DOI: 10.1002/2016GL069795
论文题名: GPS velocities and the construction of the Eastern Cordillera of the Colombian Andes
作者: Mora-Páez H. ; Mencin D.J. ; Molnar P. ; Diederix H. ; Cardona-Piedrahita L. ; Peláez-Gaviria J.-R. ; Corchuelo-Cuervo Y.
刊名: Geophysical Research Letters
ISSN: 0094-8729
EISSN: 1944-8460
出版年: 2016
卷: 43, 期: 16 起始页码: 8407
结束页码: 8416
语种: 英语
英文关键词: Colombia
; Eastern Cordillera
; geodesy
; GPS
; tectonics
Scopus关键词: Geodesy
; Geodetic satellites
; Global positioning system
; Shear flow
; Structural geology
; Balanced cross sections
; Colombia
; Crustal shortening
; Crustal thickness
; Eastern Cordillera
; Faster convergence
; GPS measurements
; Mountain ranges
; Tectonics
英文摘要: GPS velocities across the northeast trending Eastern Cordillera of Colombia show oblique convergence at 8.8 ± 1.7 mm/yr, consisting of 8.0 ± 1.7 mm/yr of right-lateral strike-slip shear along the mountain range and 3.7 ± 0.3 mm/yr of northwest southeast shortening. Faster convergence occurs only at the northeast end of the Cordillera, where its eastern edge trends northwest and the highest mountains lie. The strike-slip shear corroborates geologic work suggesting such movement southwest and northeast of the range. Given the ~200 km width of the Eastern Cordillera, the ~100–150 km of crustal shortening inferred from balanced cross sections and implied by recent estimates of crustal thickness would require ~25–40 Myr of shortening at ~4 mm/yr. The present-day GPS measurements, therefore, are inconsistent with the inference, based on paleobotanical observations that the entire Eastern Cordillera rose 1500–2500 m since 3–6 Ma and called for a different interpretation of those data. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982282528&doi=10.1002%2f2016GL069795&partnerID=40&md5=efc869aa085cf48e90317cf328cd1493
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9692
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: GNSS GeoRED Project, Center for Processing and Analysis of Geodetic Data, Colombian Geological Survey, Bogotá, Colombia
Recommended Citation:
Mora-Páez H.,Mencin D.J.,Molnar P.,et al. GPS velocities and the construction of the Eastern Cordillera of the Colombian Andes[J]. Geophysical Research Letters,2016-01-01,43(16).