globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2019.115992
论文题名:
Survival of graphitized petrogenic organic carbon through multiple erosional cycles
作者: Sparkes R.B.; Hovius N.; Galy A.; Liu J.T.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 531
语种: 英语
中文关键词: erosion ; graphite ; organic carbon ; orogeny ; Raman spectroscopy ; recycling
英文关键词: Crystallinity ; Erosion ; Graphite ; Raman spectroscopy ; Recycling ; Sediments ; Submarine geology ; Carbonaceous materials ; Chemical degradation ; Geological history ; Geological time ; High grade metamorphism ; Marine sediments ; orogeny ; Submarine canyon ; Organic carbon ; erosion ; graphite ; marine sediment ; metamorphism ; organic carbon ; orogeny ; petrogenesis ; Raman spectroscopy ; survival ; Gaoping Submarine Canyon ; Pacific Ocean ; South China Sea ; Taiwan
英文摘要: Graphite forms the endpoint for organic carbon metamorphism; it is extremely resilient to physical, biological and chemical degradation. Carbonaceous materials (CM) contained within sediments, collected across Taiwan and from the Gaoping submarine canyon, were analyzed using Raman spectroscopy to determine the crystallinity. This allowed the erosional and orogenic movements of petrogenic organic carbon (OCpetro) during the Taiwanese orogeny to be deduced. After automatically fitting and classifying spectra, the distribution of four groups of CM within the sediments provides evidence that many forms of OCpetro have survived at least one previous cycle of erosion, transport and burial before forming rocks in the Western Foothills of the island. There is extensive detrital graphite present in rocks that have not experienced high-grade metamorphism, and graphite flakes are also found in recently deposited marine sediments off Taiwan. The tectonic and geological history of the island shows that these graphite flakes must have survived at least three episodes of recycling. Therefore, transformation to graphite during burial and orogeny is a mechanism for stabilizing organic carbon over geological time, removing biospheric carbon from the active carbon cycle and protecting it from oxidation during future erosion events. © 2019 The Authors
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165278
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作者单位: Ecology and Environment Research Centre, Department of Natural Sciences, Manchester Metropolitan University, Manchester, United Kingdom; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom; GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam, 14473, Germany; CRPG, CNRS, Université de Lorraine BP20, Vandœuvre-lès-Nancy, 54501, France; Department of Oceanography, National Sun Yat-sen University, Kaohsiung, Taiwan

Recommended Citation:
Sparkes R.B.,Hovius N.,Galy A.,et al. Survival of graphitized petrogenic organic carbon through multiple erosional cycles[J]. Earth and Planetary Science Letters,2020-01-01,531
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