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A disconformity will have:

A. Metamorphic or igneous rock in contact with sedimentary strata.
B. Tilted rocks overlain by flat-lying rocks.
C. Parallel strata on either side of the unconformity.
D. A continuous assemblage of fossils throughout all the layers of strata.

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GinnyAnswer

Final answer:

A disconformity is an erosional surface where older rocks are below younger rocks, often created by changes in sea levels. River channels and soil development provide clues for geologists to identify a disconformity.


Explanation:

A disconformity is an erosional surface where the rocks below the unconformity are much older than the rocks above. This type of unconformity typically forms when horizontal layers of sedimentary rock are deposited in a shallow marine environment, followed by erosion and subsequent deposition of new layers.

Evidence of river channels or soil development often remains, aiding geologists in locating the unconformity within a seemingly continuous succession of sedimentary layers.

At a disconformity, the contact between parallel strata shows a significant age gap between the strata above and below the unconformity.


Learn more about Disconformity in geology here:

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