DOI: 10.1016/j.epsl.2017.11.039
Scopus记录号: 2-s2.0-85034997513
论文题名: Estimating the formation age distribution of continental crust by unmixing zircon ages
作者: Korenaga J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 482 起始页码: 388
结束页码: 395
语种: 英语
英文关键词: continental growth
; crustal recycling
; plate tectonics
Scopus关键词: Carbon
; Recycling
; Silicate minerals
; Tectonics
; Age distribution
; Atmospheric evolution
; Continental crusts
; Crustal formation
; Crustal recycling
; Deep carbon cycles
; Earth's surface
; Large deviations
; Zircon
; age structure
; continental crust
; crustal recycling
; geochronology
; plate tectonics
; zircon
英文摘要: Continental crust provides first-order control on Earth's surface environment, enabling the presence of stable dry landmasses surrounded by deep oceans. The evolution of continental crust is important for atmospheric evolution, because continental crust is an essential component of deep carbon cycle and is likely to have played a critical role in the oxygenation of the atmosphere. Geochemical information stored in the mineral zircon, known for its resilience to diagenesis and metamorphism, has been central to ongoing debates on the genesis and evolution of continental crust. However, correction for crustal reworking, which is the most critical step when estimating original formation ages, has been incorrectly formulated, undermining the significance of previous estimates. Here I suggest a simple yet promising approach for reworking correction using the global compilation of zircon data. The present-day distribution of crustal formation age estimated by the new “unmixing” method serves as the lower bound to the true crustal growth, and large deviations from growth models based on mantle depletion imply the important role of crustal recycling through the Earth history. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110099
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Geology and Geophysics, Yale University, P.O. Box 208109, New Haven, CT 06520-8109, United States
Recommended Citation:
Korenaga J.. Estimating the formation age distribution of continental crust by unmixing zircon ages[J]. Earth and Planetary Science Letters,2018-01-01,482