Journal article
Emergence of blueschists on Earth linked to secular changes in oceanic crust composition
- Abstract:
-
The oldest blueschists—metamorphic rocks formed during subduction—are of Neoproterozoic age1, and 0.7–0.8 billion years old. Yet, subduction of oceanic crust to mantle depths is thought to have occurred since the Hadean, over 4 billion years ago2. Blueschists typically form under cold geothermal gradients of less than 400 °C GPa−1, so their absence in the ancient rock record is typically attributed to hotter pre-Neoproterozoic mantle prohibiting such low-temperature metamorphism; however, mod...
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- Publication status:
- Published
- Peer review status:
- Peer reviewed
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Bibliographic Details
- Publisher:
- Springer Nature
- Journal:
- Nature Geoscience More from this journal
- Volume:
- 9
- Issue:
- 1
- Pages:
- 60-64
- Publication date:
- 2015-12-14
- Acceptance date:
- 2015-10-27
- DOI:
- EISSN:
-
1752-0908
- ISSN:
-
1752-0894
Item Description
- Language:
- English
- Keywords:
- Pubs id:
-
pubs:1081634
- UUID:
-
uuid:48630722-57a2-4dd7-8101-92ea1c8df8a1
- Local pid:
- pubs:1081634
- Source identifiers:
-
1081634
- Deposit date:
- 2020-01-10
Terms of use
- Copyright date:
- 2015
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from Nature Geoscience at: 10.1038/ngeo2605
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