Discordant
# Discordant

The adjective discordant ('conflicting, disagreeing, at variance') may describe:

## Earth science

* Discordant rock, one that cuts across the existing bedding: as in one of the main types of igneous intrusion, or as in the sedimentary clastic dikes
* Discordant strata, rock layers with mismatches in the geologic record
* Discordant coastline, when the bands of rock run perpendicular to the coast
* Discordant drainage pattern, where the pattern of rivers and streams does not correlate with the underlying geology

## Other uses

* Discordant, or dissonant, sounds, in music
* Discordant pair of observations, in statistics
   * Discordant twins, in twin studies
* Serodiscordant relationship, where one of the partners is HIV-positive and the other is not
