Tertiary Climatic Change in the Marginal Northeastern Pacific Ocean

See allHide authors and affiliations

Science  08 Aug 1969:
Vol. 165, Issue 3893, pp. 583-585
DOI: 10.1126/science.165.3893.583


Analysis of distributional patterns of shallow-water molluscan faunas of the middle latitudes of the marginal northeastern Pacific Ocean discloses a sharp reversal during the Miocene of the progressive climatic deterioration. A low point in the Tertiary cooling trend during the Oligocene was followed by climatic warming that culminated during the middle Miocene, as illustrated by a series of zoogeographic profiles.

Stay Connected to Science