Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1986-09-01 |
タイトル |
|
|
言語 |
en |
|
タイトル |
Rb-Sr whole-rock ages of metamorphic rocks from eastern Queen Maud Land, East Antarctica |
言語 |
|
|
言語 |
eng |
資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
ページ属性 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
P(論文) |
著者名(英) |
Shibata, Ken
Yanai, Keizo
Shiraishi, Kazuyuki
|
著者所属(英) |
|
|
|
en |
|
|
Geological Survey of Japan/National Institute of Polar Research/National Institute of Polar Research |
抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Rb-Sr whole-rock isochron ages were determined on the Lutzow-Holm and Yamato-Belgica Complexes from eastern Queen Maud Land. Metamorphic rocks from East Ongul Island, Nesoya, Sinnan Rocks and the Yamato Mountains gave ages ranging between 683.0 and 722.1Ma. Rocks from Skarvsnes gave older ages of 1131 and 1033Ma. All these ages are interpreted to represent the times of high-grade metamorphism. The Skarvsnes area was apparently not affected by the 700Ma metamorphism. The initial ^<87>Sr/^<86>Sr ratios of metamorphic rocks show a considerable variation on local as well as regional scale. The higher initial ratios of the Yamato Mountains suggest that the protolith of the Yamato-Belgica Complex is older than that of the Lutzow-Holm Complex. |
雑誌書誌ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 43,
p. 133-148,
発行日 1986-09
|