Red Rock (Gisborne)

373100S 1443900E; 7822-4-1 (Sunbury) 918453. 6 km SE of Gisborne. Dalrymple Road.

Red Rock (Gisborne)

Bulla.

Private land.

Grazing, outcrop.

Type 9:

Composite lava and scoria volcano.

Red Rock is a flat-topped volcano surrounded by rocky escarpments apart from the eastern slope which descends gently to the surrounding lava plain. The flat capping resembles a lava disc overlying a scoria mound. Red scoria is exposed in small quarry cuts beneath the west-facing escarpment.

490+ m; 45 m.

Regional:

This volcano has an unusual flattened summit and may contain a higher percentage of scoria than is typical of the composite volcanoes in the Gisborne area.

Class 2:

Although a large feature, its proximity to Melbourne renders it liable to small farm or residential subdivision that would cover and disguise significant volcanic features.

References:

Edwards, A.B. & Crawford, W. (1940). The Cainzoic volcanic rocks of the Gisborne district, Victoria. Proceedings of the Royal Society of Victoria 52, pp. 281-311.

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