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Swiss Journal of Geosciences

Table 1 Apatite fission track data from the crystalline basement in the Benken borehole, in comparison with data from the same locality and depth in Mazurek et al. (2006)

From: Plio-Pleistocene landscape evolution in Northern Switzerland

Sample no and locality

Mineral and no. crystals

Spontaneous ρs (Ns)

Induced ρi (Ni)

P (χ)2

Dosimeter ρda (Nd)

Central FT age (Ma) (−2σ/+2σ)

Dpar

Mean track length

SD of distribution (no. tracks)

MR P 334 (690.989/277.843/−1,002 m)

Apatite (20)

0.090 (1,237)

0.218 (3,002)

3.9 %

14.39 (11,319)

101.1 (−3.8/+3.9)

3.60

11.05

1.54 (200)

For comparison

 BEN-1002 (Mazurek et al. 2006)

Apatite (22)

0.406 (2,969)

0.674 (4,934)

<1 %

10.96 (6,076)

106.0 (±5.5)

–

10.36

1.96 (150)

  1. Track densities are (×107 tr cm−2), a = (×105 tr cm−2) with numbers of tracks counted (N) shown in brackets. Analysis by external detector method using 0.5 for the 4π/2π geometry correction factor. Age of MR P 334 calculated using dosimeter glass CN-5 for apatite with ζ CN5 = 344 ± 5. P(χ 2) is probability for obtaining χ 2 value for v degrees of freedom, where v = no. crystals −1. Dpar and track length data are given in 10−6 m, SD = 1σ standard deviation, values were not corrected for their angle to c-axis
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