Subscribe to our free daily newsletters
. Earth Science News .

Subscribe to our free daily newsletters

Project Hotspot
by Staff Writers
Boulder CO (SPX) Apr 06, 2017

This image shows examples of fractures and vesicles in the MH-2 core. Image courtesy J.A. Kessler, The Geological Society of America, and Lithosphere.

In their study published in Lithosphere this week, James Kessler and colleagues examine the geology of a scientific borehole drilled into the Snake River Plain, Idaho, USA, to investigate the potential for geothermal energy at depth.

The site discussed in this paper is on the Mountain Home Air Force Base, where a drillhole in 1984 indicated that geothermal fluids were present at about 1.8 km depth.

With ARRA funding for new energy research and a grant from the International Continental Drilling Program, Kessler and colleagues drilled three 2-km-deep holes in the region. The Snake River Plain is the track of the Yellowstone Hotspot, and consists of rhyolite and basalt.

Volcanic rocks near Yellowstone are quite young, whereas at Mountain Home, Idaho, the rocks are three to five million years old. Despite the abundant evidence for heat, the Snake River Plain does not produce geothermal energy due to a cool water aquifer present in the upper 500 m of the rocks.

The work reported in this paper is on the Mountain Home site, where waters of about 150 C were encounter at 1745 m depth. Kessler and colleagues report on the geology of the basaltic rocks of the borehole, including determining the distribution of the basalts, the presence of faults and fractures at depth, and evidence for older hydrothermal interactions.

They also worked with geophysicists at the University of Alberta to determine the stresses at depth in the site. When holes penetrate rocks at depth, characteristic fractures form and their orientations can be used to determine the orientations of the stresses.

The team reports that the maximum horizontal stresses here are at N 45 E, which suggests a complex geology at depth that might contribute to the localization of the geothermal fluids. Kessler and colleagues posit that these stresses are similar to the stresses observed in northern Nevada.

Another high point of this work is that this reports the results of James Kessler's Ph.D. work; it also included two undergraduates, Mikaela Pulsipher and Fallon Rowe, and master's student Jerome Varriale as co-authors.

Research paper: Geology and in situ Stress of the MH-2 Borehole, Idaho, U.S.A.: Insights into Western Snake River Plain Structure from Geothermal Exploration Drilling

BBC team among injured in Etna volcano drama
Rome (AFP) March 16, 2017
Ten people were injured by flying rock and lava after Mount Etna, Europe's biggest active volcano, burst into life on Thursday, according to a BBC journalist and others caught up in a terrifying drama on the upper slopes. The 10 suffered minor burns, cuts and bruises and six were hospitalised. German volcanologist Boris Behncke described on his Facebook page how the explosion was trigger ... read more

Related Links
Geological Society of America
Bringing Order To A World Of Disasters
When the Earth Quakes
A world of storm and tempest

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once

credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly

paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Trump's visceral response prompts Syria strikes

Over 6,000 flee 'terrifying' violence in S.Sudan town: UN

After US strikes, Syria attack victims dream of Assad ouster

Pride and pain as Mosul doctors treat their own

Despite EU fines, Greece struggling to promote recycling

Granites could solve riddle of pinpointing metals crucial for low carbon tech

Seaweed: From superfood to superconductor

More annual shareholder meetings go virtual in US

Where the Jordan stops flowing

Dead Sea to come alive with concert by electro pioneer

L3 Technologies acquires autonomous underwater robot manufacturer

Blockbuster nature series catches dynamite fishermen on film

Arctic Ocean becoming more like the Atlantic, scientists say

Microbial colonizers of Arctic soils are sensitive to future climate change

Some of Greenland's coastal ice will be permanently lost by 2100

Paintings, sunspots and frost fairs: Rethinking the Little Ice Age

EU approves Syngenta-ChemChina mega-deal

Newly characterized protein has potential to save US farmers millions annually

A slice of luxury: Hong Kong's high-end fruit fad

Making cows more environmentally friendly

Project Hotspot

Relief as flood peak passes in Australia town

Quake kills two near Iran Shiite holy city Mashhad

Australia floodwaters still rising, police search for missing

Five dead in jihadist attack in Mali

Boko Haram kills eight, abducts women in NE Nigeria: sources

Boko Haram kills Nigerian troops after deadly raid on farmers

New Somali army chief escapes deadly car bombing

Married couples with shared ancestry tend to have similar genes

Researchers uncover prehistoric art and ornaments from Indonesian 'Ice Age'

Great apes know when people are wrong: study

Parallel computation provides deeper insight into brain function

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement