Source:http://linkedlifedata.com/resource/pubmed/id/17834450
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4822
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| pubmed:dateCreated |
2010-6-8
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| pubmed:abstractText |
Haughton Astrobleme is a major extraterrestrial impact structure located on Devon Island in the Canadian Arctic Archipelago, Northwest Territories. Apatite grains separated from shocked Precambrian gneiss contained in a polymict breccia from the center of the astrobleme yielded a fission-track date of 22.4 million +/- 1.4 million years before the present or early Miocene (Aquitanian). This provides a date for the impact event and an upper limit on the age of crater-filling lake sediments and a flora and vertebrate fauna occurring in them. A geologically precise date for these fossils provides an important biostratigraphic reference point for interpreting the biotic evolution of the Arctic.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
|
| pubmed:month |
Sep
|
| pubmed:issn |
0036-8075
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
25
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| pubmed:volume |
237
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
1603-5
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| pubmed:year |
1987
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| pubmed:articleTitle |
Fission-track dating of haughton astrobleme and included biota, devon island, Canada.
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| pubmed:publicationType |
Journal Article
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