Question

1 Identify the Sloss Megasequence (diagram below) each of these assemblages represent (from figure 12.1) . Chuar Group- il Tremadoc Formation Labrador Formation- iv Percha Shale- v. Salem Limestone vi. Paradox Formation- vii. Pierre Shale

Answer 1

Answer

1) Chuar group: They form late proterozoic( upper)

2 Tremedoc formation: Ordovician of early paleozoic.

3) Labrador formations fossils date back to cambrian period of early paleozoic.

4) Percha Shale belongs to Devonian period.

5)salem limestone belongs to Mississippian sub periods of late paleozoic.

6) Paradox Formation Is a Pennsylvanian age formation of late paleozoic

7) Pierre Shale belongs to Upper Cretaceous of mesozoic.

All the above classifications are based on the time period evaluated from the fossils of respective geological formations.