A lithostratigraphic unit such as a formation can be different ages at different locations.

Index or guide fossils are fossils that have _______________.

The Solar Nebular Theory explains the formation of which of the following:

What is not considered a driving force in the movement of tectonic plates?

In correlation of sedimentary units from one area to another, a pinch-out of a unit always indicates that there is an unconformity surface present.

Based on what we know about sedimentary rocks (texture, composition, weathering) which of the following samples was deposited closest to it source area?

Volcanic arcs form on the _______________________.

Which type of cross bedding shows a change in energy as the sediment was deposited?

Radiometric dating of a sample shows it has undergone 1 half-lives of decay, what percentage of parent material is contained in the sample?

Which of the following is a primary depositional sedimentary feature?