Journal article
Hf-W thermochronometry: Closure temperature and constraints on the accretion and cooling history of the H chondrite parent body
- Abstract:
-
We obtained Hf-W metal-silicate isochrons for several H chondrites of petrologic types 4, 5, and 6 to constrain the accretion and high-temperature thermal history of the H chondrite parent body. The silicate fractions have 180Hf/184W ratios up to ∼ 51 and 182W/184W ratios up to ∼ 33 ε units higher than the whole-rock. These high 180Hf/184W and radiogenic W isotope ratios result in highly precise Hf-W ages. The Hf-W ages of the H chondrites become younger with increasing metamorphic grade and ...
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- Publication status:
- Published
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- Publisher copy:
- 10.1016/j.epsl.2008.03.013
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Authors
Bibliographic Details
- Journal:
- EARTH AND PLANETARY SCIENCE LETTERS
- Volume:
- 270
- Issue:
- 1-2
- Pages:
- 106-118
- Publication date:
- 2008-06-15
- DOI:
- ISSN:
-
0012-821X
- Source identifiers:
-
82806
Item Description
- Language:
- English
- Keywords:
- Pubs id:
-
pubs:82806
- UUID:
-
uuid:4b58c785-41b0-4b8d-8922-ad593b613111
- Local pid:
- pubs:82806
- Deposit date:
- 2012-12-19
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- Copyright date:
- 2008
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