KANYAKA STATION RUINS

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GEOLOGY

SOUTH AUSTRALIA

ARROWIE BASIN (ADELAIDE GEOSYNCLINE)

Hawker Group

Dominantly marine shale and siltstone, calcareous in part, minor sandstone and limestone. Mainly lower Wilpena Group.

CAMBRIAN

Atdabanian to Botomian

Wilkawillina Limestone

Archaeocyath-calcimicrobe limestone

NEOPROTEROZOIC

Marinoan

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Parachilna Formation

Sandstone, upward-fining; siltstone and minor carbonate interbeds. Trace fossils include Diplocraterion, and Bemella. (RETURN TO SITE)

CAMBRIAN

MinageAtdabanian

Green Pattern
Green Pattern

ARROYO/DRY WASH

The arroyo that exists next to the Kanyaka Station Ruins which has cut into the side of the Wilkawillina Limestone creating an angled slope, the dry river bed is comprised of medium sized pebbles which have been rounded by river flow and transportation. As river gravel accumulates the vertical erosion of the surrounding bedrock (Wilkawillina Formation) is reduced but the impact of the gravel when its moving by river flow can speed up canyon cutting. 

Palmer Creek

 

Gravel distribution in rivers is a random process as each gravel clast moves at its own velocity and at different points can be stored in different periods at depth or in lateral deposits, and can get trapped in sediments several times before reaching the basin, this slows down its track. The age of the gravels and pebbles trapped in the dry wash may be much younger then the tectonic change of the source 

DEATH ROCK

Death Rock is comprised of sandstone from the Parachilna Formation (RETURN TO SITE)

REFEreNCES

South Australian Government. (n.d.). SARIG geological map. SARIG. 

GHOST RANCH
NEW MEXICO, U.S.A
DEAD MAN'S PASS
SOUTH AUSTRALIA
BORAH FAULT SCRAP
IDAHO, U.S.A