Professor links Inskip ‘sink hole’ to sand saturation

VIEW FROM ABOVE: The large chunk of Inskip Point missing following the underwater landslide.
VIEW FROM ABOVE: The large chunk of Inskip Point missing following the underwater landslide. Contributed

PROFESSOR James Shulmeister, who in June studied Rainbow Beach's ancient dune formations, is holidaying about 10,000km away in the United States of America.

But the distance hasn't stopped the learned man from thinking about the cause of the Inskip Point 'sink hole'.

While the University of Queensland fellow said it was tricky to draw conclusions in the absence of evidence available, he said a plausible scenario could be sand saturation.

"If you had something that caused the sand to become saturated (like some sort of water flow through the sand) that would both make the sand very susceptible to erosion and might even wash the sand out itself," he said.

"It's my best guess at this stage but this is done by simply looking at the pictures from 15,000km away."

"Spits like this are short-lived (geologically speaking) and can wash away, but it is storms that usually do the damage."

Some Fraser Coast residents have their own theories.

Sailing fanatic Trevor Cecil, who is familiar with the Wide Bay Bar in between Inskip Point and the southern end of Fraser Island, said it could have been caused by tide's strength.

"There's a lot of water that pours in and a lot of water that pours out," he said.

"I'm not surprised given the big tides.

"Having said that, (understanding the cause) could just be common sense."

Topics:  gympie inskip professor rainbow beach sink hole

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