EN ECHELON FEATURES OF ICELANDIC GROUND FISSURES
EN ECHELON FEATURES OF ICELANDIC GROUND FISSURES
复制标题
冰岛地裂缝的 EN 梯队特征
DOI：
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发表时间：
1970
期刊：
影响因子：
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通讯作者：
Kazuaki Nakamura
中科院分区：
文献类型：
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作者：
Acta Naturaliaislandica;Kazuaki Nakamura
研究了冰岛西南部两个地区雁列型地裂缝，特别是其走滑位移方向的方位依赖性。雁列裂缝，连同地堑地形和喷发裂缝，被解释为在垂直于中性（非雁列）裂缝和火山口行（喷发裂缝）的方向上持续扩张的表现。这种解释是基于这样一种考虑，即斜向裂隙的扩张和纯粹的走滑运动可以形成雁列裂隙。根据这种解释，雷克雅内斯半岛特有的地貌特征，如广泛的火山活动和大规模的雁列断裂，可能是斜展脊的地貌表现，而不是简单的转换断层。
En echelon ground fissures, especially the azimuthal dependence of their sense of strike-slip displacement, were studied in two areas in southwest ICeland. The en echelon fissures, together with graben topography and eruptive fissures, are interpreted as the manifestation of continued dilation in a direction perpendicular to that of neutral (non en echelon) fissures and crater rows (eruptive fissures). The interpretation is based on the consideration that an en echelon fissure can be formed as the result ofdilation oblique to the fissure, as well as pure strike-slip movement. According to this interpretation, peculiar sUiface features of the Reykjanes Peninsula such as extensive volcanism and large scale en echelon fractures might be explained as the sUiface expression ofan obliquely spreading ridge rather than a simple transform fault.