The Older Peron transgression, a period of…
6093 BCE to 4366 BCE
The Older Peron—a "transgression" in the sense of marine transgression, a period of advancing global sea level—is a period of generally clement and balmy weather conditions that favors plant growth; warm temperatures force a retreat in the glaciers and ice sheets of the global cryosphere; throughout the period, global sea levels are two-and-a-half to four meters (eight to thirteen feet) higher than the twentieth-century average.
The higher sea level lasts for several centuries and erodes coastlines. (Several locations around the world have "Older Peron terraces" along their coasts as a result.)
Some anthropologists, folklorists, and others have linked the ages of the Older Peron transgression and the Neolithic Subpluvial with tales of a "time of plenty" (Golden Age; Garden of Eden) that occur in the legendary backgrounds of many cultures.