Abstract—The paper studies carbon transformation and transfer processes in the crust and mantle. Sediments dragged into subduction zones are dewatered, broken down, and altered by metamorphic processes. Some carbon compounds are immersed in the sublithospheric mantle and transported by convective currents into the rift zones of mid-ocean ridges. There they are transformed again, forming new chemical compounds, and are carried out by hydrothermal fluids to the surface in the form of carbonates, various hydrocarbons, and carbon dioxide dissolved in the fluid. Precipitated from solutions, they are deposited on the seafloor as sediment, forming carbonate and carbon-containing structural–material complexes. As a result of the multistage physicochemical transformation mechanism in the crust–mantle regions of the Earth, carbon compounds acquire features of abiogenic (mantle) origin, although they are initially exogenic formations. The crust–mantle carbon cycle is part of the global cyclic transfer of carbon from the atmosphere to the mantle and vice versa.

中文翻译：

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壳幔碳循环与生物成因

摘要-本文研究了地壳和地幔中的碳转化和转移过程。被拖入俯冲带的沉积物通过变质过程脱水，分解和改变。一些碳化合物浸没在岩石圈以下的地幔中，并通过对流将其输送到中海脊的裂谷带。它们在那里再次转化，形成新的化学化合物，并由热液以碳酸盐，各种碳氢化合物和溶解在流体中的二氧化碳的形式带到表面。它们从溶液中沉淀出来，作为沉淀物沉积在海底，形成碳酸盐和含碳的结构材料复合物。由于地球地壳幔区域的多阶段物理化学转化机制，尽管碳化合物最初是外源性形成，但它们具有非生物（地幔）起源的特征。地壳－地幔碳循环是碳从大气到地幔的全球循环转移的一部分，反之亦然。