有机碳和有机分子碳同位素的地球化学意义

有机碳和有机分子碳同位素组成的研究不仅在沉积地层对比，油－油，油－源对比研究方向发挥了独特作用，而且在古气候，古环境研究方面更具有广阔的应用剪影。开展对全球气候变化及全球碳循环有重要意义的有机碳碳同位素组成及分布研究和对生物演化，恢复古生态，古环境有重要意义的化石及沉积物中有机分子的碳同位素成及分布研究已势在必行。

THE GEOCHEMICAL SIGNIFICANCE OF THE CARBON ISOTOPIC COMPOSITIONS OF ORGANIC CARBON AND ORGANIC MOLECULES

The studies of the carbon isotopic compositions of the organic carbon and organic molecules not only have special functions on the researches of the stratigraphic correlation and the oil oil and oil source rock correlations, but also widely applied in the investigations of the paleoclimate and paleoenvironment. It is necessary to study the carbon isotopic compositions and distributions of the organic carbons which are significant for the investigations of the global climate changes and global carbon cycle. It is also important to study the carbon isotopic compositions and distributions of the organic molecules in fossils and deposits which are significant for the researches of the biotic evolution and the reconstruction of paleoecology and paleoenvironment, and for the tracing of organic precursors of the organic materials in oils and source rocks.