The waterfall is 5 metres high and it has the Narracan creek running through it. The waterfall is formed on Tertiary Thorpdale Volcanics. These rocks also outcrop forming rapids in the creek.
Tertiary Thorpdale Volcanics refers to the volcanoes that were active in the Tertiary period (65 milliom years ago to 1.8 million years ago).
The rocks are Olivine (is magnesium iron silicate and is part of the Earth's upper mantle) and Augite Basalt (is a common rock forming pyroxene mineral) of Late Oligocene( 33.9 million years ago to 23 million years ago) to Early Miocene age (23.03 millon years ago to 5.333 million years ago).
Basalt rocks are a mafic extrusive igneous rock formed from the rapid cooling of lava. They are rich in magnesium and iron and can be found exposed at or near the surface of the planet.
It is also known as Bluestone in Victoria.
please send to your answers to log the find.
1. What sort of rocks are here?
2. What are they rich in?
3. How were they made?
4. How many years ago was the Late Oligocene age?
5. When you look at the rocks infront of you. What do you see on them?
you may log straight away please email me your answers