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首页> 外文期刊>International Journal of Geophysics >Identifying Buried Segments of Active Faults in the Northern Rio Grande Rift Using Aeromagnetic, LiDAR, and Gravity Data, South-Central Colorado, USA
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Identifying Buried Segments of Active Faults in the Northern Rio Grande Rift Using Aeromagnetic, LiDAR, and Gravity Data, South-Central Colorado, USA

机译：使用航空电磁，LiDAR和重力数据识别北里奥格兰德大裂谷活动断层的埋藏段，美国科罗拉多州中南部

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Combined interpretation of aeromagnetic and LiDAR data builds on the strength of the aeromagnetic method to locate normal faults with significant offset under cover and the strength of LiDAR interpretation to identify the age and sense of motion of faults. Each data set helps resolve ambiguities in interpreting the other. In addition, gravity data can be used to infer the sense of motion for totally buried faults inferred solely from aeromagnetic data. Combined interpretation to identify active faults at the northern end of the San Luis Basin of the northern Rio Grande rift has confirmed general aspects of previous geologic mapping but has also provided significant improvements. The interpretation revises and extends mapped fault traces, confirms tectonic versus fluvial origins of steep stream banks, and gains additional information on the nature of active and potentially active partially and totally buried faults. Detailed morphology of surfaces mapped from the LiDAR data helps constrain ages of the faults that displace the deposits.The aeromagnetic data provide additional information about their extents in between discontinuous scarps and suggest that several totally buried, potentially active faults are present on both sides of the valley.
机译：航空磁性和LiDAR数据的组合解释建立在航空磁性方法的优势基础上，该方法用于定位掩盖下有明显偏移的正常断层，而LiDAR解释的强度则可以识别断层的年龄和运动方向。每个数据集都有助于解决解释另一个数据集时的歧义。此外，重力数据可用于推断仅由航磁数据推断出的完全埋藏的断层的运动感。结合解释以识别北里奥格兰德大裂谷的圣路易斯盆地北端的活动断层，已证实了先前地质测绘的一般方面，但也提供了重大改进。该解释修改并扩展了测绘的断层迹线，确定了陡峭河岸的构造成因和河流成因，并获得了有关活动和潜在活动的部分和全部埋藏断层的性质的更多信息。根据LiDAR数据绘制的详细表面形貌有助于限制沉积物驱替断层的年龄。航空磁学数据提供了有关不连续陡峭带之间的程度的更多信息，并表明在该矿床的两侧均存在数个被完全掩埋的潜在活动断层。谷。

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