Surface of contact between two groups of unconformable strata, which represents a hiatus in the geologic record due to a combination of erosion and a cessation of sedimentation. Compare diastem. See also angular unconformity; disconformity.
Unconformity
- Bradley, Ralph Allen (1923–2001)
- Bradley–Terry model
- Bradwardine, Thomas (c.1300–49)
- bradycardia
- Brady, Charles, Jr (1951–2006)
- bradykinin
- bradymetabolism
- Brady Plan
- bradyseism
- bradytelic evolution
- Braganza
- Bragg crystal spectrometer
- Bragg equation
- Bragg peak
- Bragg, Sir William Henry
- Bragg, Sir William Henry (1862–1942)
- Bragg, Sir William Lawrence
- Bragg, William Lawrence (1890–1970)
- Bragg–Williams theory
- Bragg’s law
- Brahe, Tycho
- Brahe, Tycho (1546–1601)
- Brahmagupta (598–665)
- Brahmagupta’s formula
- brahman