a. A phase system that may be defined in terms of three components.
b. Any phase in a ternary system consisting of all three components.
c. A eutectic, peritectic, or other singular point in a ternary system.
An alloy steel that contains one alloying element; the term is synonymous
with a simple alloy steel. It contains the one element plus the iron and
carbon, hence ternary. Fay
Sheet iron or steel coated with an alloy of about four parts lead to one
part tin. Webster 3rd
Sheet steel covered with a tin-lead alloy.
A modification of the open-hearth furnace in which the essential feature
is the port design. The air ports gradually increase in cross section
until they are as large as the hearth itself, thus practically eliminating
turbulent flow in the furnace. Osborne
See:fichtelite
Hydrocarbon present (30% to 60%) in pine oil, which is widely used as
frother in the flotation process. Pryor, 3
The principal frothing agent in pine oil. Pryor, 3
a. Finely pulverized powder, CaSO4 .2H2 O , made from gypsum
and used in the manufacture of paper, paints, artificial marble, and
composition plastics. CCD, 2
b. Any of several white mineral substances, such as (1) gypsum ground for
a pigment; (2) kaolin used esp. as an adulterant of paints; (3) burnt
alum; (4) magnesia; and (5) blanc fixe. Webster 3rd
a. A level or nearly level plain, generally narrow in comparison with its
length, from which the surface slopes upward on one side and downward on
the other side. Terraces and their bounding slopes are formed in a variety
of ways, some being aggradational and others degradational. Fay
b. A flaw in marble, commonly cored out and filled up. Webster 2nd
c. A raised portion of an ancient riverbed or a bank on which alluvial
deposits may be found. Nelson
d. A bench in quarry or opencast mining. Nelson
e. A ridge, a ridge and hollow, or a flat bench built along a ground
contour. Nichols, 1
f. A narrow, gently sloping constructional coastal strip extending seaward
or lakeward, and veneered by a sedimentary deposit; esp. a wave-built
terrace. AGI
g. Loosely, a stripped wave-cut platform that has been exposed by uplift
or by lowering of the water level; an elevated wave-cut bench. AGI
h. Any long, narrow, relatively level or gently inclined surface,
generally less broad than a plain, bounded along one edge by a steeper
descending slope and along the other by a steeper ascending slope; a large
bench or steplike ledge breaking the continuity of a slope. The term is
usually applied to both the lower or front slope (the riser) and the
flattish surface (the tread), and it commonly denotes a valley-contained,
aggradational form composed of unconsolidated material as contrasted with
a bench eroded in solid rock. A terrace commonly occurs along the margin
and above the level of a body of water, marking a former water level;
e.g., a stream terrace. AGI
i. A term commonly but incorrectly applied to the deposit underlying the
tread and riser of a terrace, esp. the alluvium of a stream terrace; this
deposit should more properly be referred to as a fill, alluvial fill, or
alluvial deposit, in order to differentiate it from the topographic form.
AGI
j. See:structural terrace
See:bench placer
A term applied loosely to any fine-textured, fairly plastic clay that
acquires a natural vitreous skin in burning and that is used in the
manufacture of terra cotta. It is characterized by low shrinkage, freedom
from warping, strong bonding, and absence of soluble salts. AGI
One who makes metal profiles and wooden forms for use in casting plaster
terra-cotta block mold. DOT
A tract or region of the Earth's surface considered as a physical feature,
an ecologic environment, or a site of some planned human activity, e.g.,
an engineering location; or in terms of military science, as in terrain
analysis. Not to be confused with terrane. AGI
A terrain coefficient is a number expressing the ratio of actual ground
displacement by elastic waves to that which the same waves would produce
in rock. The terrain coefficient for rock is thus 1; for unconsolidated
materials it ranges upward to as high as 30, depending on the thickness of
the material. Leet, 2
A correction applied to observed values obtained in geophysical surveys in
order to remove the effect of variations in the observations due to the
topography near observation sites. Syn:topographic correction
AGI
Used to describe quarries when located in low slopes. CF:hillside
Streefkerk
a. A group of strata, a zone, or a series of rocks; used in the
description of rocks in a general, provisional, or noncommittal sense.
Fay
b. A region considered in relation to its fitness for some purpose; an
extent of ground or territory. Standard, 2
c. A fault-bounded body of rock of regional extent, characterized by a
geologic history different from that of contiguous terranes. A terrane is
generally considered to be a discrete allochthonous fragment of oceanic or
continental material added to a craton at an active margin by accretion.
See also:suspect terrane
d. Informally, a region where a particular rock or group of rocks
predominates. Not to be confused with terrain. AGI
Literally, heavy earth; another name for heavy spar or barite. Fay
A reddish-brown residual soil found as a mantle over limestone bedrock,
typically in the karst areas around the Adriatic Sea, under conditions of
Mediterranean-type climate. Also spelled: terra rosa. Etymol: Italian, red
earth. AGI
In marble working, a defective or disfigured place in a marble block,
which is cut out and filled with a composition. Also spelled terrace.
Standard, 2; Fay