Iowa Geology

Select the correct chronological of sequences

Iowa's oldest rocks, this era makes up 85% of Earth's history.

What is for dating in the Cambrian era?

What is used for dating in the Ordovician era?

Which of the following were included in the Saux Megasequence

Which of the following units are apart of the Silurian era?

Which of the following are apart of the Ordovician era?

Which era is known to be the 'Age of the Fishes' in terms of fossils?

Which elements are most abundant in the Mississippian era?

What element is the Silurian era most famous for?

Which of the following is NOT apart of the Pennsylvanian formations? (3 answers)

Which of the following are included in the Tippecanoe Sequence?

During which era did glaciers start entering Iowa?

Which of the following formations are associated with the Silurian era?

Which era is world famous for crinoid fossils in Iowa?

Which of the following eras mark the end of the Tippecanoe sequence?