a. The gently sloping tread around a continent, extending from the
low-water line to the depth of approx. 100 fathoms (183 m), at which depth there is a marked increase of slope toward the great depths.
Schieferdecker
b. The gently sloping, shallowly submerged marginal zone of the continents
extending from the shore to an abrupt increase in bottom inclination. The
greatest average depth is less than 60 ft (18.3 m), and the width ranges
from very narrow to more than 200 mi (322 km). AGI
c. An area of a coastal State comprising the seabed and subsoil of the
submarine areas that extend beyond its territorial sea throughout the
natural prolongation of its land territory to the outer edge of the
continental margin, or to a distance of 200 nmi (370 km) from the
baselines from which the breadth of the territorial sea is measured where
the outer edge of the continental shelf does not extend up to that
distance. See also:outer continental shelf
See:shield
a. The declivity from the offshore border of the continental shelf at
depths of approx. 100 fathoms (600 ft or 183 m) to oceanic depths. It is
characterized by a marked increase in gradient. AGI
b. Continuously sloping portion of the continental margin with gradient of
more than 1:40, beginning at the outer edge of the continental shelf and
bounded on the outside by a rather abrupt decrease in slope where the
continental rise begins at depths ranging from about 4,500 to 10,000 ft
(1.4 to 3.0 km). Formerly considered to extend to the abyssal plains.
AGI
The sediment and rock mass underlying the coastal plain, the continental
shelf, and the continental slope. AGI
The concept that where there is no change of state, seawater is
incompressible and the liquid matter is neither created nor destroyed. If
there is any vertical contraction in a volume of fluid, therefore, there
must be a horizontal expansion, so that the original volume is maintained.
This is accomplished by motion resulting in changes of the shape of the
original parcel of water. Hy
A method of traversing by which the azimuth of the survey lines is
obtained from the instrument. BS, 7
This type of elevator has the buckets so shaped and attached to the chain
or belt that the back of each serves as a discharge chute for the one
immediately succeeding it. Syn:bucket elevator
An excavator consisting of a series of buckets attached to a continuous
chain, guided by two or more ladders. The buckets are drawn against the
bank face, taking a cut of constant depth, while simultaneously the
machine moves slowly along the ground on a bench above or below the bank;
often used in opencast mining in soft deposits. Nelson
A casting technique in which an ingot, billet, tube, or other shape is
continuously solidified while it is being poured, so that its length is
not determined by mold dimensions. ASM, 1
A charge of explosive that occupies the entire drill hole, except for the
space at the top required for stemming. Fay
A coal mining machine of the type that cuts the face of the coal without
being withdrawn from the cut. Fay
A borehole-drilling technique whereby the cuttings-removal agent is
countercirculated through an inside flush-coupled-type drill string to
deliver both the cuttings and core produced to a tray or container at the
surface. Long
Coal-cutting machines such as the shortwall cutter, longwall cutter, and
overcutting machines. They are known as continuous cutters because a
continuous cut can be made the full width of the face without stopping
these machines, while machines of the intermittent variety must be
frequently reset. Kiser
Deformation accomplished by flowage of rocks rather than by rupture.
A drier in which the wet material moves through the drying cycle in an
uninterrupted flow pattern in contrast to a batch drier. ACSG, 2
In this operation, the same personnel do the drilling, blasting, and
mucking while working continuously round after round. They can in this
way--except for the time for ventilation--be at work during the whole
shift. Continuous driving is used when the advance per round is low and
the mucking or the drilling and blasting do not need more than a part of
the shift. Langefors
Extraction (leaching) of solids by liquid that cycles continuously
countercurrent to the material it is depleting of the sought value (e.g.,
gold in cyanide process), the pregnant liquid at a certain stage being
stripped of value and returned as barren solution. Pryor, 1
See:Oliver filter
A drill rod with continuous helical fluting, which acts as a screw
conveyor to remove cuttings produced by an auger drill head. Also called
auger. Long
An atmosphere-supplying respirator that provides a continuous flow of
respirable gas to the respiratory inlet covering. ANSI
Said of a process in which the charge enters at one end, moves through
continuously, and is discharged at the other end. Syn:furnace
CTD