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Article Abstract:
The presence of phosphatic fossils, depositional environments and the paleoecology of the reefs are among the factors that bear out the lack of photosynthesis in Epiphyton and photosymbionts in archaeocyaths. Observations on depth-related changes in skeletal and abiotic carbonate also offer strong evidence that photosynthesis did not occur in the cyanobacteria. It is also argued that archaeocyaths did not possess photosymbionts, as borne out by the (delta)13C values of skeletal carbonate and abiotic marine cements and the lack of compositional variability.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1998
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Article Abstract:
The data presented regarding sedimentology in northwestern Namibia particularly the Neoproterozoic Otavi and Mulden groups was not meant to be the basis to infer the geometry of precambrian plates. Rather, the data appears to refute the tectonic model based on the assumption that plate interaction along the Damara orogen took place after the closure of Inland Branch.
Publication Name: Geology
Subject: Earth sciences
ISSN: 0091-7613
Year: 1997
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