Featured Research

from universities, journals, and other organizations

Rainfall Controls Cascade Mountains' Erosion And Bedrock Uplift Patterns

Date:
December 15, 2003
Source:
National Science Foundation
Summary:
The pattern of rainfall in the Washington Cascades strongly affects long-term erosion rates in the mountain range and may cause bedrock to be pulled up towards the Earth's surface faster in some places than others, according to a National Science Foundation (NSF)-funded study published in this week's issue of the journal Nature.

Arlington, Va. -- The pattern of rainfall in the Washington Cascades strongly affects long-term erosion rates in the mountain range and may cause bedrock to be pulled up towards the Earth's surface faster in some places than others, according to a National Science Foundation (NSF)-funded study published in this week's issue of the journal Nature. The results are the first convincing evidence of such effects, on mountain-range scales.

Related Articles


"The data strongly suggest that precipitation controls erosion rates across the Cascades, and that the regional climate may also exert a strong control on the distribution and scale of tectonic rock uplift and deformation of the range," said Peter Reiners, lead author of the study and a geologist at Yale University.

"Geologists usually think of erosion wearing away mountains," says David Fountain, program director in NSF's division of earth sciences, which funded the research. "These results, however, show us that erosion can be an important player in uplift of mountain ranges, especially in mountainous regions that receive heavy precipitation."

Using a dating method that determines when and how fast erosion brings bedrock toward the surface of the Earth, Reiners and his co-researchers found evidence to support long-standing theories about the interplay of climate, erosion and tectonics.

"People have thought the scale and pattern of rock uplift is mostly controlled by deep, plate-tectonic forces," he said. "Based on our findings, the pattern of bedrock uplift is closely tied to climate through erosion."

Rainfall is heavy in parts of the Pacific Northwest because mountains in the region cast enormous rain shadows. Moist air moving east from the Pacific rises and cools as it encounters the ranges, dumping large amounts of rain and snow on the west side of the Cascades, where it rains about 10 times more than in most places in Washington. The east sides and the summits are relatively dry.

Co-authors of the paper include Todd Ehlers of the University of Michigan and Sara Mitchell and David Montgomery of the University of Washington.


Story Source:

The above story is based on materials provided by National Science Foundation. Note: Materials may be edited for content and length.


Cite This Page:

National Science Foundation. "Rainfall Controls Cascade Mountains' Erosion And Bedrock Uplift Patterns." ScienceDaily. ScienceDaily, 15 December 2003. <www.sciencedaily.com/releases/2003/12/031212075857.htm>.
National Science Foundation. (2003, December 15). Rainfall Controls Cascade Mountains' Erosion And Bedrock Uplift Patterns. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2003/12/031212075857.htm
National Science Foundation. "Rainfall Controls Cascade Mountains' Erosion And Bedrock Uplift Patterns." ScienceDaily. www.sciencedaily.com/releases/2003/12/031212075857.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
Powered by NewsLook.com
Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Raw: Buffalo Residents Digging Out, Helping out

Raw: Buffalo Residents Digging Out, Helping out

AP (Nov. 22, 2014) Hundreds of volunteers joined a 'shovel brigade' in Buffalo, New York on Saturday, as the city was living up to its nickname, "The City of Good Neighbors." Video provided by AP
Powered by NewsLook.com
Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins