Glacial Erratic; An erratic is a piece of rock that has been eroded and transported by a glacier to a different area; it is left behind when the ice melts. Glacial erratics give us information about the direction of ice movement and distances of transport.
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www.gov.nl.ca/mines&en/geosurvey/education/features/gla...
www.gov.nl.ca/mines&en/geosurvey/education/features/glacial/
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Figure 10af-6: Glacial erratic near Point Lake, Northwest Territories. Glacial erratics are large pieces of rock that have been transported away from their source areas by moving glacial ice sheets. (Source: The flat region in the foreground to the left of the esker was formed by glacial outwash. (Source:
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www.physicalgeography.net/fundamentals/10af.html
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Erratics are formed by glacial ice erosion resulting from the movement of ice. Glaciers erode by multiple processes: abrasion/scouring, plucking,
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en.wikipedia.org/wiki/Glacial_erratic
en.wikipedia.org/wiki/Glacial_erratic
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Patterns of glacial erratics provide clues of past glacial motions. Other features formed by glacial deposition include long snake-like ridges formed by...
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en.wikipedia.org/wiki/Glacier
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Granite erratics also occur at up to 800 m to the SW of the Cairngorms: they appear to relate to an early expansion of Cairngorm ice prior to the Last Glacial Maximum. A few massive Glacial erratics in central park caithness orkney shetland Naming the glacial erratics of the Cairngorms...
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www.fettes.com/Cairngorms/glacial%20erratics.htm
www.fettes.com/Cairngorms/glacial%20erratics.htm
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Uncategorized question: How do glacial erratics form? Glacial erratics aren't exactly formed. They were deposited by glaciers that were moving in that area...
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wiki.answers.com/Q/How_do_glacial_erratics_form
wiki.answers.com/Q/How_do_glacial_erratics_form
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Glacial Erratics #1 ; Southeast Alaska ; August 1996 Glacial erratics collecting on icefield...
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geoimages.berkeley.edu/GeoImages/Johnson/Landforms/Glac...
geoimages.berkeley.edu/GeoImages/Johnson/Landforms/GlacialPeriglacial/GlacialErratics01.html
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striations are usually oriented in the direction of ice movement. Glacial striations are also formed on erratics (rock fragments) transported by the ice.
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jove.geol.niu.edu/faculty/fischer/429_info/429trips/doo...
jove.geol.niu.edu/faculty/fischer/429_info/429trips/door_county/glossary.htm
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A better explanation is that the boulders were brought to their current resting place by glacial ice and left as ice melted at the end of the last ice age, perhaps 15,000 years ago. Such boulders are called glacial erratics since they appear to be erratically placed over the land surface.
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www.maine.gov/doc/nrimc/mgs/explore/bedrock/sites/nov00...
www.maine.gov/doc/nrimc/mgs/explore/bedrock/sites/nov00.htm
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