What is an disconformity?

An intrusion that runs between rock layers,
An intrusion that cuts across another rock,
When a sedimentary rock is deposited on top of an eroded non-sedimentary rock, 
                                                         or

When a sedimentary rock is deposited on top of a parallel eroded sedimentary layer.

1 Answer
David Drayer
Nov 1, 2017

D. When a sedimentary rock is deposited on top of a parallel eroded sedimentary layer

Explanation:

Rocks are basically data according to the fossils contained in them.
The theory of descent through modification ( Darwinian evolution) assumes that the simpler fossil is the older fossil. The geological strata are dated in accordance with the proposed order of the fossils.

In many places in the strata there are large gaps in the proposed age of the fossils in sedimentary layers that on directly on top of each other. The theory is that erosion has removed millions of years of sedimentation allowing the new layer to be laid directly on the existing horizontal sedimentary layer.

In other places the older fossils are found directly on top of the younger fossils. This is also a disconformity. It is theorized that a thrust fault has push the older layer on top of the younger layer with no remaining evidence of the earth movement.

A disconformity is any sequence of sedimentary fossil strata that does not agree with the order proposed by Darwinian evolutionary theory.

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