Evidence for Pangea

How do we know that Pangea existed 250 million years ago? Fossil evidence and mountain belts provide some of the clues. The Permian-age fossil plant, Glossopteris , had seeds too heavy to be blown across an ocean. Yet Glossopteris fossils are found in South America, Africa, Australia, India and Antarctica! The mountain belts... 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

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

A medida que la lluvia bañaba esas nuevas montañas de estilo himalayo, las rocas se erosionaban hasta convertirse en sus componentes elementales, que luego fluían río abajo, llenando los mares con una explosión de nutrientes que alimentaba un estallido de vida. Cada nueva generación ofrecía la oportunidad de una mutación innovadora que... See more

When you're looking at any mountain, you're looking at its vertical exposure. The Rockies rest on a massive plateau that is already often nearly a mile high. Even western Kansas is 4500 feet high. So, if you look at say Pikes Peak, a mountain that's about 14, 500 feet, you may be standing on a flat prairie to the east that is already 5000' high.... See more