redbed

redbed

[′red‚bed]
(geology)
Continentally deposited sediment composed principally of sandstone, siltsone, and shale; red in color due to the presence of ferric oxide (hematite). Also known as red rock.
References in periodicals archive ?
Bank of New York Mellon is offering tax equity funding of $439.6m in return of a stake in the 100MW Meadow Lake 5, 99MW Redbed Plains, 98MW Quilt Block and 66MW Hog Creek wind farms.
Xia et al., "Experimental study on confined swelling characteristic of redbed mudstone in Chongqing," Journal of Disaster Prevention and Mitigation Engineering, vol.
Mesozoic redbed floras in east-central Mexico and their stratigraphic relationships with marine beds.
Purple soils, taxonomically designated as Eutric Regosol according to FAO soil classification, are developed from sedimentary redbed rocks of various geologic epochs.
These slow-growing trees, which occupied well-drained riparian areas, floodplains, and basin-margin uplands, preferred the type of stable, seasonally dry conditions recorded by the redbed paleosols described above (Falcon-Lang 2003; Falcon-Lang et al.
They consist of strongly dissected caliche breaks and redbed breaks" (Anonymous 1977a).
More common in the Blomidon Formation is "redbed" sandstone (Mertz and Hubert 1990).
4) consists of a Late Devonian redbed and volcanic sequence referred to as the Fountain Lake Group, Late Devonian to Mississippian clastic fluvial-lacustrine rocks of the Horton Group, Mississippian marine evaporite, clastic-carbonate sequence of the Windsor Group, the fine-grained terrestrial clastic rocks of the Mabou Group, coal measures of the Cumberland Group, and late Carboniferous to Permian redbeds of the Pictou Group (Ryan et al.
The occurrence of such a concentrated footprint record within a reduced redbed horizon is suggestive of the presence of organic material, but whether organic matter in the presence of the trackmakers bears any paleoecological significance is uncertain.
All post-Acadian redbed exposures are located in the Waite zone, including two new fault-bounded slivers discovered during this study.
The following deductions can be made concerning the red clay in core 94138-104: 1) the coloration suggests a Carboniferous redbed source, the most proximal being the Deer Lake Basin; 2) foraminifera analysis indicates reduced salinity; 3) the position of the red unit at the top of the glaciomarine sequence shows that it was deposited immediately following deglaciation but before the deposition of Unit 3; and 4) the lack of clasts (dropstones) suggests a non-glacial source.