DOI: 10.1002/2014GL060023
论文题名: Effects of various lithospheric yield stresses and different mantle-heating modes on the breakup of the Pangea supercontinent
作者: Yoshida M.
刊名: Geophysical Research Letters
ISSN: 0094-10110
EISSN: 1944-9841
出版年: 2014
卷: 41, 期: 9 起始页码: 3060
结束页码: 3067
语种: 英语
英文关键词: continental breakup
; continental drift
; mantle convection
; numerical simulation
; Pangea
; supercontinent
Scopus关键词: Computer simulation
; Numerical models
; Yield stress
; Continental break-up
; Continental drift
; Mantle convection
; Pangea
; Supercontinents
; Heating
; continental breakup
; continental drift
; core-mantle boundary
; mantle convection
; mantle plume
; numerical model
; Pangaea
; stress-strain relationship
英文摘要: Numerical simulations of three-dimensional spherical mantle convection were performed to investigate the effects of various lithospheric yield stresses and two different mantle-heating modes (i.e., mixed heating from the bottom and interior and purely internal heating) on the breakup of the Pangea supercontinent and the subsequent continental drift for the past 200 Myr. Results show that the continental breakup and subsequent continental drift are accomplished in mantle convection models with two different heating modes. This implies that active upwelling plumes from the core-mantle boundary are not necessarily required for the breakup of Pangea. In addition, I found that the continental breakup is only realized when choosing a moderate value of the yield stress (~120 MPa). The bound on the yield stress derived in the present study will potentially enable the self-consistent reconstruction of continental breakup and drift as well as the accompanying pattern on mantle convection since 200 Ma. Key Points Simulations of mantle convection with the Pangea supercontinent are performed Various yield stresses and two different mantle-heating modes are considered Continental breakup is realized in the model with a very limited yield stress © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901918311&doi=10.1002%2f2014GL060023&partnerID=40&md5=f9319fb5caf6c03d0609bb7ccfc1fb06
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7374
Appears in Collections: 气候减缓与适应
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作者单位: Department of Deep Earth Structure, Dynamics Research, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
Recommended Citation:
Yoshida M.. Effects of various lithospheric yield stresses and different mantle-heating modes on the breakup of the Pangea supercontinent[J]. Geophysical Research Letters,2014-01-01,41(9).