texas salt domes essentially ended in the early Tertiary with uplift rates less than 30 m/Ma (100 ft/Ma).« less

Authors:
;
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX
OSTI Identifier:
5402190
Resource Type:
Journal Article
Journal Name:
Am. Assoc. Pet. Geol., Bull.; (United States)
Additional Journal Information:
Journal Volume: 67:8
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; SALT DEPOSITS; ORIGIN; TEXAS; SEDIMENTARY BASINS; CRETACEOUS PERIOD; GEOLOGIC HISTORY; GEOLOGIC TRAPS; TERTIARY PERIOD; CENOZOIC ERA; FEDERAL REGION VI; GEOLOGIC AGES; GEOLOGIC DEPOSITS; GEOLOGIC STRUCTURES; MESOZOIC ERA; NORTH AMERICA; USA; 580100* - Geology & Hydrology- (-1989)

Citation Formats

Seni, S J, and Jackson, M P.A. Evolution of salt structures, East Texas diapir province, part 2: patterns and rates of halokinesis. United States: N. p., 1983. Web.
Seni, S J, & Jackson, M P.A. Evolution of salt structures, East Texas diapir province, part 2: patterns and rates of halokinesis. United States.
Seni, S J, and Jackson, M P.A. 1983. "Evolution of salt structures, East Texas diapir province, part 2: patterns and rates of halokinesis". United States.
@article{osti_5402190,
title = {Evolution of salt structures, East Texas diapir province, part 2: patterns and rates of halokinesis},
author = {Seni, S J and Jackson, M P.A.},
abstractNote = {The effects of salt mobilization on Aptian and younger (post-112 Ma) strata in the East Texas basin can be used to illustrate patterns of dome growth through time, and to estimate rates and amounts of salt movement. Pre-Aptian domes grew in three areas around the margin of the diapir province, apparently in pre-Aptian depocenters. Maximum dome growth along the basin axis coincide with maximum regional sedimentation there during the middle Cretaceous (Aptian, Albian, and Cenomanian). In the Late Cretaceous the sites of maximum diapirism migrated to the periphery of the diapir province. Diapirism began after pillows were erosionally breached, leading to salt extrusion and formation of peripheral sinks. The duration of pillow and diapir stages of growth was subequal, ranging from 10 to 30 Ma. Post-diapiric stage of growth continued for more than 112 Ma in some cases. Diapirs grew fastest in the Early Cretaceous, when peak growth rates ranged from 150 to 530 m/Ma (490 to 1740 ft/Ma), declining in the Early Tertiary to 10 to 60 m/Ma (30 to 200 ft/Ma). Assuming steady-state conditions over periods of 1 to 17 Ma, strain rates for the rise of the East Texas diapirs averaged 6.7 X 10/sup -16/ sec;peak gross rate of growth averaged 2.3 X 10/sup -15/ sec, similar to slow orogenic rates. The evolution of East Texas salt domes essentially ended in the early Tertiary with uplift rates less than 30 m/Ma (100 ft/Ma).},
doi = {},
url = {https://www.osti.gov/biblio/5402190}, journal = {Am. Assoc. Pet. Geol., Bull.; (United States)},
number = ,
volume = 67:8,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 1983},
month = {Mon Aug 01 00:00:00 EDT 1983}
}