Apatite Fission Track Dating of the Central European Basement. Postvariscan Thermo-Tectonic Evolution

Wagner, Günther A.; Michalski, I.; Zaun, P.

doi:10.1007/978-3-642-74588-1_19

Cited by 15 publications

(23 citation statements)

References 3 publications

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“…Only the new data among these ages are listed in Table 2. The others have been published previously by Wagner et al (1989) and by Bischoff (1993a, b).…”

Section: Age Determination and System Calibrationmentioning

confidence: 90%

“…Information on sampling localities, altitude and rock type of those samples which are discussed for the first time in this article is given in Table 1. The fission-track data from other localities have already been described by Wagner et al (1989) and Bischoff (1993a, b).…”

Section: Fission-track Dating Of Apatite and Zirconmentioning

confidence: 99%

“…The situation changed during the scientific activities for finding an appropriate site for the Continental Deep Drilling Project (KTB). Fission-track dating -among other geological and geophysical efforts -contributed to the selection of the western border of the Bohemian massif in northeastern Bavaria as the KTB target area (Wagner et al 1989). Within a few years, more than 70 samples from various rocks surrounding the KTB location were analysed.…”

Section: Introductionmentioning

confidence: 99%

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Fission-track dating of the western border of the Bohemian massif: thermochronology and tectonic implications

Hejl¹,

Coyle

Lal

et al. 1997

Geol Rundsch

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Since 1985, apatite fission-track analysis was applied to more than 70 samples from surface outcrops and shallow boreholes at the western margin of the Bohemian massif. Apatite ages were determined by the grain-population method. Additional information from the frequency distributions of fully confined spontaneous tracks was used for modelling of t-T paths in the low-temperature range ((120°C). Seven zircon samples were dated by the external detector method. Zircon ages between 283 and 215 Ma indicate unroofing during the Permian molasse stage and the Triassic. Tectonic quiescence and slow subsidence prevailed from the Jurassic until the middle Cretaceous. In the basement area south of Weiden, a Mesozoic partial annealing zone (for apatite fission tracks) is now exposed at the surface. Farther north, the basement was affected by stronger Cretaceous and Palaeogene erosion, which yielded cooling ages between 110 and 49 Ma. This second period of post-Variscan denudation was correlated to reverse faulting along the Franconian Line.

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“…Only the new data among these ages are listed in Table 2. The others have been published previously by Wagner et al (1989) and by Bischoff (1993a, b).…”

Section: Age Determination and System Calibrationmentioning

confidence: 90%

Section: Fission-track Dating Of Apatite and Zirconmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fission-track dating of the western border of the Bohemian massif: thermochronology and tectonic implications

Hejl¹,

Coyle

Lal

et al. 1997

Geol Rundsch

Self Cite

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“…These apatite FT ages cluster around 80-100, 55-70 and 30-40 Ma and indicate slow overall cooling since the Middle Cretaceous. These early studies revealed pronounced block faulting and an increased paleogeothermal gradient, which have been related to the formation of the URG (Michalski 1987;Wagner et al 1989;Wagner 1990). However, to provide a more comprehensive analysis, it is desirable to include the track length distributions, which have a direct record of the temperatures experienced since accumulation of the tracks.…”

Section: Introductionmentioning

confidence: 97%

Low-temperature thermochronology of the flanks of the southern Upper Rhine Graben

Timar-Geng

Fügenschuh

Wetzel

et al. 2005

Int J Earth Sci (Geol Rundsch)

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Low-temperature thermochronology of the flanks of the southern Upper Rhine GrabenAbstract The Upper Rhine Graben (URG) is the most perceptible part of the European Cenozoic Rift System. Uplifted Variscan basement of the Black Forest and the Vosges forms the flanks of the southern part of the graben. Apatite and zircon fission-track (FT) analyses indicate a complex low-temperature thermal history of the basement that was deciphered by inverse modelling of FT parameters. The models were tested against the observed data and independent geological constraints. The zircon FT ages of 28 outcrop samples taken along an E-W trending transect across the Black Forest and the Vosges range from 136 to 312 Ma, the apatite FT ages from 20 to 83 Ma. The frequency distributions of confined track lengths are broad and often bimodal in shape indicating a complex thermal history. Cooling below 120°C in the Early Cretaceous to Palaeogene was followed by a discrete heating episode during the late Eocene and subsequent cooling to surface temperature. The modelled time-temperature (t-T) paths point to a total denudation of the flanks of URG in the range of 1.0-1.7 km for a paleogeothermal gradient of 60°C/km, and 1.3-2.2 km for a paleogeothermal gradient of 45°C/ km since the late Eocene.

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“…If the Permian granite pebbles are derived from the Falkenberg intrusion, the late-Cretaceous fission-track ages of apatite (Wagner et al 1989) suggest that at least 3 km of granite have been eroded afterwards, in accordance with the lack of features (xenoliths, roof pendants, pegmatites) characteristic for the roof of a large pluton.…”

Section: Ze» Zone Of Erbendorf Vohenstraussmentioning

confidence: 98%

Depth of intrusion and thermal modeling of the Falkenberg granite (Oberpfalz, Germany)

Zulauf¹,

Maier²,

Stöckhert³

1997

Geol Rundsch

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The Late Carboniferous Falkenberg granite, exposed 2 km to the east of the German Continental Deep Drilling (KTB) drill site, has solidified at a depth of approximately 9-12 km. The initial temperature of the intrusion was 780-800°C. The shape of the pluton is approximately that of a horizontal plate with an assumed original thickness of approximately 9 km, 3 km of which having now been removed by erosion. The results of simple one-dimensional thermal modeling, based on conductive heat transfer, suggest cooling to 400 and 350°C over approximately 6 and 15 m.y., respectively. With respect to the cooling ages of micas, this suggests that the intrusion is somewhat older than previously assumed. The lack of thermal influence in the nearby crustal section recovered by KTB, compared with the width of the contact aureole inferred from the model, is explained by considerable convergence between contact and drilling site. The initial (synemplacement) distance between the granite/ wall-rock contact and the KTB location was at least twice the recent value. This is consistent with Mesozoic crustal shortening, which has resulted in the antiformal stack geometry of the supracrustal slices drilled by KTB.

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Apatite Fission Track Dating of the Central European Basement. Postvariscan Thermo-Tectonic Evolution

Cited by 15 publications

References 3 publications

Fission-track dating of the western border of the Bohemian massif: thermochronology and tectonic implications

Fission-track dating of the western border of the Bohemian massif: thermochronology and tectonic implications

Low-temperature thermochronology of the flanks of the southern Upper Rhine Graben

Depth of intrusion and thermal modeling of the Falkenberg granite (Oberpfalz, Germany)

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