Abstract
We apply the stylolite roughness inversion technique on sedimentary, bedding-parallel stylolites hosted in the Paleozoic carbonates of the Bighorn and Madison formations cropping out in the Bighorn Basin, Wyoming, USA. The inversion technique applied to bedding-parallel stylolites allows determination of the absolute magnitude of the vertical stress experienced at the time dissolution stops along the pressure-solution planes. At the basin scale, reconstructed vertical stress magnitudes range from 19 +/- 2 MPa to 35 +/- 4 MPa in the Bighorn Fm, and from 12 +/- 2 MPa to 37 +/- 4 MPa in the Madison Fm. Once converted into depth and compared with up-to-date basin models of burial and contractional history, the dataset highlights that bedding-parallel stylolites accommodated compaction from ca. 220 Ma until ca. 90 Ma, i.e. until stress build-up related to the Sevier contraction made the maximum horizontal principal stress high enough to overcome the vertical principal stress. This study is key to illustrate how stylolites can be used to consistently access paleoburial and to unravel both stress evolution and timing in foreland settings, and indicates that pressure-solution remains active throughout the carbonate deposition history.
Original language | English |
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Article number | 104061 |
Number of pages | 10 |
Journal | Journal of Structural Geology |
Volume | 136 |
Early online date | 13 Apr 2020 |
DOIs | |
Publication status | Published - 31 Jul 2020 |
Bibliographical note
The authors would like to thank the two anonymous reviewers for their constructive comments on the manuscript and the journal Editor-in-Chief Cees Passchier for editorial handling. NB is funded through the ISITE program E2S, supported by ANR PIA and Région Nouvelle-Aquitaine. This work was funded by Sorbonne Université (Paris) through research agreement C14313 and by the European Union Seventh Framework Programme for research, technological development and demonstration under grant agreement n°316889.Keywords
- SHEEP MOUNTAIN ANTICLINE
- PORE-FLUID PRESSURE
- FOLD-THRUST BELT
- SEDIMENTARY BASINS
- TECTONIC EVOLUTION
- SOLUTION CLEAVAGE
- LARAMIDE OROGENY
- BURIAL HISTORY
- CALCITE
- DEFORMATION