Imperial College London
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DrDylanRood

Faculty of Engineering, Department of Earth Science & Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 7461d.rood

 
 
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Location

 

4.43Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Štěpančíková:2022:10.1016/j.epsl.2022.117596,
author = {tpaníková, P and Rockwell, TK and Stemberk, J and Rhodes, EJ and Hartvich, F and Luttrell, K and Myers, M and Táboík, P and Rood, DH and Wechsler, N and Nývlt, D and Ortuño, M and Hók, J},
doi = {10.1016/j.epsl.2022.117596},
journal = {Earth and Planetary Science Letters},
pages = {1--12},
title = {Acceleration of late pleistocene activity of a central European fault driven by ice loading},
url = {http://dx.doi.org/10.1016/j.epsl.2022.117596},
volume = {591},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We studied the southern part of the NW-SE trending Sudetic Marginal fault (SMF), situated at thenortheastern limit of the Bohemian Massif in central Europe, to assess its Quaternary activity. Eighteentrenches and thirty-four electric resistivity profiles were performed at Bílá Voda to study the fault zoneand 3-dimensional distribution of a beheaded alluvial fan on the NE side of the fault. We interpret asmall drainage, located about 29–45 m to the SE of the fan apex, as the only plausible source channelimplying a similar amount of left-lateral offset. The alluvial fan deposits’ radiometric ages range betweenabout 24 and 63 ka, but postglacial deposits younger than 11 ka are not displaced, indicating that allmotion occurred in the late Pleistocene. The site lies ∼150 km south of the late Pleistocene Weichselianmaximum (∼20 ka) ice sheet front. We model the effects of the ice load on lithospheric flexure andresolved fault stresses, and show that slip on the SMF was promoted by the presence of the ice sheet,resulting in a late Pleistocene slip rate of ∼1.1+2.3/−0.6 mm/yr. As the most favorable time for glacialloading-induced slip would be during the glacial maximum between about 24 and 12 ka, it is doubtfulthat the slip rate remained constant during the entire period of activity, and if most slip occurred duringthis period, the short-term rate may have been even higher. Considering that the modern maximumprincipal stress (σ1) is oriented nearly parallel to the Sudetic Marginal fault (NNW-SSE) and is thusunfavorable for fault motion, our observations suggest that the likelihood of continued motion andearthquake production is much lower in the absence of an ice sheet.
AU  - tpaníková,P
AU  - Rockwell,TK
AU  - Stemberk,J
AU  - Rhodes,EJ
AU  - Hartvich,F
AU  - Luttrell,K
AU  - Myers,M
AU  - Táboík,P
AU  - Rood,DH
AU  - Wechsler,N
AU  - Nývlt,D
AU  - Ortuño,M
AU  - Hók,J
DO  - 10.1016/j.epsl.2022.117596
EP  - 12
PY  - 2022///
SN  - 0012-821X
SP  - 1
TI  - Acceleration of late pleistocene activity of a central European fault driven by ice loading
T2  - Earth and Planetary Science Letters
UR  - http://dx.doi.org/10.1016/j.epsl.2022.117596
UR  - https://www.sciencedirect.com/science/article/pii/S0012821X22002321?via%3Dihub
UR  - http://hdl.handle.net/10044/1/98215
VL  - 591
ER  -
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