https://repository.kopri.re.kr/handle/201206/13400 2026-04-24T07:21:55Z https://repository.kopri.re.kr/handle/201206/14535 Title: Stable isotope geochemistry of Antarctic MOR basalts and mantle rocks Authors: Seo, Jung Hun 2023-07-26T00:00:00Z https://repository.kopri.re.kr/handle/201206/15181 Title: Mantle dynamics and tectonic evolutions of Zealandia-Antarctic domain Authors: Park, Sung Hyun 2023-02-28T00:00:00Z https://repository.kopri.re.kr/handle/201206/14624 Title: Geophysical Characteristics of Zealandia-Antarctic Mantle Authors: Kim, Seung-Sep 2023-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/14301 Title: Ediacaran mafic magmatism recorded in Cambrian eclogites of the Ross orogen, Antarctica: Implications for the Neoproterozoic rifting episodes along the Pacific­Gondwana margin Authors: 김태환; 김윤섭; 정원석; 조문섭; Lee, Jong Ik Abstract: We report the first finding of Ediacaran mafic magmatism in northern Victoria Land of the Ross orogen, Antarctica, based on ca. 600-590 Ma magmatic zircon cores in Cambrian eclogites. The mafic magmatism could be either linked to ca. 615-590 Ma incipient convergent margin magmatism in central segment of the Ross orogen, or ca. 600-580 Ma continental rift-related volcanism widespread in eastern Australia. The latter is preferred based on the trace-element compositions distinctive from those of arc-related basalts and the depleted mantle-like Hf isotopic compositions of zircon. Our results suggest dual rifting episodes during both the Ediacaran and Cryogenian (ca. 670-650 Ma) in the East Antarctic margin, correlative with those in eastern Australia. A spatial distribution of coeval rifting and subduction along the Ediacaran margin of East Antarctica is readily accounted for by rift inheritance; the upper-and lower-plate geometry resulting from detachment and transform faulting. 2023-01-01T00:00:00Z