Articles | Volume 4, issue 1
Geochronology, 4, 227–250, 2022
https://doi.org/10.5194/gchron-4-227-2022
Geochronology, 4, 227–250, 2022
https://doi.org/10.5194/gchron-4-227-2022
Research article
21 Apr 2022
Research article | 21 Apr 2022

Calcite U–Pb dating of altered ancient oceanic crust in the North Pamir, Central Asia

Johannes Rembe et al.

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Short summary
Calcite is frequently formed during alteration processes in the basaltic, uppermost layer of juvenile oceanic crust. Weathered oceanic basalts are hard to date with conventional radiometric methods. We show in a case study from the North Pamir, Central Asia, that calcite U–Pb age data, supported by geochemistry and petrological microscopy, have potential to date sufficiently old oceanic basalts, if the time span between basalt extrusion and latest calcite precipitation (~ 25 Myr) is considered.