Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31888.1 |
Late-stage slip history of the Buckskin-Rawhide detachment fault and temporal evolution of the Lincoln Ranch supradetachment basin: New constraints from the middle Miocene Sandtrap Conglomerate | |
Prior, Michael G.1,2; Singleton, John S.2; Stockli, Daniel F.1 | |
2018-09-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:1747-1760 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Lincoln Ranch basin in west-central Arizona preserves a >1.8-km-thick section of Oligocene-Miocene sedimentary rocks deposited during large-magnitude slip along the Buckskin detachment fault. We present new geothermochronometric and stratigraphic data from the middle Miocene Sandtrap Conglomerate to constrain synextensional basin development and slip rates along the Buckskin detachment fault. The Sandtrap Conglomerate consists of a >1.25-km-thick section of pebble to boulder, polymict conglomerate dominated by mylonite clasts derived from the Buckskin detachment fault footwall. U-Pb dating of underlying ash-fall tuffs indicates a maximum depositional age of 14.7 +/- 0.6 Ma. Apatite (U-Th)/He dating (AHe) from boulder clasts within the Sandtrap Conglomerate yielded mean ages of ca. 15.9 +/- 3.6 and 15.7 +/- 1.5 Ma within the lowest similar to 100 m, and slightly younger ages up section to minimum ages of ca. 13-12 Ma, which together with the U-Pb maximum depositional age indicate Sandtrap Conglomerate deposition between ca. 15 Ma and ca. 12 +/- 2 Ma and average sedimentation rates of similar to 250-1250 m/m.y. The transition from the underlying sandstone to Sandtrap Conglomerate deposition coincides with an abrupt increase in mylonitic clasts and a shift from SE- to NW-directed paleocurrents that are orthogonal to footwall corrugations. We interpret this transition to record initiation of a tertiary breakaway fault that resulted in extensive subaerial exposure of the Ives Peak footwall corrugation. (U-Th)/He ages and mylonitic clast lithologies best match footwall rocks similar to 10-16 km to the SW, indicating average fault slip rates of 2.9-4.6 km/m.y. during the last similar to 3.5 m.y. of extension along the Buckskin detachment fault. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443133000018 |
WOS关键词 | WEST-CENTRAL ARIZONA ; METAMORPHIC CORE COMPLEXES ; APATITE (U-TH)/HE THERMOCHRONOMETRY ; SOUTHEASTERN CALIFORNIA ; HE DIFFUSION ; SOUTHWESTERN ARIZONA ; HELIUM DIFFUSION ; LASER-ABLATION ; UPPER PLATE ; MOUNTAINS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24920 |
专题 | 地球科学 |
作者单位 | 1.Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA; 2.Colorado State Univ, Dept Geosci, 1482 Campus Delivery, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Prior, Michael G.,Singleton, John S.,Stockli, Daniel F.. Late-stage slip history of the Buckskin-Rawhide detachment fault and temporal evolution of the Lincoln Ranch supradetachment basin: New constraints from the middle Miocene Sandtrap Conglomerate[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:1747-1760. |
APA | Prior, Michael G.,Singleton, John S.,&Stockli, Daniel F..(2018).Late-stage slip history of the Buckskin-Rawhide detachment fault and temporal evolution of the Lincoln Ranch supradetachment basin: New constraints from the middle Miocene Sandtrap Conglomerate.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,1747-1760. |
MLA | Prior, Michael G.,et al."Late-stage slip history of the Buckskin-Rawhide detachment fault and temporal evolution of the Lincoln Ranch supradetachment basin: New constraints from the middle Miocene Sandtrap Conglomerate".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):1747-1760. |
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