RT journal article
T1 Lithospheric contraction concentric to Tharsis: 3D structural modeling of large thrust faults between Thaumasia highlands and Aonia Terra, Mars
A1 Herrero Gil, Andrea
A1 Egea González, María Isabel
A1 Jiménez Díaz, Alberto
A1 Rivas Dorado, Samuel
A1 Parro, Laura
A1 Fernández, Carlos
A1 Ruiz, Javier
A1 Romeo, Ignacio
A2 Física Aplicada
K1 3D structural modeling
K1 Mars
K1 Lobate scarp
K1 Thrust fault
K1 Tharsis
AB Large thrust faults on Mars are caused by lithospheric planetary contraction. The geometry of these faults is linked with the mechanical behavior of the lithosphere. Tharsis, the largest volcano-tectonic province on Mars, controls the global tectonic pattern of the planet. Here, we present a study of five large thrust faults concentric to Tharsis, located between the Thaumasia Highlands and the Argyre impact basin. We applied a 3D structural modeling, using a combination of fault-parallel flow and trishear algorithms to estimate the geometry and kinematics of the faults at depth. The modeled faults show an upper planar part dipping 33◦ to 40◦, rooting with a listric geometry into horizontal levels at 13–27 km depth, with fault slips of 801–3366 m. The general out-ofTharsis vergence, the listric fault geometries and the deepening of the depth of faulting toward Thaumasia outline an incipient thrust wedge architecture. Assuming that the largest faults rooted at the Brittle-DuctileTransition, we calculate a heat flow at the time of faulting of 24–54 mW m− 2. The obtained strength envelopes for dry and wet conditions show that all the strength of the lithosphere was located in the upper half of the crust.
PB Elsevier
SN 0191-8141
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32176
UL http://hdl.handle.net/10498/32176
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026