Ages of prehistoric earthquakes revealed by cosmogenic chlorine-36 in a bedrock fault scarp at Hebgen Lake

Marek G Zreda, Jay S. Noller

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Cosmogenic chlorine-36 reveals dates of the multiple prehistoric earthquakes that have produced a scarp on the Hebgen Lake fault. Apparent chlorine-36 ages are stratigraphically correct, follow a predicted theoretical pattern, and produce geologically reasonable model ages of 24, 20, 7.0, 2.6, 1.7, and 0.4 thousand years ago. This result demonstrates the feasibility of using cosmogenic chlorine-36 to extract paleoearthquake records from bedrock fault scarps.

Original languageEnglish (US)
Pages (from-to)1097-1099
Number of pages3
JournalScience
Volume282
Issue number5391
StatePublished - Nov 6 1998

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chlorine isotope
fault scarp
bedrock
earthquake
lake

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Ages of prehistoric earthquakes revealed by cosmogenic chlorine-36 in a bedrock fault scarp at Hebgen Lake. / Zreda, Marek G; Noller, Jay S.

In: Science, Vol. 282, No. 5391, 06.11.1998, p. 1097-1099.

Research output: Contribution to journalArticle

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