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The Ecca Group is the second of the main subdivisions of the Karoo Supergroup of geological strata in southern Africa. It mainly follows conformably after the Dwyka Group in some sections, but in some localities overlying unconformably over much older basement rocks. It underlies the Beaufort Group in all known outcrops and exposures.
The geology of Africa is varied and complex, and gives rise to the wide variety of landscapes found across the continent. The African continent rests over two main plates. The African Plate , accounting for the whole of north Africa, and the Somali Plate , which accounts for the eastern side of mid and southern Africa. [ 1 ]
Karoo National Park near Beaufort West, Western Cape Province, South Africa. The geological formations of the Beaufort Group are outcrop over approximately 145 000 km 2, attaining a total thickness of around 6000 m thick at its thickest outcrops. In the west, the lowermost Beaufort Group rocks are found east of Laingsburg and remain continuous ...
A simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Drakensberg Group is represented by the blue key on the map. The Drakensberg Group is a geological group named after the Drakensberg mountain range where in its uppermost sections the rocks are found.
A simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Dwyka Group deposits are represented by the red key on the map The Dwyka Group is one of four geological groups that compose the Karoo Supergroup .
A schematic geological map of the outcrops of the Karoo Supergroup rocks in Southern Africa. The location and approximate structure of the Cape Fold Mountains are also diagrammatically indicated for reference purposes An approximate SW-NE geological cross section through South Africa, with the Cape Peninsula (with Table Mountain ) on left, and ...
Since the Geological Survey was founded around 80 years ago, it has accomplished a number of noteworthy things. The accomplishments comprise: 94% of the country has been geologically mapped, and quarter degree sheets (QDS), which are published geological maps, are accessible at several scales.
A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults , folds , are shown with strike and dip or trend and plunge symbols which give three-dimensional orientations features.