composite grain

composite grain

[kəm′päz·ət ′grān]
(geology)
A sedimentary clast formed of two or more original particles.
References in periodicals archive ?
According to the researchers, when the amount of diopside added to the base of hydroxyapatite increases up to 30 weight percent, the size of final composite grain and its size distribution significantly decreases after two steps of sintering process.
Composite grain samples collected from the URN harvests 2001 through 2003 were submitted for evaluation of milling and bread baking properties by the USDA-ARS Hard Spring Wheat Quality Laboratory in Fargo, ND.
On the basis of composite grain samples from nine locations in 2004, milling and baking characteristics of MT1159CL are intermediate to Tiber and the imazamox tolerant cultivar Above.
Milling and bread baking characteristics of Paul were determined from composite grain samples harvested at four Montana locations over a 5-yr period (1999-2003, n = 20 location-years).
Milling and bread baking characteristics of Genou were determined from composite grain samples harvested at multiple Montana locations over a 5-yr period (2000-2004, n = 20 location-years).
Milling and bread baking characteristics of Bond CL were determined from multilocation composite grain samples from the Colorado UVPT in 2001 and 2002.
Milling and bread baking characteristics of Protection were determined from multilocation composite grain samples from the Colorado UVPT in 2001 and 2002.
Milling and bread baking characteristics of Hatcher were determined from multilocation composite grain samples in 2000, 2001, and 2002 and three single-location evaluations in 2001 (n = 6 observations).
Milling and bread baking characteristics of Avalanche were determined from composite grain samples from eight subregional production zones (Peterson, 1992) from the 1999 and 2000 USDA Southern Regional Performance Nurseries and from the 1999 and 2000 Colorado Dryland Variety Performance Trials.
Some quartz and feldspar are also found in the heavy mineral fraction because of less than perfect separation and/or their presence in composite grains with heavy minerals.
Theoretical calculations show that over a wide range of wavelengths, the postulated composite grains have optical properties closely matching those observed in interstellar space.