Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073981 |
Transient slab flattening beneath Colombia | |
Wagner, L. S.1; Jaramillo, J. S.2; Ramirez-Hoyos, L. F.2; Monsalve, G.2; Cardona, A.3; Becker, T. W.4,5 | |
2017-07-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Colombia |
英文摘要 | Subduction of the Nazca and Caribbean Plates beneath northwestern Colombia is seen in two distinct Wadati Benioff Zones, one associated with a flat slab to the north and one associated with normal subduction south of 5.5 degrees N. The normal subduction region is characterized by an active arc, whereas the flat slab region has no known Holocene volcanism. We analyze volcanic patterns over the past 14 Ma to show that in the mid-Miocene a continuous arc extended up to 7 degrees N, indicating normal subduction of the Nazca Plate all along Colombia's Pacific margin. However, by similar to 6 Ma, we find a complete cessation of this arc north of 3 degrees N, indicating the presence of a far more laterally extensive flat slab than at present. Volcanism did not resume between 3 degrees N and 6 degrees N until after 4 Ma, consistent with lateral tearing and resteepening of the southern portion of the Colombian flat slab at that time. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406257400017 |
WOS关键词 | NORTHWESTERN SOUTH-AMERICA ; NORTHERN ANDES ; TECTONIC IMPLICATIONS ; EASTERN CORDILLERA ; FOCAL MECHANISMS ; FLAT SUBDUCTION ; PANAMA ARC ; EVOLUTION ; DEFORMATION ; BUCARAMANGA |
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/25709 |
专题 | 气候变化 |
作者单位 | 1.Carnegie Inst Sci, Dept Terr Magnetism, 5241 Broad Branch Rd NW, Washington, DC 20015 USA; 2.Univ Nacl Colombia, Dept Geociencias & Medio Ambiente, Medellin, Colombia; 3.Univ Nacl Colombia, Dept Proc & Energia, Medellin, Colombia; 4.Univ Texas Austin, Inst Geophys, Jackson Sch Geosci, Austin, TX USA; 5.Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX USA |
推荐引用方式 GB/T 7714 | Wagner, L. S.,Jaramillo, J. S.,Ramirez-Hoyos, L. F.,et al. Transient slab flattening beneath Colombia[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(13). |
APA | Wagner, L. S.,Jaramillo, J. S.,Ramirez-Hoyos, L. F.,Monsalve, G.,Cardona, A.,&Becker, T. W..(2017).Transient slab flattening beneath Colombia.GEOPHYSICAL RESEARCH LETTERS,44(13). |
MLA | Wagner, L. S.,et al."Transient slab flattening beneath Colombia".GEOPHYSICAL RESEARCH LETTERS 44.13(2017). |
条目包含的文件 | 条目无相关文件。 |
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