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respectively. The coeval sills found mostly in Zimbabwe and the Kaapvaal cratons have a close relationship to each other. These sills are however the feeders to the south pans berg group of lavas at presumable facts (Olsson and S””Oderlund et al. 490–500). The dated feeder dyke systems are the source of the new information thus being the source code to the cause of petronic setting re-evaluation

where the range is from the state back-arc to either radiating swarms or vice versa originating from igneous centers.

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the actual contents of the shales from the Kaapvaal Craton (Archean and Proterozoic) are approximated to be on an average of ˜2 wt.%. These values and the average organic of the modern marine sediments are similar. This is a suggestion to mean that the organic elements preserved and the organic productivity in an ocean during a specified duration were same as to those in the earlier era

so long as there was a close relationship in the elasticity of the sediments. Additionally

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