Stratigraphy of Holocene Tephras on Adak Island in the West-Central Aleutian Islands, Alaska

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Bibliographic Information

Other Title
  • アリューシャン列島西中部，アダック島の完新世テフラ層序

Description

Adak Island, Alaska is covered with Holocene sequences of soil-tephra complexes. Black (1976) thought that the three conspicuous tephra deposits (Main, Intermediate and Sandwich) erupted from Kanaga volcano. Waythomas et al. (2001) inferred that a possible source volcano of the tephras was Mount Moffett, Adak Island. The three tephra layers increase in thickness from south to north. Thickness and maximum diameter of lithic fragments (ML) suggests that their source was Adagdak volcano or a now submerged volcano nearby. Eruptions of the Intermediate, Sandwich, YBO and Forty Year tephra deposits were dated to approximately 7.2, 4.7, 3.6 and 0.4 cal kBP, respectively.

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Details 詳細情報について

  • CRID
    1390282680673406592
  • NII Article ID
    130005457047
  • DOI
    10.14866/ajg.2012s.0_100139
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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