A term used in Florida for a pebble phosphate occurring as pellets,
pebbles, and nodules in gravelly beds a few feet below the ground surface.
It is extensively mined. Syn:land pebble; land rock; matrix.
AGI
Finely ground gypsum used as a fertilizer.
A syn. used in South Carolina for land-pebble phosphate. AGI
Multispectral data from satellite remote sensing imagery that provides
landscape patterns reflecting geologic structures, types of rocks, and
vegetation. SME, 1
See:moss agate
A close-grained limestone characterized by dark conspicuous dendritic
markings that suggest natural scenery (woodlands, forests); e.g., the
argillaceous limestone in the Cotham Marble near Bristol, England.
Syn:forest marble
A general term covering a wide variety of mass-movement landforms and
processes involving the downslope transport, under gravitational
influence, of soil and rock material en masse. Usually the displaced
material moves over a relatively confined zone or surface of shear. The
wide range of sites and structures, and of material properties affecting
resistance to shear, result in a great range of landslide morphology,
rates, patterns of movement, and scale. Landsliding is usually preceded,
accompanied, and followed by perceptible creep along the surface of
sliding and/or within the slide mass. Terminology designating landslide
types generally refers to the landform as well as the process responsible
for it; e.g., rockfall, translational slide, block glide, avalanche,
mudflow, liquefaction slide, and slump. Syn:landsliding; slide;
landslip. AGI
See:landslide
A British syn. of landslide. AGI
See:subsidence
As used in the mining law, applies to all lands chiefly valuable for
nonmetalliferous deposits, such as alum, asphaltum, borax, guano,
diamonds, gypsum, marble, mica, slate, amber petroleum, limestone, and
building stone, rather than for agricultural purposes. Such lands are
subject to disposition by the United States under the mining laws only.
Ricketts
Lanc. The pressure exerted by the subsidence of the cover or overburden.
A slow-speed roller mill of the Chilean type. A horizontal spider carrying
six rollers revolves slowly in a pan 10 ft (3 m) or more in diameter,
making about 8 rpm. Liddell
A trigonal mineral, (Mn,Ca)4 (Mn,Fe)9 SbSi2 O (sub
24) ; in skarns. Also spelled laangbanite. (Not langbeinite.)
An isometric mineral, K2 Mg2 (SO4 )3 ;
associated with halite and sylvite in marine evaporite deposits; a source
of potash. (Not langbanite.)
A monoclinic mineral, Cu4 (SO4 )(OH)6 .2H2 O ;
in blue-green concretionary crusts; in Cornwall, U.K., and
Stredoslovensky, Slovakia.
A rope in which the wires are twisted in the same direction as the strands
and the wires are thus exposed to wear for a much greater length than in
round rope. The smoother lang lay resists wear to better advantage and is
frequently preferred for haulage ropes. Syn:universal lay rope
Lewis; Sinclair, 5
Langmuir's adsorption isotherm
The equation for calculating a gas monolayer on a flat surface.
Pryor, 3
Rectangular tank used to measure the surface tension of a monolayer
adsorbed at the surface of a liquid. Pryor, 3
See:winding rope