unconformity – מילון אנגלי-אנגלי
unconformity
n.
nonconformity, lack of accordance with general standards; lack of continuity between strata of sediment (indicating that the rate of deposition was not constant)
Unconformity
An
unconformity is a buried
erosional or non-depositional surface separating two
rock masses or
strata of different ages, indicating that
sediment deposition was not continuous. In general, the older layer was exposed to erosion for an interval of time before deposition of the younger, but the term is used to describe any break in the
sedimentary geologic record. The significance of angular unconformity (see below) was shown by
James Hutton, who found examples of
Hutton's Unconformity at
Jedburgh in 1787 and at
Siccar Point in 1788.
Unconformity
(n.)
Want of parallelism between strata in contact.
(n.)
Want of conformity; incongruity; inconsistency.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
unconformity
A boundary separating two or more rocks of markedly different ages, marking a gap in the geologic record
unconformity
n.
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