Tephrochronology in Adak Island, Aleutian Islands, Alaska

DOI IR IR (HANDLE) Open Access

Bibliographic Information

Other Title
  • アラスカ，アリューシャン列島のアダック島でのテフロクロノロジー

Description

Adak Island, Aleutian Islands, Alaska is covered with Holocene sequences of soil-tephra complexes. Tephra layers are useful for establishing a chronographic framework on the island. Black (1976) described the three conspicuous tephra deposits (Main, Intermediate and Sandwich). We conducted coring peat deposits near Haven Lake, in order to re-evaluate chronological framework. This paper presents petrography and radiocarbon date using accelerator mass spectrometry (AMS). Eruptions of the Main, Intermediate, Sandwich, YBO and Forty Year tephra were dated to approximately 9.5, 7.2, 4.7, 3.6 and 0.4 cal kBP, respectively.

Journal

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top