Supplemental Material: The 180-km-long Meers-Willow Fault System in the Southern Oklahoma Aulacogen: A potential U.S. mid-continent seismic hazard

Chase, Brandon; al., et

doi:10.1130/gsab.s.19420028.v1

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“…The kinematics of major structures in the SOTS have been described as consistent with oblique convergence; the general consensus is that the strike-slip element of major fault zones (with the exception of the Nemaha fault zone) was left lateral (e.g., Brewer et al, 1983;Chase, 2019;Donovan, 1982;Granath, 1989;Harding et al, 1983;Lemizski and Brown, 1988;McConnell, 1989;Perry, 1989;Turko and Mitra, 2021b 2).…”

Section: Sots Kinematicsmentioning

confidence: 99%

Late Paleozoic Evolution of the Anadarko Basin: Implications for Laurentian Tectonics and the Assembly of Pangea

et al. 2022

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The assembly of supercontinent Pangea was completed by middle Permian with the closure of the Rheic Ocean along the Appalachian-Ouachita-Marathon belt on the eastern and southeastern margin (current directions are used throughout this paper) of the Laurentian continent (Figures 1a and 1b;Hatcher et al., 2010;Scotese, 1984). Diachronous collision occurred in the southern Alleghanian orogen during early Carboniferous, in the Ouachita fold and thrust belt during Late Mississippian to Pennsylvanian and terminated in the Marathon fold and thrust belt during Late Pennsylvanian to Cisuralian (formerly Early Permian) time (Hale-Erlich & Coleman, 1993;Thomas et al., 2004;Viele and Thomas, 1989). Late Paleozoic compressional belts are present on all sides of the southern Laurentian continent (e.g., Alleghanian, Antler, Ouachita-Marathon, and Sonoran belts in Figure 1c), as are widespread intraplate basement uplifts (e.g., Ancestral Rocky Mountains, Figure 1c).Numerous models for transfer of compressional stress from Laurentian margins to the plate interior have been proposed. Previous workers have attributed intraplate deformation of southeastern Laurentia to continental collision with Gondwana and peri-Gondwanan terranes (Dickerson, 2003;Graham et al., 1975); the effects of diachronous collision along the irregular southeastern Laurentian margin (Dickinson & Lawton, 2003;Kluth & Coney, 1981); flat-slab subduction along the Sonora margin (Ye et al., 1996); reactivation of pre-existing structures by collision along the Ouachita-Marathon and Antler orogenic belts (Marshak et al., 2003); and combined compressional forces from the Ouachita-Marathon, Sonora, and Antler orogenic belts (Leary et al., 2017;Sweet et al., 2021). Consensus has not emerged about what drove late Paleozoic Laurentian tectonics, in large part because of poor exposure of late Paleozoic faults in southeastern Laurentia.During Carboniferous time, a complex fault system developed along lithospheric weaknesses inherited from Mesoproterozoic weaknesses of the

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Section: Sots Kinematicsmentioning

confidence: 99%

Late Paleozoic Evolution of the Anadarko Basin: Implications for Laurentian Tectonics and the Assembly of Pangea

et al. 2022

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Supplemental Material: The 180-km-long Meers-Willow Fault System in the Southern Oklahoma Aulacogen: A potential U.S. mid-continent seismic hazard

Abstract: Additional data processing, notes on the aeromagnetic dataset, notes on the additional datasets, Figures S1–S4, and Tables S1 and S2.

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Late Paleozoic Evolution of the Anadarko Basin: Implications for Laurentian Tectonics and the Assembly of Pangea

Late Paleozoic Evolution of the Anadarko Basin: Implications for Laurentian Tectonics and the Assembly of Pangea

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