Authors / CoAuthors
Opik, A.A.
Abstract
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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document
eCat Id
9116
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
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2601
Australia
Keywords
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- GA PublicationRecord
- ( Theme )
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- palaeontology
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
1954-01-01T00:00:00
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unknown
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geoscientificInformation
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Record 1954/050
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