Feeds

Yikes. Supervolcano found under Hong Kong

Krakatau a mere firecracker compared to thankfully-dormant discovery

New hybrid storage solutions

Hong Kong geologists have revealed for the first time the full extent of an ancient supervolcano with a diameter of 18km sitting beneath the former British colony.

The giant ash monster is thought to be of the same collapse caldera type as the infamous Krakatau volcano which killed tens of thousands and literally rocked the world when it blasted open near the Indonesian islands of Java and Sumatra in 1883.

The discovery - one of only around 50 such volcanoes in the world - is a coup for the local rock boffins, who have been digging around the Geopark in Sai Kun in the east of the Special Administrative Region for several years.

A supervolcano is one which is capable of producing 1,000 cubic kilometers of ash in an eruption. To put that in perspective, the hugely destructive Krakatau, whose explosion was said to be heard as far away as Perth, ejected only around 20 cubic kms.

The High Island supervolcano, as it has been dubbed, last erupted at least 140m years ago in the Mesozoic era, according to a report in local rag The Standard.

“This discovery was the result of years of very detailed, meticulous surveying work and very careful dating of the rocks," survey boss Roderick Sewell told the paper.

"It took a very long time to piece everything together into a story. It's a long road to discovery but when you suddenly get the 'aha! moment', it makes it all worthwhile."

Unfortunately the volcano has mostly eroded now so that little is still visible, although it apparently extends down as far as Kowloon and Hong Kong Island.

Local volcanophiles, however, can still see remnants of the monster ash-spewer in the form of large hexagonal columns of rock which dot the islands around Sai Kung. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Boffins: Behold the SILICON CHEAPNESS of our tiny, radio-signal-munching IoT sensor
Single ant-sized Stanford chip combines radio, 'puter, antenna
Thought that last dinosaur was BIG? This one's bloody ENORMOUS
Weighed several adult elephants, contend boffins
TROUT and EELS in SINISTER PACT to RULE the oceans
Slimy chums form deadly alliance to sweep seas
Drones swarm over bearded Brit billionaire's island getaway
Just to take lovely pictures though, after Richard Branson invests in 3D Robotics
Chelyabinsk-sized SURPRISE asteroid to skim Earth, satnav birds
Space rock appears out of nowhere, buzzes planet on Sunday
California blue whale numbers soar to historical levels, say boffins
Still far too many of them being struck by US ships, mind
City hidden beneath England's Stonehenge had HUMAN ABATTOIR. And a pub
Boozed-up ancients drank beer before tearing corpses apart
'Duck face' selfie in SPAAAACE: Rosetta's snap with bird comet
Probe prepares to make first landing on fast-moving rock
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.