Sydney Harbour – a river valley flooded in the last ice age
Mosman
Through that intervening 300 million years, it has changed dramatically. The last period of glaciation was 12,000 years ago, when Sydney Harbour was a river valley. It was carved by glaciers at that time. When people think about climate change and rising ocean levels - at that time the ocean was 120 metres lower than it is today.
So what happened is when those glaciers melted 12,000 years ago – what is now Sydney Harbour was a river valley that was drowned. The water flooded in and the water level rose 120 metres. If you think about that in the context of where Sydney exists now, the Sydney of today once would have been well above the water line.
When those glaciers melted 12,000 years ago – what is now Sydney Harbour was a river valley that was drowned. The water flooded in and the water level rose 120 metres.
Through that intervening 300 million years, it has changed dramatically. The last period of glaciation was 12,000 years ago, when Sydney Harbour was a river valley. It was carved by glaciers at that time. When people think about climate change and rising ocean levels - at that time the ocean was 120 metres lower than it is today.
So what happened is when those glaciers melted 12,000 years ago – what is now Sydney Harbour was a river valley that was drowned. The water flooded in and the water level rose 120 metres. If you think about that in the context of where Sydney exists now, the Sydney of today once would have been well above the water line.
When those glaciers melted 12,000 years ago – what is now Sydney Harbour was a river valley that was drowned. The water flooded in and the water level rose 120 metres.
You might like...
Cycling Bruny
Bruny is a lovely, beautiful and fun place to explore by bicycle, with a wide variety of natural vistas and landscapes – a microcosm of the nature of Tasmania - packed into a remote yet accessible island.
Sydney Harbour’s marine life makes a comeback
The marine life of the Sydney Harbour got to a low in the 1960s and 1970s, but we've seen an improvement in the last 50 years, with a growing abundance of marine life in the harbour.
Bruny Island - lunawanna-alonnah field guide
The Bruny Field guide is a special project that is ‘crowd-sourcing’ a rich, beautiful and comprehensive guide to the natural history of Bruny Island, its stories, conservation needs and how to see, connect with and be inspired by this extraordinary place
Maasai Mara
Maasai Mara is the northern reaches of the Mara-Serengeti ecosystem, one of the most important wildlife areas and wild landscapes in Africa
Newsletter
Sign up to keep in touch with articles, updates, events or news from Kuno, your platform for nature