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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Carbonation of subduction-zone serpentinite (high-pressure ophicarbonate; Ligurian Western Alps) and implications for the deep carbon cycling
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Carbonation of subduction-zone serpentinite (high-pressure ophicarbonate; Ligurian Western Alps) and implications for the deep carbon cycling

机译：俯冲带蛇纹岩的碳酸盐化（高压碳酸盐;利古里亚西部阿尔卑斯山）及其对深层碳循环的影响

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Much of the long-term carbon cycle in solid earth occurs in subduction zones, where processes of devolatilization, partial melting of carbonated rocks, and dissolution of carbonate minerals lead to the return of CO2 to the atmosphere via volcanic degassing. Release of COH fluids from hydrous and carbonate minerals influences C recycling and magmatism at subduction zones. Contradictory interpretations exist regarding the retention/storage of C in subducting plates and in the forearc to subarc mantle. Several lines of evidence indicate mobility of C, of uncertain magnitude, in forearcs. A poorly constrained fraction of the 40-115 Mt/yr of C initially subducted is released into fluids (by decarbonation and/or carbonate dissolution) and 18-43 Mt/yr is returned at arc volcanoes. Current estimates suggest the amount of C released into subduction fluids is greater than that degassed at arc volcanoes: the imbalance could reflect C subduction into the deeper mantle, beyond subarc regions, or storage of C in forearc/subarc reservoirs.
机译：固体土壤中的大部分长期碳循环都发生在俯冲带，在该带俯冲作用，碳酸盐岩的部分融化以及碳酸盐矿物的溶解导致火山脱气将CO2返回大气。从含水和碳酸盐矿物中释放出COH流体会影响俯冲带的碳循环和岩浆作用。关于俯冲板中和前弧至弧下地幔中C的保留/存储存在矛盾的解释。几条证据表明，前臂中C的迁移率具有不确定的大小。最初被俯冲的40-115 Mt / yr的C的约束较弱的部分被释放到流体中（通过脱碳和/或碳酸盐溶解），并且18-43 Mt / yr的碳被返回到弧形火山中。目前的估计表明，俯冲流体中释放的碳量大于弧形火山中脱气的量：这种不平衡可能反映了碳俯冲到深部地幔中，亚弧区以外或在前臂/南方储层中的碳存储。

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