Dating fault gouges

Králík, Martin; Klima, Kurt; Riedmüller, Gunter

doi:10.1038/327315a0

Cited by 87 publications

(59 citation statements)

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“…Thus, formation time of the authigenic illite in a fault gouge can be correlated with periods of motion along the fault (e.g. Lyons and Snellenburg 1971;Kralik et al 1987).…”

Section: Mineralogy and K-ar Dating Of Fault Gougesmentioning

confidence: 99%

Exhumation and uplift of the Sierras Pampeanas: preliminary implications from K–Ar fault gouge dating and low-T thermochronology in the Sierra de Comechingones (Argentina)

Löbens

Bense

Wemmer

et al. 2010

Int J Earth Sci (Geol Rundsch)

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The Sierras Pampeanas in central and northwestern Argentina constitute a distinct morphotectonic feature between 27°S and 33°S. The last stage of uplift and deformation in this area are interpreted to be closely related to the Andean flat-slab subduction of the Nazca plate beneath the South American plate. K-Ar fault gouge dating and low-temperature thermochronology along two transects within the Sierra de Comechingones reveal a minimum age for the onset of brittle deformation about 340 Ma, very low exhumation rates since Late Paleozoic time, as well as a total exhumation of about 2.3 km since the Late Cretaceous. New Ar-Ar ages (7.54-1.91 Ma) of volcanic rocks from the San Luis volcanic belt support the eastward propagation of the flat-slab magmatic front, confirming the onset of flat-slab related deformation in this region at 11.2 Ma. Although low-temperature thermochronology does not clearly constrain the signal of the Andean uplift, it is understood that the current structural relief related to the Comechingones range has been achieved after the exhumation of both fault walls (circa 80-70 Ma).

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“…Thus, formation time of the authigenic illite in a fault gouge can be correlated with periods of motion along the fault (e.g. Lyons and Snellenburg 1971;Kralik et al 1987).…”

Section: Mineralogy and K-ar Dating Of Fault Gougesmentioning

confidence: 99%

Exhumation and uplift of the Sierras Pampeanas: preliminary implications from K–Ar fault gouge dating and low-T thermochronology in the Sierra de Comechingones (Argentina)

Löbens

Bense

Wemmer

et al. 2010

Int J Earth Sci (Geol Rundsch)

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“…Hoke (1990); (6) Dunkl et al (2003); (7) Wölfler et al (2008); (8) Staufenberg (1987); (9) Lambert (1970). For closure temperature ranges we adopted the following values: K/Ar muscovite: ~430-375°C (Hames and Bowring, 1994;Kirschner et al, 1996); Ar/Ar muscovite: ~450-350°C (Hames and Bowring, 1994;Kirschner et al, 1996;Lips et al, 1996;Harrison et al, 2009); Ar/Ar biotite: 400-300°C (Grove and Harrison, 1996;Villa, 1998); zircon fission track: 300-200°C (Wagner and van den haute, 1992); apatite fission track: 120-60°C (Green et al, 1986 Ma, respectively (Kralik et al, 1987 Scharf et al, 2013;Wölfler et al, 2008Wölfler et al, , 2011Wölfler et al, , 2012 Selverstone, 1988;Genser and Neubauer, 1989;Fügen-schuh et al, 1997;Scharf et al, 2013;Schmid et al, 2013). The southern boundary of the Eastern Alps is represented by the Periadriatic fault system, separating the Austroalpine and Southalpine units (Fig.…”

Section: Introductionmentioning

confidence: 99%

Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry

Woelfler¹,

Dekant²,

Frisch³

et al. 2015

AJES

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The cooling history of the Polinik and Kreuzeck Blocks of the Austroalpine units to the southeast of the Tauern Window are reexamined in the light of new mica Ar/Ar-, zircon fission track and apatite fission track data. Our new data demonstrate that the two blocks experienced a significantly different thermal evolution during Mesozoic-Cenozoic times: The Polinik Block revealed Late Cretaceous Ar/Ar ages (87.2-81.6 Ma), which reflect cooling subsequent to the thermal peak of Eo-Alpine metamorphism. The

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“…For faults that underlie sediments of known age, trenching of the fault scarp is commonly done to obtain abundant knowledge of paleoseismic records [e.g., McCalpin, 2009]. However, seismological investigations of faults found where basement rocks are exposed at the surface without sedimentary covers, as in mountainous regions, remain problematic, although several methods have been proposed [Kanaori et al, 1980;Ikeya et al, 1982;Kanaori, 1983;Fukuchi et al, 1986;Kralik et al, 1987;Zwingmann and Mancktelow, 2004].…”

Section: Introductionmentioning

confidence: 99%

Microfractures within the fault damage zone record the history of fault activity

Mizoguchi

Ueta

2013

Geophysical Research Letters

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For faults without sedimentary covers, there is no robust method to obtain paleoseismic data that is crucial for the prediction of future damaging earthquake events. Sudden failure along faults during earthquakes induces off‐fault damage surrounding such basement faults. We showed that the Quaternary‐active fault has the damage zone characterized by a fracture density that decays exponentially with distance from the fault for both healed and open microfractures. In contrast, Quaternary‐inactive faults contain only healed microfracture damage zone. Cross‐cutting relationships between microfractures and a minimum healing temperature of ~100°C suggest that healed microfractures formed before, and at deeper levels, than did unhealed microfractures. The damage zone defined by open microfractures reflects the recent fault movement during exhumation, associated with erosion and regional uplift, from the maximum depth at which microfractures may remain unhealed. Microfracture analysis can therefore be used to examine the history of basement fault activity.

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Dating fault gouges

Cited by 87 publications

References 0 publications

Exhumation and uplift of the Sierras Pampeanas: preliminary implications from K–Ar fault gouge dating and low-T thermochronology in the Sierra de Comechingones (Argentina)

Exhumation and uplift of the Sierras Pampeanas: preliminary implications from K–Ar fault gouge dating and low-T thermochronology in the Sierra de Comechingones (Argentina)

Cretaceous to Miocene cooling of Austroalpine units southeast of the Tauern Window (Eastern Alps) constrained by multi-system thermochronometry

Microfractures within the fault damage zone record the history of fault activity

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