Potassic, High-Silica Hadean Crust.
Journal Article
·
· Proceedings of the National Academy of Sciences of the United States of America
Understanding Hadean(>4 Ga) Earth requires knowledge of its crust. The composition of the crust and volatiles migrating through it directly influence the makeup of the atmosphere, the composition of seawater, and nutrient availability. Despite its importance, there is little known and less agreed upon regarding the nature of the Hadean crust. By analyzing the Sr-87/Sr-86 ratio of apatite inclusions in Archean zircons from Nuvvuagittuq, Canada, we show that its protolith had formed a high (>1) Rb/Sr ratio reservoir by at least 4.2 Ga. This result implies that the early crust had a broad range of igneous rocks, extending from mafic to highly silicic compositions
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- National Aeronautic and Space Administration (NASA); National Science Foundation (NSF)
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1571485
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 25 Vol. 115; ISSN 0027-8424
- Country of Publication:
- United States
- Language:
- English
Similar Records
Potassic, high-silica Hadean crust
Potassic, high-silica Hadean crust
Isotopic composition of two Precambrian stratiform barite deposits from the Indian shield
Journal Article
·
Mon Jun 04 00:00:00 EDT 2018
· Proceedings of the National Academy of Sciences of the United States of America
·
OSTI ID:1461888
Potassic, high-silica Hadean crust
Journal Article
·
Thu May 03 20:00:00 EDT 2018
· Proceedings of the National Academy of Sciences of the United States of America
·
OSTI ID:1491658
Isotopic composition of two Precambrian stratiform barite deposits from the Indian shield
Journal Article
·
Mon Dec 31 23:00:00 EST 1990
· Geochimica et Cosmochimica Acta; (USA)
·
OSTI ID:6053502