KOPRI Repository

K-Ar age of the plutonic rock fragments discovered from the Deception Island and its geologic implication

Cited 0 time in scopus
Metadata Downloads
Title
K-Ar age of the plutonic rock fragments discovered from the Deception Island and its geologic implication
Other Titles
디셉션 섬에서 발견된 심성암편의 K-Ar 연령과 지질학적 의미
Authors
박주언
Park, Byoung-Kwon
Lee, Jong Ik
Park, Kye-Hun
Subject
Geology
Keywords
Deception Island; K-Ar; plutonic rock; Bransfield basin; South Shetland Islands; Antarctica
Issue Date
2008
Citation
박주언, et al. 2008. "K-Ar age of the plutonic rock fragments discovered from the Deception Island and its geologic implication". The Petrological Society Of Korea, 17(1): 36-43.
Abstract
Many plutonic rock fragments of granitic composition were collected from the Deception Island. We obtained K-Ar ages of 62.5±1.2 Ma and 140.7±2.7 Ma from the two samples. Such result contradicts the general belief that most of the volcanic rocks of Deception Island are products of very recent activities and their maximum age does not exceed 200 ka. On the other hand, Mesozoic to Cenozoic rocks produced by subduction-related active magmatism have been reported from both South Shetland Islands and Antartic Peninsula, located to the north and south of the Deception Island respectively. Also, various kinds of plutonic rocks with granitic composition are distributed widely. Therefore, plutonic rock fragments with granitic composition discovered from the Deception Island seem to indicate their derivation by capturing granitic crustal material underlying volcanic edifice during the volcanic activities, instead of differentiation from magmas related with recent volcanism. Ages and rock types of the plutonic rock fragments suggest arc-related origin just as adjacent South Shetland Islands and Antarctic Peninasula.
URI
http://repository.kopri.re.kr/handle/201206/6646
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    qrcode

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

    Browse