Thermal annealing of fission tracks in apatite 2. A quantitative analysis

Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan Plateau

“…Therefore a component of the late Tertiary cooling indicated by the model output is probably an artifact of deficiencies in the Laslett et al (1987) annealing data. However, since the amount of late Tertiary cooling for the three samples ranges from 50 ° to 100°C, inaccuracies in the annealing model are insufficient to explain the degree of late Tertiary cooling and could also not account for the relative differences in the magnitude of late Tertiary cooling indicated for the three samples:…”

“…The annealing data of Laslett et al (1987) are now known to underestimate the degree of track annealing at low temperatures by some tens of degrees (Vrolijk et al, 1992), although this remains the most widely accepted published annealing model currently in use. Therefore a component of the late Tertiary cooling indicated by the model output is probably an artifact of deficiencies in the Laslett et al (1987) annealing data.…”

“…The modelling approach is based on the annealing data of Laslett et al (1987) for Durango apatite and uses the algorithm described by Willett (1992) and Issler (1996) modified to use the mathematical fit of Crowley et al (1991). In the case of either mixed provenance or differential annealing due to compositional differences, use of modelling programs based on a single apatite composition with allowance for only a single source area thermal history is inappropriate and would produce misleading output.…”

Long-term thermo-tectonic evolution of the Montes de Toledo area (Central Hercynian Belt, Spain): constraints from apatite fission-track analysis

“…For a compre hensive overview of fission-track theory, the reader is referred to Gleadow et al (1986) and Wagner and van den Haute (1992) and references therein. Using experimental annealing results of apatites with differ ent chemical compositions and inverse modeling via Monte Carlo and genetic algorithms simulations (Laslett et al 1987;Gallagher 1995;Ketcham et al 2000), a set of thermal histories that fits both track length distribution and fission-track age can be ob tained. The success in finding a coherent thermal his tory by modeling can be highly dependent on the appropriate use of the known geological constraints imposed on the models.…”

Thermotectonic evolution of an extensional dome: the Cenozoic Osogovo?Lisets core complex (Kraishte zone, western Bulgaria)

“…Group ''b'' underwent relatively slower cooling after 30 Ma. The apatite partial annealing zone is within the temperature limits assigned by Laslett et al (1987). The modelled T-t paths are extended into the zircon partial annealing zone (Yamada et al 1995) where grey squares represent the zircon FT ages of the modelled samples All ages are central ages (Galbraith 1981).…”