• Live
    • Audio Only
  • google plus
  • facebook
  • twitter
News > Science and Tech

200-Meter Long, 20-Meter Deep Sinkhole Appears in New Zealand

  • 60,000-year-old volcanic soil has been exposed by the sinkhole.

    60,000-year-old volcanic soil has been exposed by the sinkhole. | Photo: Reuters

Published 8 May 2018
Opinion

Mexico, Belize, parts of Italy, Slovenia, Croatia and Russia are also prone to sinkholes, according to the Nat Geo.

A sinkhole measuring about two football fields or 200 meters long and six stories or 20 meters deep has opened up near the city of Rotorua in New Zealand's North Island.

RELATED: 
Hawaii: 5.4-Mag, 6.9-Mag Quakes Trigger Major Volcano Eruption

The sinkhole, which appeared after a prolonged period of heavy rains, has exposed 60,000-year-old volcanic soil and could get bigger, according to volcanologist Brad Scott.

Upon examining the feature, Scott concluded that there has been an erosion of limestone in the area over the past 100 years. Scott told TVNZ that the deposit was covered by ten to 12 meters of sediment, left over from ancient lakes and three meters of volcanic ash.

The volcano is reportedly dormant.

Nine similar environment features have appeared in the region – known as Earthquake Flat – over the past few years. New Zealand sits on several major fault lines that span the length of the country. In 2017, a massive sinkhole opened up in New Lynn, a suburb of Auckland, some 143 miles from Rotorua.

According to the U.S. Geological Survey, sinkholes open up when groundwater does not drain from the surface and dissolves underlying rocks, collapsing the area.

Sinkholes can also be caused by human land development – construction or the pumping of groundwater can result in destabilization.

Mexico, Belize, parts of Italy, Slovenia, Croatia and Russia are also prone to sinkholes, according to the Nat Geo.

China has the world's largest cluster of sinkholes.

Comment
0
Comments
Post with no comments.