Final answer:
The Eratosthenian Period (3.16 - 1.1 Ga) is associated with c. post-volcanic activities and follows periods of higher volcanic activity in geological history.
Step-by-step explanation:
The Eratosthenian Period, which lasted from 3.16 to 1.1 billion years ago (Ga), is associated with post-volcanic activities. Unlike the earlier lunar geological periods, which were characterized by intense volcanic activity, the Eratosthenian Period is marked by a significant decrease in such events. This period is part of the geological time scale that includes multiple periods, such as the Triassic, Paleozoic Era, and the Neoproterozoic Era, each with different characteristics regarding Earth's atmosphere, radiation levels, geologic upheavals, and volcanic activities.