All Words Glossary

Glossary of Geology Terms
beginning with letter D
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debris Tweet Definition of debris Like Definition of debris on Facebook
noun
  1. Rubble, wreckage, scattered remains of something destroyed.
  2. Litter and discarded refuse.
  3. (geology) Large rock fragments left by a melting glacier etc.
deflation Tweet Definition of deflation Like Definition of deflation on Facebook
noun
  1. (economics) A decrease in the general price level, that is, in the nominal cost of goods and services as well as wages.
dells Tweet Definition of dells Like Definition of dells on Facebook
noun
  1. (plural of, dell)
denudation Tweet Definition of denudation Like Definition of denudation on Facebook
noun
  1. The act of stripping off covering, or removing the surface; a making bare.
  2. The laying bare of rocks by the washing away of the overlying earth, etc.; or the excavation and removal of them by the action of running water.
denude Tweet Definition of denude Like Definition of denude on Facebook
verb (denud, ing)
  1. To divest of all covering; to make bare or naked; to strip; to divest; as, to denude one of clothing, or lands.
deposit Tweet Definition of deposit Like Definition of deposit on Facebook
noun
  1. Sediment or rock that is not native to its present location or is different from the surrounding material. Sometimes refers to ore or gems.
  2. asset that was left to the care of the other
  3. Money placed in an account.
  4. The act of placing money into an account.
  5. Anything left behind on a surface.
a mineral
a of seaweed on the shore
  1. A sum of money or other asset given as an initial payment, to show good faith, or to reserve something for purchase.
They put a on the apartment.
verb
  1. (transitive) To leave or adhere one material or item onto another.
He deposited his gum on the bottom of the table.
  1. To entrust one's assets to the care of another. Sometimes done as collateral.
  2. (transitive) To put money or funds into an account.
Deposition Tweet Definition of Deposition Like Definition of Deposition on Facebook
proper noun
  1. (Christianity) The removal of Jesus from the cross.
Devonian Tweet Definition of Devonian Like Definition of Devonian on Facebook
noun
  1. (geology) the Devonian period
adjective
  1. (geology) of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 415 to 360 million years ago
diagenesis Tweet Definition of diagenesis Like Definition of diagenesis on Facebook
noun (diageneses)
  1. (geology) All the chemical, physical, and biological changes sediment goes through during and after lithification, not including weathering or other surface changes.
diluvial Tweet Definition of diluvial Like Definition of diluvial on Facebook
adjective
  1. Relating to or produced by a flood or deluge.
  2. Pertaining to Noah's Flood.
discontinuity Tweet Definition of discontinuity Like Definition of discontinuity on Facebook
noun
  1. a lack of continuity, regularity or sequence; a break or gap
  2. (geology) a subterranean interface at which seismic velocities change
  3. (mathematics) a point in the range of a function at which it is undefined or not continuous
displacement Tweet Definition of displacement Like Definition of displacement on Facebook
noun (rfc-level, Noun at L4+ not in L3 POS section)
  1. The act of displace, displacing, or the state of being displaced; a putting out of place.
"Unnecessary of funds." -A. Hamilton.
"The of the sun by parallax." -Whewell.
  1. The quantity of anything, as water, displaced by a floating body, as by a ship, the weight of the displaced liquid being equal to that of the displacing body.
  2. (chemistry) The process of extracting soluble substances from organic material and the like, whereby a quantity of saturated solvent is displaced, or removed, for another quantity of the solvent.
  3. (fencing) Moving the target to avoid an attack; dodge, dodging.
  4. (physics) A vector quantity which denotes distance with a directional component.
disturbance Tweet Definition of disturbance Like Definition of disturbance on Facebook
noun (pluraldisturbances)
  1. The act of disturbing, being disturbed
  2. Something that disturbs
That guy causes a lot of trouble, you know, he's such a disturbance.
  1. An interruption of that which is normal or regular.
  2. (psychology) A serious mental imbalance or illness.
dome Tweet Definition of dome Like Definition of dome on Facebook
noun
  1. A common structural element of architecture that resembles the hollow upper half of a sphere.
  2. Anything shaped like an upset bowl, often used as a cover, e.g. a cake .
dormant Tweet Definition of dormant Like Definition of dormant on Facebook
adjective
  1. Inactive, asleep, suspended.
Grass goes during the winter, waiting for spring before it grows again.
The bank account was ; there had been no transactions in months.
drift Tweet Definition of drift Like Definition of drift on Facebook
noun
  1. The act or motion of drifting; the force which impels or drives; an overpowering influence or impulse.
  2. A place, also known as a ford, along a river where the water is shallow enough to permit oxen or sheep to be driven to the opposite side.
  3. Course or direction along which anything is driven; setting.
  4. The tendency of an act, argument, course of conduct, or the like; object aimed at or intended; intention; hence, also, import or meaning of a sentence or discourse; aim.
  5. That which is driven, forced, or urged along
  6. Anything driven at random.
  7. A mass of matter which has been driven or forced onward together in a body, or thrown together in a heap, etc., esp. by wind or water; as, a drift of snow, of ice, of sand, and the like.
  8. A drove or flock, as of cattle, sheep, birds.
  9. The horizontal thrust or pressure of an arch or vault upon the abutments.
  10. A collection of loose earth and rocks, or boulders, which have been distributed over large portions of the earth's surface, especially in latitudes north of forty degrees, by the agency of ice.
  11. In South Africa, a ford in a river.
  12. A slightly tapered tool of steel for enlarging or shaping a hole in metal, by being forced or driven into or through it; a broach.
  13. A tool used in driving down compactly the composition contained in a rocket, or like firework.
  14. A deviation from the line of fire, peculiar to oblong projectiles.
  15. A passage driven or cut between shaft and shaft; a driftway; a small subterranean gallery; an adit or tunnel.
  16. The distance through which a current flows in a given time.
  17. The angle which the line of a ship's motion makes with the meridian, in drifting.
  18. The distance to which a vessel is carried off from her desired course by the wind, currents, or other causes.
  19. The place in a deep-waisted vessel where the sheer is raised and the rail is cut off, and usually terminated with a scroll, or driftpiece.
  20. The distance between the two blocks of a tackle.
  21. The difference between the size of a bolt and the hole into which it is driven, or between the circumference of a hoop and that of the mast on which it is to be driven.
  22. A sideways movement of the ball through the air, when bowled by a spin bowler.
  23. Driftwood, driftwood included in flotsam washed up onto the beach.
  24. Driftless Area, Drift (see Wikipedia). The material left behind by the retreat of continenal glaciers. It buries former river valleys and creates young river valleys. The Diftless Area, a geographical area of North America, was unglaciated for the past 510 million years. Mass noun.
verb
  1. To move slowly, pushed by currents of water, air, etc
The boat drifted away from the shore.
The balloon was drifting in the breeze.
  1. To move haphazardly without any destination.
''He drifted from town to town, never settling down.
  1. To deviate gently from the intended direction of travel.
''This car tends to drift left at high speeds
drumlin Tweet Definition of drumlin Like Definition of drumlin on Facebook
noun
  1. An elongated hill or ridge of glacial drift
duster Tweet Definition of duster Like Definition of duster on Facebook
noun
  1. An object, now especially a cloth, used for dusting surfaces etc.
  2. Someone who dusts.

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