Format:
1 Online-Ressource (ix, 114, xvi Seiten, 3773 KB)
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Illustrationen, Diagramme
Content:
Carbonates carried in subducting slabs may play a major role in sourcing and storing carbon in the deep Earth’s interior. Current estimates indicate that between 40 to 66 million tons of carbon per year enter subduction zones, but it is uncertain how much of it reaches the lower mantle. It appears that most of this carbon might be extracted from subducting slabs at the mantle wedge and only a limited amount continues deeper and eventually reaches the deep mantle. However, estimations on deeply subducted carbon broadly range from 0.0001 to 52 million tons of carbon per year. This disparity is primarily due to the limited understanding of the survival of carbonate minerals during their transport to deep mantle conditions. Indeed, carbon has very low solubility in mantle silicates, therefore it is expected to be stored primarily in accessory phases such as carbonates. Among those carbonates, magnesite (MgCO3), as a single phase, is the most stable under all mantle conditions. [...]
Note:
Dissertation University of Potsdam 2023
Additional Edition:
Erscheint auch als Druck-Ausgabe Libon, Lélia Stability of magnesite in the earth lower mantle Potsdam, 2023
Language:
English
Keywords:
Hochschulschrift
DOI:
10.25932/publishup-60461
URN:
urn:nbn:de:kobv:517-opus4-604616
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