alluvium

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alluvium

The material deposited on land by virtue of the process of accretion. The accretion process occurs when rivers or other waters deposit silt and mud on land,and thus create more land; the silt and mud making up the new land is called alluvium.

References in periodicals archive ?
After the Andap disaster, Project Noah inventoried alluvial fans using high-resolution optical satellite imagery.
The Argyle Smoke Creek Alluvial Diamond Project area comprises 22 granted Prospecting Licences (PLs) which lies adjacent to the primary deposit which hosts the current Argyle Diamond Mine's (ADM) AK1.
In late April 2010, NAR completed the acquisition of the entire equity interests in Dadizi Yuan LLC ("Dadi") through an indirect wholly-owned subsidiary, Dadi holds the mining and exploration licences for two alluvial gold mines in Mongolia, which have a total mining area of approximately 2,003 hectares (representing approximately 20.03 square kilometers), with measured gold reserves of 324.7 kilograms (1 tonne = 1,000 kilograms).
The in situ measurements lasted 84 days for the ferrallitic soil and 165 days for the alluvial soil.
Redaurum is also engaged in drilling alluvial diamond targets on the Konkiep River in Nambia where it has confirmed the presence of a well defined paleo-river channel containing a basal gravel horizon.
In line with the Company's strategy of becoming a leading global producer of large and premiumquality diamonds from alluvial and kimberlite sources, 2019 diamond sales to date from the two mines operated by Lucapa (on a 100% basis) now total US$35.5 million (A$50.2 million) at an average price of US$1,347 (A$1,905) per carat.
Cyprus-based UAP was formed in 2003 as a joint venture between EIL and RPM, a unit of South Africa's Anglo American Platinum Ltd (JNB:AMS), to operate as a alluvial platinum exploration company holding licenses in the Ural Mountains in Russia.
-- Gold anomalism delineated over 6km of strike immediately upstream of alluvial workings.
Bedrock incision rates, as calculated from dated alluvial covers of strath surfaces indicated the values that are spatially variable and fall in the range of rates reported from across the Himalaya.
The market had been built on a foundation of rubble over alluvial soil and was still settling.
Five areas with known or previously worked deposits include copper and alluvial gold at the dormant Krantzberg mine near Omaruru, and tin, tungsten and tantalite at Spitzkoppe.
Lulo alluvial mine, Angola (Lucapa 40% and operator)