Structural style of the Turkana Rift, Kenya
Structural style of the Turkana Rift, Kenya
复制标题
肯尼亚图尔卡纳裂谷的结构风格
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
B. Rosendahl
中科院分区：
文献类型：
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作者：
Thomas J. Dunkelman;J. Karson;B. Rosendahl
肯尼亚北方东非裂谷系东部分支部分地区的多重地震反射和地质测绘显示，在图尔卡纳湖下存在一个主要裂谷结构，其中至少有3 km的新近纪沉积物充填。这包括一系列的半地堑盆地，中心位于第四纪火山中心，由结构调节区首尾相连。而裂谷的几何形状类似于东非裂谷系的非火山西分支，图尔卡纳半地堑要小得多，可能反映了较薄岩石圈的延伸或裂谷演化过程中更紧密间隔的断裂模式的发展，或两者兼而有之。
Multifold seismic reflection and geologic mapping in part of the eastern branch of the East African Rift system of northern Kenya reveal a major rift structure containing at least 3 km of Neogene sediment fill beneath Lake Turkana. This includes a series of half-graben basins, with centrally located quaternary volcanic centers, which are linked end-to-end by structural accommodation zones. Whereas the geometry of rifting is similar to that of the nonvolcanic western branch of the East African Rift system, the Turkana half-grabens are much smaller and may reflect extension of a thinner lithosphere or development of more closely spaced fracture patterns during rift evolution, or both.