Featured Research

from universities, journals, and other organizations

How Many Meteorites Have Landed In Western Canada? Prospects For The Missing Holocene Impact Record

Date:
December 1, 2008
Source:
Geological Society of America
Summary:

Related Articles


Herd et al. report the discovery of a 36-m-diameter impact crater located in a forested area near the town of Whitecourt, Alberta, Canada. Although too overgrown to be seen in air photos or satellite images, the crater is revealed using a bare-Earth digital elevation model obtained through airborne Light Detection and Ranging (LiDAR).

The crater formed in deglacial sediments, with impact ejecta burying a soil with a radiocarbon age of ~1100 years. Seventy-four iron meteorites (0.1-1196 g) have been recovered, most having an angular, shrapnel-like shape.

These meteorites were buried at depths of <25 cm and are interpreted to result from fragmentation of the original larger mass of the impactor, either at low altitude or during the impact event.

Impact of the main mass formed the simple bowl-shaped impact structure associated with an ejecta blanket and crater fill. Herd et al. show that LiDAR may be a useful tool to look for additional small impact craters.

Journal referernce: C.D.K. Herd et al., Geology, December issue, Pages 955-958.


Story Source:

The above story is based on materials provided by Geological Society of America. Note: Materials may be edited for content and length.


Cite This Page:

Geological Society of America. "How Many Meteorites Have Landed In Western Canada? Prospects For The Missing Holocene Impact Record." ScienceDaily. ScienceDaily, 1 December 2008. <www.sciencedaily.com/releases/2008/11/081126091541.htm>.
Geological Society of America. (2008, December 1). How Many Meteorites Have Landed In Western Canada? Prospects For The Missing Holocene Impact Record. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2008/11/081126091541.htm
Geological Society of America. "How Many Meteorites Have Landed In Western Canada? Prospects For The Missing Holocene Impact Record." ScienceDaily. www.sciencedaily.com/releases/2008/11/081126091541.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Lava on Track to Hit Hawaii Market

Raw: Lava on Track to Hit Hawaii Market

AP (Dec. 19, 2014) Lava from an active volcano on Hawaii's Big Island slowed slightly but stayed on track to hit a shopping center in the small town of Pahoa. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Arctic Warming Twice As Fast As Rest Of Planet

Arctic Warming Twice As Fast As Rest Of Planet

Newsy (Dec. 18, 2014) The Arctic is warming twice as fast as the rest of the planet, thanks in part to something called feedback. Video provided by Newsy
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