Info

Figure 3.2

Oldowan artifacts from the Gona site, Middle Awash Valley, Ethiopia (redrawn after S. Semaw 2000, Journal of Archaeological Science 27, fig. 8).

millions of years ago polarity millions of years ago polarity

0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 — 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 — 4.3 4.5 4.7 4.9 5.1

Brunhes Normal Chron

Jaramillo Normal Subchron

Matuyama Reversed Chron

Olduvai Normal Subchron

Réunion I Normal Subchron Réunion II Normal Subchron

Olduvai Normal Subchron

Réunion I Normal Subchron Réunion II Normal Subchron

Gauss Normal Chron

Kaena Reversed Subchron Mammoth Reversed Subchron

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