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- Title
The Hadean protocrust of the Earth: Formation model and probable composition.
- Authors
Mishkin, M. A.; Vovna, G. M.
- Abstract
The article focuses on the studies regarding the problems related to the formation and composition of the Hadean protocrust of the Earth. It states that several studies focused on the detrital Hadean zircons from Upper Archean metaterrigneous rocks of the Mount Narrier and Jack Hills areas in the Yilgarn Craton of Australia aged 3.9-4.44 Ga, which include analysis of data on mineral inclusions and geochemical isotope composition. It states that the initial temperature of the solid surface layer of the Earth in the Shmidt-Safronov model reach at 300-500 km depths, which assumed to be responsible for the formation of depleted upper mantle and basalt crust of the Earth surface. It also explores the sialic crust and hydrosphere as well as the sedimentation on the Earth surface.
- Subjects
AUSTRALIA; GEOLOGICAL formations; SURFACE of the earth; ZIRCON; CRATONS; EARTH'S mantle; BASALT inclusions; SEDIMENTATION &; deposition; GEOCHEMISTRY; ARCHAEAN stratigraphic geology
- Publication
Doklady Earth Sciences, 2010, Vol 433, Issue 2, p1003
- ISSN
1028-334X
- Publication type
Article
- DOI
10.1134/S1028334X10080039