DETAIL VIEW: sedimentology_322.jpg

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TOPIC: Sedimentology; Concretions

ABSTRACT: Huge concretion in interbedded sandstone and siltstone. Dark zone is approx. 1m thick. Concretions are early: beds are compacted around them.

PERIOD: _

LOCATION: Africa; South Africa; Zinguin Tunnel; Middle Ekka Group; Vryheid Formation

SLIDE: 35mm Slide, Cox 3

DATE: 1994

AUTHOR: Cox; Ronadh