Saturday, 7 May 2016

Geology of the 'Big Scrub Rainforest' (Part 2)

The story of the 'Big Scrub' s preserved in the rock unit known as the Neranleigh-Fernvale Beds. The first post in this series is about this rock, the foundations of the region. This post deals with the period of big sedimentary basins which corresponds with the age of the... See more

Geology of the Big Scrub Rainforest (Part 4)

Tasman Sea to the Alstonville Plateau

Following the

Cretaceous during the Paleogene and possibly as a result of the action of the

Tasman Sea formation, volcanic systems began to form throughout parts of

eastern Australia. In the New England, the Hunter and Sydney areas swiftly flowing lavas

erupted from long... See more

Geology of the Big Scrub Rainforest (Part 3)

Gondwana

The late Jurassic and

Cretaceous marks a very important geological time. It is the time that the huge

supercontinent of Pangea broke up. This when Gondwana became its own continent

with present day Australia and Antarctica being a large part of a new smaller,

but still impressive super-continent. Our... See more

The concept of ‘deep time’ was first described in 1788 by the Scottish geologist James Hutton, although only coined as a term 200 years later, by the American author John McPhee. Hutton posited that geological features were shaped by cycles of sedimentation and erosion, a process of lifting up then grinding down rocks that required timescales much... See more