Question
After examining a sequence of horizontal sedimentary rocks, a geologist determines that there is a considerable span of time for which no sedimentary rock layers exist at this location. The geologist discovered _____.
a sequence of correlated strata
a nonconformity
a disconformity
an angular unconformity
a sequence of correlated strata
a nonconformity
a disconformity
an angular unconformity
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GPT-4o mini
The geologist discovered **a disconformity**.
A disconformity is a type of unconformity that occurs when there is a gap in the geological record between two layers of sedimentary rock that are parallel to each other. This indicates a period of erosion or non-deposition, which aligns with the geologist's observation of a considerable span of time with no sedimentary rock layers present at the location.
A disconformity is a type of unconformity that occurs when there is a gap in the geological record between two layers of sedimentary rock that are parallel to each other. This indicates a period of erosion or non-deposition, which aligns with the geologist's observation of a considerable span of time with no sedimentary rock layers present at the location.
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