TY  - GEN
A1  - Sparkes, Robert B.
A1  - Hovius, Niels
A1  - Galy, Albert
A1  - Liu, James T.
T1  - Survival of graphitized petrogenic organic carbon through multiple erosional cycles
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - 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.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1223 
KW  - graphite
KW  - organic carbon
KW  - orogeny
KW  - recycling
KW  - Raman spectroscopy
KW  - erosion
Y1  - 2022
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/53354
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-533541
SN  - 1866-8372
ER  -