The white arrow in this cross-section points to an unconformity (black line). this is a disconformity unconformity is it
This is further explained below.
What is disconformity or unconformity?
Generally, Unevenness between parallel strata of sedimentary rocks, resulting from erosion or lack of deposition, is known as disconformity. Subaerial erosion characteristics are used to identify discontinuities. In the rock record, channels and paleosols may be left behind by this form of erosion.
In conclusion, A deviation from the norm is shown by the white arrow in this cross-section (black line). This is a deviation from the standard. nonconformity is the goal, here.
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