Date: 28/01/2021 14:33:20
From: mollwollfumble
ID: 1686969
Subject: Volcanoes with wildlife east of Sydney

Old news, from July 2015, but I missed it first time around.

https://www.treehugger.com/newly-discovered-underwater-volcanic-range-teeming-bizarre-tiny-fanged-fish-4862708

Newly Discovered Underwater Volcanic Range Is Teeming With Bizarre, Tiny Fanged Fish

https://blog.csiro.au/sydneys-far-east-is-so-hot-right-now/

Scaleless blackfish

RV Investigator, has discovered four extinct volcanoes 200 kilometres off the coast of Sydney, hidden under almost five kilometres of ocean. The calderas are estimated to be over 50 million years old

The team were amazed to discover an eddy off Sydney that was a hotspot for lobster larvae and other tiny critters, at a time of the year when they were not expecting them. We had thought fish only developed in coastal estuaries, and that once larvae were swept out to sea that was end of them. But in fact, these eddies are nursery grounds for commercial fisheries along the east coast of Australia

This discovery turned the previous understanding of juvenile commercial fish species on its head.

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Date: 28/01/2021 14:43:57
From: mollwollfumble
ID: 1686971
Subject: re: Volcanoes with wildlife east of Sydney

On a slightly different topic, could our Great Barrier Reef be built on a chain of dormant volcanoes originally generated by a moving hotspot?

It has to be built on some sort of rocky foundation, and volcanoes are good at generating a rocky foundation.

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Date: 28/01/2021 15:11:02
From: Michael V
ID: 1686978
Subject: re: Volcanoes with wildlife east of Sydney

mollwollfumble said:


On a slightly different topic, could our Great Barrier Reef be built on a chain of dormant volcanoes originally generated by a moving hotspot?

It has to be built on some sort of rocky foundation, and volcanoes are good at generating a rocky foundation.

IIRC, the substrate to the Great Barrier Reef is mainly continental rock with rare volcanoes.

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Date: 28/01/2021 15:12:56
From: ruby
ID: 1686979
Subject: re: Volcanoes with wildlife east of Sydney

Trying to find out where extinct volcanoes were exactly (apart from 200 kilometres out from Sydney). I like that the Newcastle Herald reported that they were 200 kilometres off the coast of Newcastle…

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Date: 28/01/2021 15:38:27
From: Michael V
ID: 1686989
Subject: re: Volcanoes with wildlife east of Sydney

ruby said:


Trying to find out where extinct volcanoes were exactly (apart from 200 kilometres out from Sydney). I like that the Newcastle Herald reported that they were 200 kilometres off the coast of Newcastle…

The centre of the volcanic cluster is 33 31 S, 153 52 E, which is 248 km from Sydney Heads. The cluster is 20 km long and six km wide and the seafloor 4890 metres deep, with the highest point in the cluster rising up to 3998 metres.

https://blog.csiro.au/rv-investigator-discovers-a-50-million-year-old-volcano-cluster-off-the-coast-of-sydney/

About here:

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Date: 28/01/2021 15:40:00
From: sibeen
ID: 1686990
Subject: re: Volcanoes with wildlife east of Sydney

Michael V said:


ruby said:

Trying to find out where extinct volcanoes were exactly (apart from 200 kilometres out from Sydney). I like that the Newcastle Herald reported that they were 200 kilometres off the coast of Newcastle…

The centre of the volcanic cluster is 33 31 S, 153 52 E, which is 248 km from Sydney Heads. The cluster is 20 km long and six km wide and the seafloor 4890 metres deep, with the highest point in the cluster rising up to 3998 metres.

https://blog.csiro.au/rv-investigator-discovers-a-50-million-year-old-volcano-cluster-off-the-coast-of-sydney/

About here:


So actually off Ruby’s coast then :)

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