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Email
Thilo Bechstädt (Info)
Rainer Zühlke (Info)
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+49 6221 54-8292
+49 6221 54-6055
Fax
+49 6221 54-5503
Thilo Bechstädt (Info)
Rainer Zühlke (Info)
Phone
+49 6221 54-8292
+49 6221 54-6055
Fax
+49 6221 54-5503
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Thermochronology |
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| Focus Apatite & zircon fission track thermochronology Apatite & zircon (U-Th)/He dating t-T path modeling Apatite and zircon fission-track (FT) thermochronology Information on the thermal history of rocks is stored in the minerals apatite and zircon. Whereas apatite covers the time-temperature range of about 110–60°C/10 My, zircon indicates time-temperature histories in the range of 330-190°C/10 My. Apatite and zircon (U-Th)/He dating The (U-Th)/He thermochronology is based on the accumulation of 4He during the a-desintegration of radiogenic isotopes. Apatite and zircon are characterized by closure temperatures (Tc) and partial retention zone (PRZ) as following: Apatite: Tc=75°C/10 My; PRZ=75°C/10 My and 40°C/10 My; zircon: Tc=180°C/10 My. Combined modelling of the t-T history Fission track single grain ages and the confined length distribution are used together with the (U-Th)/He ages to numerically model possible t-T paths for individual samples. The integration and cross-calibration with structural and stratigraphic basin fill data provides improved models of subsidence and/or basin inversion. Together with organic maturation data, the temporal and spatial development of HC generation windows can be analysed. |
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28. February 2012
GeoResources at EAGE Conference & Exhibition, June 4-7, Copenhagen
GeoResources at EAGE Conference & Exhibition, June 4-7, Copenhagen
24. February 2012
GeoResources at DGMK/ÖGEW Spring Conference, April 19-20, Celle
GeoResources at DGMK/ÖGEW Spring Conference, April 19-20, Celle