An obsolete type of magnetometer used for mapping high-amplitude magnetic
anomalies. It consists of a magnetized needle pivoted to rotate freely in
a vertical plane, with an adjustable weight on the south side of the
magnet. See also:Hotchkiss superdip
a. Coordinate valence link between two atoms. Pryor, 3
b. Electrical symmetry of a molecule. When a molecule is formed by sharing
two electrons between a donor atom and an acceptor, it is more positive at
the donor end and more negative at the acceptor end, and has a dipole
moment of the order of 10-18 electrostatic unit. Dipole moment is
also the couple required to maintain the dipole at right angles to an
electrical or magnetic field of unit intensity. Pryor, 3
Product of the dipole charge and the dipole length. Van Vlack
Corn. A small pit sunk on a lode to catch water; a pit sunk on a bunch
ore.
a. A digging bucket rigidly attached to a stick or arm on an excavating
machine; also the machine itself.
b. N. of Eng. A downthrow, or a fault.
A dredge in which the material excavated is lifted by a single bucket on
the end of an arm, in the same manner as in the ordinary steam shovel.
Fay
A dredger consisting of a single large bucket at the end of a long arm,
swung in a vertical plane by gearing. The bucket capacity may be up to
about 12 cubic yards. See also:dredger
See:fill factor
a. The straight shaft that connects the digging bucket with the boom on an
excavating machine or power shovel. Nichols, 2
b. Standard revolving dipper shovel. Nichols, 2
A needle, consisting of a steel magnet, similar to that in a miners' dial,
but pivoted at the center so as to be free to rotate vertically. It is
used to locate the presence of shallow deposits of magnetic ores. The
magnetometer has now replaced the dipping needle for large-scale
prospecting work. Syn:dip compass
Nelson; Long
See:pickup
An angular measurement taken in an inclined borehole by using one of
several types of borehole-surveying devices or techniques. Long
The distance or separation of formerly adjacent beds on either side of a
fault surface, measured along the dip of the fault. CF:dip slip
AGI
In a fault, the shift or relative displacement of the rock units parallel
to the dip of the fault, but outside the fault zone itself. CF:dip slip;
strike shift. AGI
A system of seismic surveying in which the primary concern is determining
the dip and position of reflecting interfaces rather than in tracing such
interfaces continuously. AGI
In a fault, the component of the movement or slip that is parallel to the
dip of the fault. CF:dip separation; strike slip; oblique slip;
total displacement; dip shift. AGI
A fault on which the movement is parallel to the dip of the fault.
CF:strike-slip fault
A landform developed in regions of gently inclined strata, particularly
where hard and soft strata are interbedded. A long, gentle sloping surface
that parallels the dip of the bedding planes of the strata below ground.
See also:back slope
A current of intake air directed into or down a dip.
a. A slant or piece of track connecting the back entry or air course of a
dipping coal seam with the main entry or gangway. Fay
b. Circuit board component that consists of several switches used to alter
circuit performance.
As used in the diamond-drilling industry, an angular measurement of the
inclination of a borehole taken with a clinometer.
See also:acid-dip survey