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alluvial deposit |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.03 sec. |
alluvial depositMaterial deposited by rivers. It consists of silt, sand, clay, and gravel, as well as much organic matter. Alluvial deposits are usually most extensive in the lower part of a river's course, forming floodplains and deltas, but they may form at any point where the river overflows its banks or where the flow of a river is checked. They yield very fertile soils, such as those of the deltas of the Mississippi, Nile, Ganges and Brahmaputra, and Huang (Yellow) rivers. They contain most of the world's supply of tin ore, as well as, in some regions, gold, platinum, and gemstones. alluvial deposit [ə′lüv·ē·əl di′päz·ət] (geology) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | ||
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| The huge Western-style hotels and
business offices along Shanghai's riverside Bund required specially
designed moorings to turn the shifting alluvial sediment into stable
foundations.
If these sediments offer encouragement, we will commence further gravity
traverses across the interpreted course of these paleochannels, and
continue to follow-up with drilling to confirm their location and
whether the associated alluvial sediments carry kimberlite indicator
minerals. The property is
entirely covered by unconsolidated tills, alluvial sediments and a thin
veneer of Paleozoic sediments, below which the geology is believed to
consist of rocks belonging to the extension of the Thompson Nickel Belt. |
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