Mazama and Glacier Peak Volcanic Ash Layers: Relative Ages

Autor:	Roald Fryxell
Rok vydání:	1965
Předmět:	geography Multidisciplinary geography.geographical_feature_category law Range (biology) Crater lake Geochemistry Glacier Radiocarbon dating Geological evidence Geology law.invention Volcanic ash
Zdroj:	Science. 147:1288-1290
ISSN:	1095-9203 0036-8075
DOI:	10.1126/science.147.3663.1288
Popis:	Physiographic and stratigraphic evidence supports the regional correlation of two volcanic ash layers with extinct Mount Mazama at Crater Lake, Oregon, and Glacier Peak in the northern Cascade Range of Washington. A radiocarbon age of 12,000 +/- 310 years confirms geological evidence that ash derived from the Glacier Peak eruption is substantially older than ash from the Mazama eruption of 6600 years ago.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac759a981bd82da63114725a04ca66c1 https://doi.org/10.1126/science.147.3663.1288 Zobrazit plný text záznamu