Elaterite bubbles up like tar from the ground in areas along the river.
2.
A fossilized offshore sand bar made of the White Cliff Sandstone is also exposed in the Elaterite Basin.
3.
A tarry dark-brown oil called elaterite seeps out of the structure, giving the basin its name.
4.
Elaterite is a brown hydrocarbon varying somewhat in consistency, being sometimes soft, elastic and sticky, like India rubber, and occasionally hard and brittle.
5.
Today these two competing rock units are exposed in a 4 to 5 mile ( 6.4 to 8 km ) wide belt across the park, stretching from south of the Needles through the Maze and to the Elaterite Basin.