Geochronological constraints on the age of a Permo–Triassic impact event: U–Pb and 40Ar/39Ar results for the 40 km Araguainha structure of central Brazil
Impact cratering has been a fundamental geological process in Earth history with major ramifications for the biosphere. The complexity of shocked and melted rocks within impact structures presents difficulties for accurate and precise radiogenic isotope age determination, hampering the assessment of...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Pergamon-Elsevier Science Ltd
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/44373 |