glacial till

English

glacial till (plural glacial tills)

(geology) an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift.
- 2016 June 9, Alistair Steele, “Ottawa sinkhole struck in unstable 'rock valley' flagged by engineers”, in CBC News‎:
  The updated geotechnical data report submitted by Golder Associates to Capital Transit Partners, and then presented to the city, describes the valley as a natural trench in the bedrock filled with between 15 and 37 metres of loose fill, silty clay and "glacial till," or broken, weathered rock.

单词	glacial till
释义	glacial till English Noun glacial till (plural glacial tills) (geology) an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift. 2016 June 9, Alistair Steele, “Ottawa sinkhole struck in unstable 'rock valley' flagged by engineers”, in CBC News‎: The updated geotechnical data report submitted by Golder Associates to Capital Transit Partners, and then presented to the city, describes the valley as a natural trench in the bedrock filled with between 15 and 37 metres of loose fill, silty clay and "glacial till," or broken, weathered rock.
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