Geologic History Review

Which fossil could best be used as an index fossil?

After 22,800 years, approximately what percentageof the original carbon-14 remains?

Why is there no contact metamorphism indicated between rock unit L and rock unit F?

During which geologic epoch did these animals live that were found in Canada’s Burgess shale?

If the Vishnu schist had been exposed to greater heat & pressure, it could have formed

The major source of oxygen in the Proterozoic atmosphere is inferred to have been produced by

Which rock unit was formed most recently?

Which pair of organisms existed when the unconsolidated sediment in layer A was deposited?

The granite formation was primarily formed by

Much of the evidence for the evolution of life forms on Earth has been obtained by

The sequence of rock layers in the cross section provides evidence that the Muave formation is

Which event occurred approximately 4.6 billion years ago?

Which mountain-building event occurred during the time whenValcouroceras was living in oceans?

Fossils of which type of animal would most likely be found in the bedrock of the Catskills?

Earth has bedrock of marine origin that is 4 billion years old. Which inference can be made?

During which period in geologic history did the uplifting of the Adirondack Mountains begin?

Which geologic event occurred in NYS at the same time as extinction of dinosaurs & ammonoids?

Which scientific principle states that younger rocks are deposited on top of older rocks?

What percentage of Earth’s history represents human existence?

Which inference about rock units D, E, & H can be supported by evidence in the cross section?

Which NYS location has bedrock that has been subjected to very intense regional metamorphism?

Volcanic ash deposits are most useful in correlating the age of rock layers if distributed over

The depositional environment during the time these layers and fossils were deposited

A fossil formed 11,400 years ago. Which percentage of carbon-14 remains in the fossil?

During which geologic epoch was layer F deposited?