Pictures of absolute dating sports tracker not updating
There are no sedimentary strata to record what happened during the intervening interval.Instead, there is just an unconformity, a buried erosional or non-depositional surface.He published the results of his work and established a basic set of principles for interpreting sedimentary strata.
For instance, an orogenic episode (a long geologic episode of mountain building) may finally come to end and the eroded mountains may be buried beneath a new sequence of sediments.
How would today's sediments appear to a geologist millions of years in the future examining outcrops of sedimentary rock that originated in our time?
What would the geologist be able to deduce about the world we live in, based on what was left in the strata?
A major unconformity would mark the change from the building up of mountains to the wearing down of those same mountains and the subsequent blanketing of the area with sediments.
There are several specific types of unconformities.