Matches in SemOpenAlex for { <https://semopenalex.org/work/W3043663842> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W3043663842 abstract "<p>Long-term oscillations of the Earth&#8217;s atmospheric carbon dioxide concentration and climate are intrinsically linked to tectonic plate motion controlling CO<sub>2</sub> uptake in rocks, their transport into the Earth&#8217;s mantle and recycling back into the atmosphere by volcanic activity. In this long-term deep carbon cycle, the efficiency of mantle ingassing is controlled by the stability of carbon carrier phases at subduction zone pressure-temperature conditions, during deformation and their interaction with subduction zone dehydration fluids. However, the current understanding of carbonate stability under these conditions is controversial. This is reflected by studies predicting carbonate transport deep into the asthenospheric mantle [1, 2] in contrast to more recently postulated shallow-depth carbon release from subducting slabs [e.g. 3]. Some of this controversy is related to the lack of available field sites that allow for the quantification of subduction-related decarbonation and its driving force. Here we present novel observations on the release of carbon during subduction of previously carbonated, ultramafic, oceanic lithosphere. Our observations are based on a recently discovered, exceptionally well-exposed, outcrop in northern Norway [4] containing frozen-in decarbonation reaction textures at the km scale. Our observations and textural analyses indicate breakdown of magnesium carbonate and serpentine to secondary olivine at depths shallower than 20 km. Secondary olivine is present as up to fist-sized nodules pseudomorphically replacing magnesite and as veins delineating escape pathways for the carbon-bearing aqueous fluid. We present first field observations and reaction textures and will discuss implications for the efficiency of carbon transport into the Earth&#8217;s mantle by subduction of carbonate-bearing oceanic lithosphere.</p><p>[1] Kerrick, D.M. & Connolly, J.A.D. (1998). Geology <strong>26</strong>, 375-378.</p><p>[2] Dasgupta, R. & Hirschmann, M.M. (2010). EPSL <strong>298, </strong>1-13.</p><p>[3] Kelemen, P.B. & Manning, C.E. (2015). PNAS <strong>112</strong>, E3997-E4006.</p><p>[4] Beinlich, A., Pl&#252;mper, O., H&#246;velmann, J., Austrheim, H. & Jamtveit, B. (2012). Terra Nova <strong>24, </strong>446-455.</p>" @default.
- W3043663842 created "2020-07-23" @default.
- W3043663842 creator A5057646437 @default.
- W3043663842 creator A5063326313 @default.
- W3043663842 creator A5064167813 @default.
- W3043663842 creator A5073570295 @default.
- W3043663842 date "2020-03-23" @default.
- W3043663842 modified "2023-09-25" @default.
- W3043663842 title "Shallow-depth slab decarbonation prevents recharge of the deep carbon cycle" @default.
- W3043663842 doi "https://doi.org/10.5194/egusphere-egu2020-1374" @default.
- W3043663842 hasPublicationYear "2020" @default.
- W3043663842 type Work @default.
- W3043663842 sameAs 3043663842 @default.
- W3043663842 citedByCount "0" @default.
- W3043663842 crossrefType "posted-content" @default.
- W3043663842 hasAuthorship W3043663842A5057646437 @default.
- W3043663842 hasAuthorship W3043663842A5063326313 @default.
- W3043663842 hasAuthorship W3043663842A5064167813 @default.
- W3043663842 hasAuthorship W3043663842A5073570295 @default.
- W3043663842 hasConcept C110872660 @default.
- W3043663842 hasConcept C113740112 @default.
- W3043663842 hasConcept C127313418 @default.
- W3043663842 hasConcept C127636831 @default.
- W3043663842 hasConcept C135559958 @default.
- W3043663842 hasConcept C165205528 @default.
- W3043663842 hasConcept C16942324 @default.
- W3043663842 hasConcept C17409809 @default.
- W3043663842 hasConcept C178790620 @default.
- W3043663842 hasConcept C185592680 @default.
- W3043663842 hasConcept C18903297 @default.
- W3043663842 hasConcept C195081551 @default.
- W3043663842 hasConcept C2779117930 @default.
- W3043663842 hasConcept C2780659211 @default.
- W3043663842 hasConcept C2781137303 @default.
- W3043663842 hasConcept C543218039 @default.
- W3043663842 hasConcept C58097730 @default.
- W3043663842 hasConcept C67236022 @default.
- W3043663842 hasConcept C6939412 @default.
- W3043663842 hasConcept C73462661 @default.
- W3043663842 hasConcept C77928131 @default.
- W3043663842 hasConcept C8058405 @default.
- W3043663842 hasConcept C84372278 @default.
- W3043663842 hasConcept C86803240 @default.
- W3043663842 hasConceptScore W3043663842C110872660 @default.
- W3043663842 hasConceptScore W3043663842C113740112 @default.
- W3043663842 hasConceptScore W3043663842C127313418 @default.
- W3043663842 hasConceptScore W3043663842C127636831 @default.
- W3043663842 hasConceptScore W3043663842C135559958 @default.
- W3043663842 hasConceptScore W3043663842C165205528 @default.
- W3043663842 hasConceptScore W3043663842C16942324 @default.
- W3043663842 hasConceptScore W3043663842C17409809 @default.
- W3043663842 hasConceptScore W3043663842C178790620 @default.
- W3043663842 hasConceptScore W3043663842C185592680 @default.
- W3043663842 hasConceptScore W3043663842C18903297 @default.
- W3043663842 hasConceptScore W3043663842C195081551 @default.
- W3043663842 hasConceptScore W3043663842C2779117930 @default.
- W3043663842 hasConceptScore W3043663842C2780659211 @default.
- W3043663842 hasConceptScore W3043663842C2781137303 @default.
- W3043663842 hasConceptScore W3043663842C543218039 @default.
- W3043663842 hasConceptScore W3043663842C58097730 @default.
- W3043663842 hasConceptScore W3043663842C67236022 @default.
- W3043663842 hasConceptScore W3043663842C6939412 @default.
- W3043663842 hasConceptScore W3043663842C73462661 @default.
- W3043663842 hasConceptScore W3043663842C77928131 @default.
- W3043663842 hasConceptScore W3043663842C8058405 @default.
- W3043663842 hasConceptScore W3043663842C84372278 @default.
- W3043663842 hasConceptScore W3043663842C86803240 @default.
- W3043663842 hasLocation W30436638421 @default.
- W3043663842 hasOpenAccess W3043663842 @default.
- W3043663842 hasPrimaryLocation W30436638421 @default.
- W3043663842 hasRelatedWork W10253776 @default.
- W3043663842 hasRelatedWork W13416467 @default.
- W3043663842 hasRelatedWork W15282534 @default.
- W3043663842 hasRelatedWork W22533595 @default.
- W3043663842 hasRelatedWork W24953805 @default.
- W3043663842 hasRelatedWork W27003106 @default.
- W3043663842 hasRelatedWork W35674007 @default.
- W3043663842 hasRelatedWork W36056677 @default.
- W3043663842 hasRelatedWork W7806937 @default.
- W3043663842 hasRelatedWork W992983 @default.
- W3043663842 isParatext "false" @default.
- W3043663842 isRetracted "false" @default.
- W3043663842 magId "3043663842" @default.
- W3043663842 workType "article" @default.