2024-03-29T08:52:42Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02002450
2023-08-03T05:25:04Z
1642838163960:1642838338003
1642838403551:1642838406414
変形前のマーカー楕円の性質 ―沖縄島国頭層群嘉陽層の場合―
Properties on the initial marker ellipses ―in the case of the Kayo Formation, Kunchan Group, Okinawa-jima―
林, 大五郎
Hayashi, Daigoro
marker ellipse
finite strain analysis
initial fabric
Kayo Formation
Kunchan Group
Okinawa-jima
The method that estimates the initial marker ellipse and the averaged initial ellipse is described. Finite strain analysis carried out previously on the Kayo Formation, Kunchan Group, Okinawa-jima (Hayashi, 1988, 1989) is again examined. It is considered that most of the quartz grain markers do not have initial fabrics from the observation of the distribution tendency of long axes of initial marker ellipses. This is also confirmed by the examination with Lisle's symmetric index test and θcurve test (Lisle, 1977, 1985). The strain analysis was performed precisely because the axial ratios of the average initial ellipse are close to 1.O.
初期マーカー楕円と平均初期楕円を計算する方法を解説し,沖縄島国頭層群嘉陽層の歪解析(林,1988,1989)を吟味した.初期マーカー楕円の長軸方位の分布から,解析に使用した石英粒子マーカーには初期ファブリックがなかったと考えられる.このことは,Lisle(1977,1985)の対称性指数とθ曲線テストによる検討から確認された.平均初期楕円の軸比が1に近いため歪解析の精度は高いと思われる.
論文
http://purl.org/coar/resource_type/c_6501
日本地質学会
VoR
http://hdl.handle.net/20.500.12000/2992
0016-7630
AN00141768
地質学雑誌
9
98
854
841
jpn
open access