canyon fill

canyon fill

[′kan·yən ‚fil]
(geology)
Loose, unconsolidated material which fills a canyon to a depth of 50 feet (15 meters) or more during periods between great floods.
References in periodicals archive ?
All three wells appear to have productive sands in the Markley Gorge Submarine Canyon Fill Formation and the Upper Mokulmne River Formation.
Re ``Sunshine Canyon fills bill for Valley trash,'' Opinion, March 6):