GAWLER EAST SAND QUARRY

GAWLER EAST - SOUTH AUSTRALIA

SAND QUARRY

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GEOLOGY

SOUTH AUSTRALIA

The area around the Adelaide Fold-Belt in the Barossa Ranges along the foreland basin was once affected by a major tectonic collision called the Delamerian Orogeny.

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BURRA GROUP

The rocks in the quarry are apart of the Burra Group which contains Marine shale and siltstone, lagoonal and lacustrine stromatolitic dolomite and sedimentary magnesite along with deltaic sandstone. The Burra Group is apart of the much larger Warrina Supergroup and is located in the Adelaide Geosyncline. 

Tertiary rocks

The quarry was mining sand which was deposited in the Tertiary period (66 to 2 million years ago). The rocks are undifferentiated but major sections of white calcrete are visible along its high wall.  

(Images are currently placeholders if/until the highwall is accessible) 

GAWLER EAST SAND QUARRY

The quarry once owned by Cemex ceased operations in the year 2000 and has been in rehabilitation ever since its closure, in October 2007 a walk-over of the site was conducted for the future development plan, that concluded with the need of 650,000 m³ of cut to fill earthworks just to build residential properties on.

 

2021 has new plans for it as a new major housing development has sprung up and has been expanding ever since 2014 which has increased the urban sprawl all throughout the region. 

The main pit is 15 meters deep possibly even deeper, close by stockpiles of fill are visible, all of which will be filled in to make room for a school and a public sporting field. The walls will be lined up with added quarry batter (slope in the opposite direction of the wall), new walking paths will also be added around it.  

REFEreNCES

Minister of urban Development. (2010, August). Approved: Gawler (CT) Development plan The Barossa Council Development Plan Gawler East. 

(PP. 42, 44) 

Springwood Master Plan. (2017, December). Town of Gawler Infrastructure & Environmental Services. 

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