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High Stands of Quaternary Sea Level Along the Chilean Coast

By
Humberto Fuenzalida, V.
Humberto Fuenzalida, V.
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Ronald Cooke
Ronald Cooke
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Roland Paskoff
Roland Paskoff
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Kenneth Segerstrom
Kenneth Segerstrom
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Wolfgang Weischet
Wolfgang Weischet
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Published:
January 01, 1965

Marine terraces partly cut in bedrock and partly filled or veneered with clastic deposits extend along much of the Chilean coast, particularly between the 23rd and 40th parallels. The highest terrace, about 250–400 m above present sea level in central and northern Chile, and 170–200 m above the sea in southern Chile, is probably Pliocene. Other terraces, at 150–240 m, 80–130 m, 30–40 m in central and northern Chile, and at 70 m, 20–38 m, 8–10 m in southern Chile, are Pleistocene. The most extensive and best preserved terrace is the one at 80–130 m. There are several lower terraces of Recent age.

Eustatic sea-level changes have been strongly modified by tectonic movements. During the Quaternary, epeirogenetic uplift has been dominant north of the 40th parallel, whereas sinking of the coast has generally prevailed farther south. Late movement of fault blocks has displaced terraces as much as 40–50 m locally.

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GSA Special Papers

International Studies on the Quaternary: Papers Prepared on the Occasion of the VII Congress of the International Association for Quaternary Research Boulder, Colorado, 1965

H. E. Wright, Jr.
H. E. Wright, Jr.
Editors
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David G. Frey
David G. Frey
Editors
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Geological Society of America
Volume
84
ISBN print:
9780813720845
Publication date:
January 01, 1965

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