Geochronological evolution of HP metamorphic rocks of the Adula nappe, Central Alps, in pre-Alpine and Alpine subduction cycles
SHRIMP dating of zircon from eclogites, their country rock gneisses and quartz veins from the northern and middle Adula nappe, Central Alps, accompanied by cathodoluminescence imaging and REE geochemistry of these dated zircon crystals revealed that the Adula nappe has been affected by two pre-Alpine high-pressure (HP) metamorphic events (northern: c. 330-340 Ma; middle: c. 370 Ma). In the northern Adula nappe, loss of radiogenic Pb of the c. 330-340 Ma zircon domains in combination with...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of the Geological Society|
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