Thermal annealing of fission tracks in apatite 4. Quantitative modelling techniques and extension to geological timescales

Green, P.F.; Duddy, Ian R.; Laslett, G. M.; Hegarty, Kerry A.; Gleadow, A. J. W.; Lovering, J. F.

doi:10.1016/0168-9622(89)90018-3

Cited by 515 publications

(385 citation statements)

References 11 publications

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“…The mean length and distribution of confined tracks in apatite provide important additional information on the cooling history below ~125°C (e.g., Gleadow et al, 1986;Green et al, 1989). In general, the measured apatite fission track length distributions have long mean track lengths (>14.0 μm) and standard deviations under 1.8 μm (apatite samples from Río Blanco, Extravío, Alfalfalito, Cruz de Piedra, Río Pangal, Estero Crucero, Santa Rosa de Rengo, and Nacientes Río Cortaderal plutons; Fig.…”

Section: Resultsmentioning

confidence: 99%

Fission track thermochronology of Neogene plutons in the Principal Andean Cordillera of central Chile (33-35°S): Implications for tectonic evolution and porphyry Cu-Mo mineralization

Maksaev

Munizaga

Zentilli

et al. 2009

AndGeo

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AbStRACt. Apatite fission track data for Miocene plutons of the western slope of the Principal Andean Cordillera in central Chile (33-35°S) define a distinct episode of enhanced crustal cooling through the temperature range of the apatite partial annealing zone (~125-60°C) from about 6 to 3 Ma. This cooling episode is compatible with accelerated exhumation of the plutons at the time of Pliocene compressive tectonism, and mass wasting on the western slope of the Principal Andean Cordillera in central Chile. The timing coincides with the southward migration of the subducting Juan Fernández Ridge and the development of progressive subduction flattening northward of 33°S. It also corresponds to the time of active magmatic-hydrothermal processes and rapid unroofing of the world class Río Blanco-Los Bronces and El Teniente porphyry Cu-Mo deposits. Zircon fission track ages coincide with previous 40 Ar/ 39 Ar dates of the intrusions, and with some of the apatite fission track ages, being coherent with igneous-linked, rapid cooling following magmatic intrusion. The thermochronologic data are consistent with a maximum of about 8 km for Neogene exhumation of the plutons.

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Section: Resultsmentioning

confidence: 99%

Fission track thermochronology of Neogene plutons in the Principal Andean Cordillera of central Chile (33-35°S): Implications for tectonic evolution and porphyry Cu-Mo mineralization

Maksaev

Munizaga

Zentilli

et al. 2009

AndGeo

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“…Chama-se Zona de Retenção Parcial e, de uma maneira geral, encontra-se em equilíbrio e a temperatura constante (Bernet 2009). No caso da apatita, a Zona de Retenção Parcial ocorre entre 60±10ºC e 110±10ºC, de forma que os traços de fissão espontâneos são acumulados e tornam-se estáveis se submetidos a temperaturas abaixo de 100ºC, na escala do tempo geológico (Naeser & Forbes 1976, Gleadow & Duddy 1981, Green et al 1989, Reiners & Ehlers 2005.…”

Section: Métodosunclassified

Exumação tectônica e reativação de paleolineamentos no Arco de Ponta Grossa: termocronologia por traços de fissão em apatitas

Franco-Magalhães

Hackspacher

Saad

2010

RBG

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“…3/ linked plate), and the low P(χ 2 ) probabilities, suggests initial cooling below 110°C followed by an extended period of thermal annealing, and a later, discrete period of accelerated cooling from a thermal maximum below 110°C (for interpretation of cooling patterns cf. Gleadow et al, 1986Gleadow et al, , 2002Green et al, 1989). Thermal history modeling of the Mawson Escarpment AFT data (modeling details in Footnote 3 below Table 1) indeed reveals concordant cooling paths for all samples, comprising two cooling stages.…”

Section: Apatite Fission Track Results and Thermal History Reconstrucmentioning

confidence: 99%

Denudation and uplift of the Mawson Escarpment (eastern Lambert Graben, Antarctica) as indicated by apatite fission track data and geomorphological observation

Lisker

Gibson²,

Wilson³

et al. 2007

Open-File Report

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Analysis of three vertical profiles from the southern Mawson Escarpment (Lambert Graben) reveals apatite fission track (AFT) ages ranging from 102±20 to 287±23 Ma and mean lengths of 12.2 to 13.0 µm. Quantitative thermal histories derived from these data consistently indicate onset of slow cooling below 110°C began sometime prior to 300 Ma, and a second stage of rapid cooling from paleotemperatures up to ≤100°C to surface temperatures occurred in the Late Cretaceous -Paleocene. The first cooling phase refers to Carboniferous -Jurassic basement denudation up to 5 km associated with the initial rifting of the Lambert Graben. The presence of the ancient East Antarctic Erosion Surface and rapid Late Cretaceous -Paleocene cooling indicate a second denudational episode during which up to 4.5 km of sedimentary cover rocks were removed, and that is likely linked to the Cretaceous Gondwana breakup between Antarctica and India and subsequent passive continental margin formation.

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Thermal annealing of fission tracks in apatite 4. Quantitative modelling techniques and extension to geological timescales

Cited by 515 publications

References 11 publications

Fission track thermochronology of Neogene plutons in the Principal Andean Cordillera of central Chile (33-35°S): Implications for tectonic evolution and porphyry Cu-Mo mineralization

Fission track thermochronology of Neogene plutons in the Principal Andean Cordillera of central Chile (33-35°S): Implications for tectonic evolution and porphyry Cu-Mo mineralization

Exumação tectônica e reativação de paleolineamentos no Arco de Ponta Grossa: termocronologia por traços de fissão em apatitas

Denudation and uplift of the Mawson Escarpment (eastern Lambert Graben, Antarctica) as indicated by apatite fission track data and geomorphological observation

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