Mobile UPI  |   About UPI  |   UPI en Español  |   UPI Arabic  |   UPIU  |   My Account
Search:
Go

Rocks in Canada gives clues to deep Earth

|
|
 
  
Published: Jan. 14, 2011 at 8:03 PM
Advertisement

REGINA, Saskatchewan, Jan. 14 (UPI) -- Scientists say an area of exposed rock in northwest Saskatchewan is a window into the formation of the Earth's crust billions of years ago.

The area, dubbed the Athabasca granulite terrane, is exciting geologists who say they would have to somehow transport themselves 25 miles below the planet's surface to see features they can observe underfoot while strolling around hundreds of acres of rocky outcrop, Postmedia News reported this week.

The formation was created when a vast amount of molten rock was thrust up from the Earth's lower crust before solidifying at the surface 2 billion years ago.

While similar features exist around the world, none are as expansive or varied in the clues they offer into the planet's hidden depths, scientists say.

"We do not have the technology to drill anywhere near to the lower crust," Michael Williams, a geoscientist at the University of Massachusetts, says.

"But in northern Saskatchewan, we can walk around on lower crust, mapping and sampling. Even if we could drill that deep, we would only get a small round core of rock to look at. In Saskatchewan, we have acres of exposure."

Williams says the region still has many secrets to reveal about the creation of the Earth's crust, the formation of mountain chains such as the Himalayas and the dynamics of the San Andreas Fault and other geological rifts.

"The region is a natural laboratory for studying the boundary area between the Earth's crust and mantle -- at least the processes that were active in the deep crust long ago," said Williams. "We hypothesize that similar processes are occurring today deep in the crust. This is what makes it so special."

Topics: Michael Williams
© 2011 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.

Order reprints
  
Join the conversation
Most Popular Collections
Notable deaths of 2012 Scripps National Spelling Bee AmfAR Cinema Against AIDS gala
Indianapolis 500 Presidential Medal of Freedom Memorial Day around the nation
Additional Science News Stories
1 of 32
Marilyn Monroe Cupcake Portrait at Madame Tussauds in New York
View Caption
A one-of-a-kind 8 x 4 foot portrait of Marilyn Monroe made from 2,100 bite sized stuffed cupcakes stands in the lobby next to her wax figure on the eve of Marilyn Monroe's 86th birthday at Madame Tussauds in New York City on May 31, 2012. UPI/John Angelillo
fark
How to tell if that voice in your head is God. Is it telling you to kill people? Yep, that's God...
Podiatrist accused of begging a 15 year-old teenage babysitter to have sex with him for pay. However,...
40 of the most powerful photographs ever taken. Subby made it to #36 before it got way too dusty...
I fap, you fap, we all fap *fap fap fap*
The "Miami Zombie" case has "spread to various social media outlets and a wave of dark humor has...
Man, the price of Bunga Bunga has really gone up