DOI: 10.1002/2016GL068182
论文题名: Near-axis crustal structure and thickness of the Endeavour Segment, Juan de Fuca Ridge
作者: Soule D. ; Wilcock W.S.D. ; Toomey D.R. ; Hooft E.E.E. ; Weekly R.T.
刊名: Geophysical Research Letters
ISSN: 0094-8973
EISSN: 1944-8704
出版年: 2016
卷: 43, 期: 11 起始页码: 5688
结束页码: 5695
语种: 英语
英文关键词: crustal thickness
; Juan de Fuca Ridge
; ocean spreading center
; seismic tomography
Scopus关键词: Clay alteration
; Seismology
; Crustal structure
; Crustal thickness
; Hydrothermal alterations
; Juan de Fuca Ridge
; Ocean spreading center
; Ridge propagation
; Seismic tomography
; Sharp boundaries
; Structural geology
英文摘要: A model of crustal thickness and lower crustal velocities is obtained for crustal ages of 0.1–1.2 Ma on the Endeavour Segment of the Juan de Fuca Ridge by inverting travel times of crustal paths and non-ridge-crossing wide-angle Moho reflections obtained from a three-dimensional tomographic experiment. The crust is thicker by 0.5–1 km beneath a 200 m high plateau that extends across the segment center. This feature is consistent with the influence of the proposed Heckle melt anomaly on the spreading center. The history of ridge propagation on the Cobb overlapping spreading center may also have influenced the formation of the plateau. The sharp boundaries of the plateau and crustal thickness anomaly suggest that melt transport is predominantly upward in the crust. Lower crustal velocities are lower at the ends of the segment, likely due to increased hydrothermal alteration in regions influenced by overlapping spreading centers, and possibly increased magmatic differentiation. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977454070&doi=10.1002%2f2016GL068182&partnerID=40&md5=4c7fba9c38b738734de6a40ff7912cd1
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9936
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: School of Oceanography, University of Washington, Seattle, WA, United States
Recommended Citation:
Soule D.,Wilcock W.S.D.,Toomey D.R.,et al. Near-axis crustal structure and thickness of the Endeavour Segment, Juan de Fuca Ridge[J]. Geophysical Research Letters,2016-01-01,43(11).