What does discordant mean in geology?
discordancy. / (dɪsˈkɔːdəns) / noun. geology an arrangement of rock strata in which the older underlying ones dip at a different angle from the younger overlying ones; unconformity. lack of agreement or consonance.
What is discordant age?
discordant age The situation in which a series of age determinations of a single rock body do not yield the same value (compare CONCORDANT AGE).
What is discordant content?
used to describe something that is not in agreement with something else: Discordant opinions prevail even among good judges. strike a discordant note formal. to look or sound different or wrong compared with everything else: The contemporary dialogue struck a slightly discordant note.
What is concordant igneous?
Laccoliths: Laccoliths are concordant igneous bodies with their lower surface flat and upper surface arched in the form of dome (Fig. 8) such bodies are naturally formed due to the accumulation of viscous magma underneath the rocks occurring upon the surface. Laccoliths may have dykes or sill acting as their feeders.
What do you mean by discordance?
Definition of discordance 1 : lack of agreement or harmony : the state or an instance of being discordant. 2 music : dissonance.
What is the difference between concordant and discordant coasts?
Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. A concordant coastline has the same type of rock along its length. Concordant coastlines tend to have fewer bays and headlands.
What does the term discordant mean?
Definition of discordant 1a : being at variance : disagreeing discordant opinions. b : quarrelsome a discordant family. 2 music : relating to a discord (see discord entry 1 sense 2) a discordant tone.
What is a concordant intrusion?
Intrusive structures are often classified according to their relation to the country rock they have intruded. If magma has filled up parallel spaces between the bedding planes of the country rock it is called concordant. If an intrusion cuts right across the original strata or foliation it is called discordant.
What is discordant variation?
The notion of discordant trait variation can be traced back to at least the 1950s. Evolutionary biologists observed that instead of varying together, geographic variation in one trait is usually discordant with geographic variation in other traits.
What does Cordant mean?
1. a substance used to treat leather or other materials before dyeing; aids in dyeing process. Familiarity information: MORDANT used as a noun is very rare.
What is a discordant Rock type?
Batholiths and dikes are examples of discordant rock bodies. A dike is a vertical or near vertical intrusive igneous rock body that cuts across rock beds. They frequently form from explosive eruptions that crack the area around a volcano with the magma filling the cracks forming a dike.
What does discordant coastline mean?
Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. A concordant coastline has the same type of rock along its length. Concordant coastlines tend to have fewer bays and headlands.