Bizarre rock 'ice shelf' found in Pacific

Aug 10, 2012
An area of floating pumice 250 nautical miles in length and 30 nautical miles wide in the South Pacific ocean. A huge cluster of floating volcanic rocks covering almost 26,000 square kilometres (10,000 square miles) has been found drifting in the Pacific.

A huge cluster of floating volcanic rocks covering almost 26,000 square kilometres (10,000 square miles) has been found drifting in the Pacific, the New Zealand navy said Friday.

The strange phenomenon, which witnesses said resembled a shelf, was made up of lightweight pumice expelled from an underwater volcano, the navy said.

An air force plane spotted the rocks on Thursday about 1,000 kilometres (600 miles) offshore from New Zealand and warned a navy warship that it was heading towards them.

Lieutenant Tim Oscar said that while he knew his ship the HMNZS Canterbury was in no danger from the pumice, which is solidified lava filled with , it was still "the weirdest thing I've seen in 18 years at sea".

"As far ahead as I could observe was a raft of pumice moving up and down with the swell," he said.

In this Thursday, Aug. 9, 2012 photo released by New Zealand Defence Force, pumice rocks are shown at an unidentified location after the rocks were collected from an area of floating pumice near South West of Raoul island, off New Zealand's coast. A mass of small volcanic rocks nearly the size of Belgium was discovered floating off the coast of New Zealand. The stretch of golf-ball-size pumice rocks was first spotted this week by a New Zealand air force plane about 1,000 kilometers (620 miles) northeast of Auckland. Scientists said the rocks likely spewed up in an eruption by an underwater volcano. (AP Photo/New Zealand Defence Force, Nicole Munro) EDITORIAL USE ONLY

"The rock looked to be sitting two foot (half a metre) above the surface of the waves and lit up a brilliant while colour in the spotlight. It looked exactly like the edge of an ice shelf."

Scientists aboard the ship said the pumice probably came from an called Monowai, which has been active recently.

They said the phenomenon was unrelated to increased volcanic activity in New Zealand this week, including an eruption at Mount Tongariro that sent an 20,000 feet into the atmosphere.

Explore further: NASA sees Genevieve squeezed between 3 tropical systems

add to favorites email to friend print save as pdf

Related Stories

Chile volcano ash grounds Australia, NZ flights

Jun 12, 2011

Ash from Chile's volcanic eruptions prompted Australian airline Qantas to ground some domestic services and some flights to New Zealand on Sunday, after plumes drifted across the Pacific.

Microbes go rafting on floating volcanic rocks

May 01, 2012

Volcanoes bring death and destruction, but out of the ashes life soon finds fertile ground. A unique experiment is sifting through floating debris from an ongoing volcanic event to see how microbes move in. ...

Giant ash cloud threatens flights in Pacific

May 31, 2010

A giant plume of volcanic ash is disrupting flights in the Pacific and threatening villagers in Vanuatu, echoing similar problems which caused chaos in Europe, scientists and officials said Monday.

Traveling through the volcanic conduit

Jul 23, 2012

How much ash will be injected into the atmosphere during Earth's next volcanic eruption? Recent eruptions have demonstrated our continued vulnerability to ash dispersal, which can disrupt the aviation industry ...

Double volcanic eruption in Eastern Russia

Mar 10, 2005

Acquired from orbit 800 kilometres away, this Envisat image shows two volcanoes erupting simultaneously on Russia's snowy Kamchatka Peninsula this week. Located in the Russian Far East, the Kamchatka Peninsula is ...

Recommended for you

NASA sees Genevieve squeezed between 3 tropical systems

8 hours ago

The resurrected Tropical Depression Genevieve appears squeezed between three other developing areas of low pressure. Satellite data from NOAA and NASA continue to show a lot of tropical activity in the Eastern ...

User comments : 0