boulder


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Boulder,

city (1990 pop. 83,312), seat of Boulder co., N central Colo.; inc. 1871. A Rocky Mountain resort and a suburb of Denver, it is the seat of the Univ. of Colorado (1876). Industries include aerospace and biological research; the manufacture of machinery, electric, electronic, and computer equipment, and medical supplies; and software development. Boulder is home to the National Center for Atmospheric Research and other government and private research operations and is known as a mountain sports and "New Age" mecca.

boulder,

large rock fragment formed by detachment from its parent consolidated rock by weathering and erosion. In engineering and geology, especially in the United States, the term is applied to loose rocks having specific sizes according to various systems of classification, i.e. the Wentworth scale (for C. K. Wentworth, American geologist), where a boulder has one linear dimension of at least 10.1 in. (25.4 cm). Boulders transported by glacial ice are usually referred to as glacial erratics; glacial boulder fields, or felsenmeer, containing large blocks of angular rock broken from intense frost action are evidence that the region has experienced glacial action in the past. See driftdrift,
deposit of mixed clay, gravel, sand, and boulders transported and laid down by glaciers. Stratified, or glaciofluvial, drift is carried by waters flowing from the melting ice of a glacier.
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; morainemoraine
, a formation composed of unsorted and unbedded rock and soil debris called till, which was deposited by a glacier. The till that falls on the sides of a valley glacier from the bounding cliffs makes up lateral moraines, running parallel to the valley sides.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

boulder

[′bōl·dər]
(geology)
A worn rock with a diameter exceeding 256 millimeters. Also spelled bowlder.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

boulder

A naturally rounded rock fragment larger than 10 in. (25 cm) in diameter; used for crude walls and foundations, generally in mortar.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

boulder

1. a smooth rounded mass of rock that has a diameter greater than 25cm and that has been shaped by erosion and transported by ice or water from its original position
2. Geology a rock fragment with a diameter greater than 256 mm and thus bigger than a cobble
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
He said people will also have the opportunity to see the boulder dubbed Memorial Rock, after it fell on Memorial Day weekend.
"I grew up in Boulder, there's a historical value to Audi in Boulder and it's where all of our opportunities started.
In the early 2000's Frank Alexander, who was at the time the director of the county's housing authority (he is now director of Boulder County's Housing and Human Services), started to worry that quickly rising home prices were going to price out a large number of low-income residents and limit the Boulder County housing authority's ability to find appropriate housing for its residents.
At least 15 students, all from multiple area schools, were said to have participated in the group known as the "4th Reich's Official Group Chat." The members came from Boulder Preparatory High School, Centaurus High in Lafayette, Monarch High in Louisville, Pomona High in Arvada, Boulder High and Colorado Mountain College. At least five students from Boulder Valley high school were expelled following the discovery of the social media group chat, the Daily Camera (http://www.dailycamera.com/boulder-county-schools/ci_30459077/exposed-by-suicide-boulder-students-facebook-chat-advocated) reported Wednesday.
The glacial boulder is taking centre stage in "Propagating Dan's Garden Of Potential" at this year's flower show.
(NYSE: PF) has closed its USD 11.00 per share cash acquisition of US-based health and wellness brand owner Boulder Brands, Inc.
has entered into a definitive agreement to acquire Boulder Brands, Inc.
International Resource News-December 4, 2015--SunPower starts construction on Boulder Solar project
Our final column in this series will explore Boulder, Colo.
Children and adults have been invited to test themselves with experts at the Milnsbridge climbing boulder at Crow Lane Recreation Ground on August 30 to gain new skills and confidence.
NASA has opted to retrieve a boulder from an asteroid for its Asteroid Redirect Mission (S&T: Oct.