Department of Structural Geology and Geodynamics, Georg-August-Universität Göttingen, 37077 Göttingen, Germany
Jie Chen
State Key Lab. of Earthquake Dynamics, Xinjiang Pamir Intracontinental Subduction National Field Observation and Research Station, Institute of Geology, China Earthquake Administration, X9GJ+RV Chaoyang, Beijing, China
Jian-Xin Zhao
School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
Yuexing Feng
School of Earth and Environmental Sciences, The University of Queensland, St Lucia, Brisbane, QLD 4072, Australia
Daryl L. Howard
The Australian Synchrotron, 800 Blackburn Rd, Clayton, VIC 3168, Australia
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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.
Calcite is frequently formed during alteration processes in the basaltic, uppermost layer of...
