GSTDTAP  > 气候变化
DOI10.1002/2017GL073981
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
ISSN0094-8276
EISSN1944-8007
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
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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).
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