From Geoscience Australia
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Collenia Reefs

Created 17/10/2025

Updated 09/01/2026

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Collenia is a name for calcareous structures in rocks of Upper Proterozoic (Algonkian) time and of world-wide distribution. It is described as the calcareous secretion of primitive microscopical algae, which themselves are never preserved. A number of similar forms are described under various names, and for brevity, they are all commonly referred to as "Cryptozoon" or "Stromatoliths", or even as "calcareous algae". [Previous studies, and recurrent opinions and interpretations of the subject are summarised and discussed. Conditions for the extensive development and thickness of the reefs are outlined. Recommendations for further study are given.]

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Additional Info

Field Value
Title Collenia Reefs
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/e5839181-fdeb-477d-8ce9-d190b220d9e3
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 24/11/2025
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Collenia Reefs". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/collenia-reefs