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Evidence on the radius of the Precambrian Earth

Created 17/10/2025

Updated 17/10/2025

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It is suggested that the early and middle Proterozoic crustal record is inconsistent with, and cannot be explained on, an Earth of present-day dimensions (Glikson, in prep.). Stratigraphic, isotopic and geochemical data from terrains of the above age range in Australia, South Africa, Canada and other regions are diagnostic of intrasialic crustal environments - disclosing evidence neither for simatic crust nor for volcanic products of its partial fusion. The sima-tosial transformation processes which have dominated Archaean evolution (Engel, 1968; Viljoen and Viljoen, 1969; Glikson, 1970, 1972; Anhaeusser, 1973; Arth and Hanson, 1975) ceased by ca 2.6 aeons ago, and all available data indicate that both cratonic and mobile Proterozoic domains have, in the main, been founded on sialic basement. An extended tectonic hiatus existed between 2.6 and 2.0 aeons ago, and the onset of development of Proterozoic intrasialic mobile belts is thought to have essentially postdated the latter age.

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Field Value
Title Evidence on the radius of the Precambrian Earth
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4df1e5ee-c212-4361-9ec7-c2696a063c7d
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Evidence on the radius of the Precambrian Earth". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/evidence-on-the-radius-of-the-precambrian-earth