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1. Episodic zircon ages, Hf isotopic composition, and the preservation rate of continental crust.

Author

Condie, Kent C., Bickford, M. E., Aster, Richard C., Belousova, Elena, and Scholl, David W.

Subjects
*ZIRCON, *RADIOACTIVE dating, *ISOTOPES, *CONTINENTAL crust, *SEDIMENTS, *OROGENY, *LITHOSPHERE, *OROGENIC belts
Abstract

The article discusses the correlation between episodic uranium/lead (U/Pb) age clusters and hafnium (Hf) isotopic ratios in detrital zircons with supercontinent formation, which preserves juvenile and reworked continental crust in collisions. It states that the crust preservation rate increases by capture and a paucity of zircon ages may relate with supercontinent breakup times. This may reportedly imply that a planet with plate tectonics should exhibit episodic ages in continental crust.

Published
2011
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