GeoLog

arkosic sandstones

Imaggeo on Mondays: The sun rises also in the middle of nowhere

Hazel Gibson February 17, 2020

Credit: Andrea Libertino (distributed via imaggeo.egu.eu)

Uluru in Australia is one of the most visibly recognisable geological features in the world. This sandstone formation covers an area of 3.3 kilometres and stands 345 metres above the plains around it. According to geoscientists, the rocks that form Uluru were deposited in an inland sea during the Cambrian Period approximately 500 million years ago. The arkose sandstones were then uplifted and fold ...[Read More]

Imaggeo on Mondays: Storm on the Rock

Laura Roberts-Artal May 30, 2016

Storm on the rock. Credit: John Clemens (distributed via imaggeo.egu.eu)

This is a photograph of Uluru, in the Northern Territory of Australia, on a hot and humid summer afternoon. As lightning flashed about, torrential rains swept across the landscape and silver rivulets of water began to rush down the sides of the mountain. Uluru is made of red-coloured Proterozoic arkosic sandstones, a coarse grained lithology rich in quartz and feldspars. However, on rare days such ...[Read More]