Knowledge Resource Center for Ecological Environment in Arid Area
| Structural controls on evaporite paleokarst development : Mississippian Madison Formation, Bighorn Canyon Recreation Area, Wyoming and Montana | |
| Eldam;Nabiel S. | |
| 出版年 | 2012 |
| 英文摘要 | This study provides new insights on the mechanisms that controlled the development of solution-enhanced fractures and suprastratal deformation associated with the Mississippian Madison Sequence IV evaporite paleokarst complex. Based on detailed field mapping utilizing LiDAR, GPS, and field observations, we document a paleostructural high (oriented 145º) associated with the Ancestral Rockies uplift within the study area. One hundred twenty-one sediment-filled, solution-enhanced fractures within the Seq. IV cave roof were mapped and characterized by their dominant fill type (Amsden or Madison) and vertical extent. Spatial analysis reveals minimum spacing of these features occurs in areas uplifted during the Late Paleozoic suggesting a link between paleostructural position and solution feature spacing. Shape analysis of these solution features also supports structural position during the Late Paleozoic acted as a dominant control on fracture morphology: (1) downward tapering and fully penetrative features concentrate in areas that experienced uplift; (2) upward tapering concentrate in areas that were undeformed. Mapping of Seq. IV cave roof strata demonstrates vertical collapse variability exceeds 22 m and fault intensity increases in areas of increased collapse. These findings have significant implications for prediction and characterization of solution-enhanced fractures and suprastratal deformation within evaporite paleokarst systems. text |
| 英文关键词 | Evaporite paleokarst Fractures Bighorn Basin Karst Mississippian Madison Tectonics Amsden Horseshoe shale member Ranchester member Lidar Stratigraphic modeling |
| 语种 | 英语 |
| URL | http://hdl.handle.net/2152/ETD-UT-2012-05-5134 |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/246511 |
| 推荐引用方式 GB/T 7714 | Eldam;Nabiel S.. Structural controls on evaporite paleokarst development : Mississippian Madison Formation, Bighorn Canyon Recreation Area, Wyoming and Montana[D],2012. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Eldam;Nabiel S.]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Eldam;Nabiel S.]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Eldam;Nabiel S.]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
