Statistical models for mixed fission track ages

Galbraith, R. F.; Laslett, G. M.

doi:10.1016/1359-0189(93)90185-c

Cited by 799 publications

(532 citation statements)

References 16 publications

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“…The sample has a markedly younger zircon FT age than the rest of the samples of Cretaceous plutons in the Reloncaví area. The zircon FT central age of sample AA130 is subject to a large dispersion, indicating a discordant distribution in the individual FT grain ages (e.g., Galbraith and Laslett, 1993;Brandon, 2002). The sample is derived from a mapped pluton of Cretaceous age.…”

Section: Zircon and Apatite Fi Ssion-track Cooling Historiesmentioning

confidence: 99%

Cooling histories and deformation of plutonic rocks along the Liquiñe-Ofqui Fault Zone, Southern Chile (41°-42°15'S)

Adriasola

Stöckhert

2008

Rev. geol. Chile

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ABSTRACT. Structural and microstructural observations combined with apatite and zircon fi ssion-track thermochronology within two sectors of the Main Andean Range in the Los Lagos Region of Chile reveal an episodic history of intrusion and deformation in the North Patagonian Batholith (NPB). A dextral displacement of ~30 km along the Liquiñe-Ofqui fault zone (LOFZ) is inferred from the correlation of corresponding Cretaceous intrusions of the NPB across the fault zone at Reloncaví. Relative uplift of the western block in the late Miocene is indicated by apatite and zircon fi ssiontrack cooling histories. Microstructures in samples from Miocene and Cretaceous plutons along the fault zone generally indicate deformation at temperatures below ~300°C, with the exception of some samples from Cretaceous intrusions showing deformation at higher temperatures. In the Hornopirén area, signifi cant relative uplift of the eastern block is indicated by 1. the different styles of deformation observed across the fault zone, 2. kinematic analysis of a shear zone in tonalite and 3. geobarometry of contact metamorphic mineral assemblages. For the plutonic rocks in the Hornopirén area, extremely rapid cooling is indicated by thermochronometry, suggesting the activity of hydrothermal systems or thermal effects of late shallow intrusions.

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Section: Zircon and Apatite Fi Ssion-track Cooling Historiesmentioning

confidence: 99%

Cooling histories and deformation of plutonic rocks along the Liquiñe-Ofqui Fault Zone, Southern Chile (41°-42°15'S)

Adriasola

Stöckhert

2008

Rev. geol. Chile

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“…As many track lengths as possible were measured (up tõ 100), for each sample. Fission track central ages (Galbraith and Laslett, 1993) were calculated using the IUGS-recommended Zeta calibration approach (Hurford and Green, 1982;Hurford, 1990). The weighted mean zeta values for apatite used in this study are 322.1±3.6.…”

Section: Methologymentioning

confidence: 99%

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

et al. 2006

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Abstract:This study uses apatite fission track (FT) analysis to constrain the exhumation history of bedrock samples collected from the Altai Mountains in northern Xinjiang, China. Samples were collected as transects across the main structures related to Palaeozoic crustal accretion events. FT results and modeling identify three stages in sample cooling history spanning the Mesozoic and Tertiary. Stage one records rapid cooling to the low temperature part of the fission track partial annealing zone circa 70±10°C. Stage two, records a period of relative stability with little if any cooling taking place between ~ 75 Ma and ~25-20 Ma suggesting the Altai region had been reduced to an area of low relief. Support for this can be found in the adjacent Junngar Basin that received little if any sediment during this interval. Final stage cooling took place in the Miocene at an accelerated rate bringing the sampled rocks to the Earth's surface. This last stage, linked to the far field effects of the Himalayan collision, most likely generated the surface uplift and relief that define the present-day Altai Mountains.

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“…Samples yielding significantly different components are presented in Table 3. The youngest component is called the minimum age [see also Galbraith and Laslett, 1993] and the older components are ignored for interpretation.…”

Section: Because the Differential Annealing Behavior Of Apatites Is Nmentioning

confidence: 99%

Life cycle of the East Carpathian orogen: Erosion history of a doubly vergent critical wedge assessed by fission track thermochronology

Sanders¹,

Andriessen²,

Cloetingh³

1999

J. Geophys. Res.

108

133

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Statistical models for mixed fission track ages

Cited by 799 publications

References 16 publications

Cooling histories and deformation of plutonic rocks along the Liquiñe-Ofqui Fault Zone, Southern Chile (41°-42°15'S)

Cooling histories and deformation of plutonic rocks along the Liquiñe-Ofqui Fault Zone, Southern Chile (41°-42°15'S)

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

Life cycle of the East Carpathian orogen: Erosion history of a doubly vergent critical wedge assessed by fission track thermochronology

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