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While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. Inclusions – inclusions are pieces of one rock layer which have broken off and are now part of another, newer rock layer.
is the study of the formation, sequence and composition of r ock layers. An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Many of the photos were taken in Western Pennsylvania, some of which have never been published.
The presentation is arranged by classes, beginning with switchers and ending with road locomotives – first freight and then passenger.
tells that one rock is older (or younger) than another, but does not tell the rock’s absolute age in years.