珊瑚礁的成岩作用

发布时间：2018-03-14 10:14

本文选题：珊瑚礁　切入点：成岩作用　出处：《地球科学进展》2017年03期 　论文类型：期刊论文

【摘要】：珊瑚礁作为古环境记录的良好载体,时常受到成岩作用的制约,正确认识和评价成岩作用,是开展珊瑚礁古环境重建的关键。珊瑚礁成岩作用主要包括胶结作用、溶解作用、新生变形作用和白云岩化作用等类型。一方面,成岩作用本身可记录珊瑚礁经历的海平面升降、气候变化、海水性质改变、热液改造、微生物活动等地质过程,利用成岩演化过程可恢复古环境变化过程;另一方面,成岩作用又对珊瑚礁记录的原始环境信息产生了破坏,恢复古环境时需识别成岩作用对其影响的程度。在未来研究中,应加强成岩作用与现代气候环境、海平面变化、大气淡水改造、微生物活动的关系研究,以期提供更准确、更长时间序列的珊瑚礁古环境记录。
[Abstract]:As a good carrier of paleoenvironmental records, coral reefs are often restricted by diagenesis. To correctly understand and evaluate diagenesis is the key to carry out the reconstruction of coral reef paleoenvironment. Coral reef diagenesis mainly includes cementation and dissolution. On the one hand, diagenesis itself can record the geological processes experienced by coral reefs, such as sea level rise and fall, climate change, changes in the nature of seawater, hydrothermal transformation, microbial activity, etc. The process of diagenetic evolution can be used to restore the process of paleoenvironmental change; on the other hand, diagenesis destroys the original environmental information recorded by coral reefs, and the extent to which diagenesis affects the paleoenvironment needs to be identified in future studies. The relationship between diagenesis and modern climate environment, sea level change, atmospheric fresh water transformation and microbial activity should be strengthened in order to provide more accurate and longer time series records of coral reef paleoenvironment.
【作者单位】：广西大学海洋学院;广西南海珊瑚礁研究重点实验室;广西大学珊瑚礁研究中心;南京大学地球科学与工程学院;
【基金】：国家自然科学基金重大研究计划重点支持项目“珊瑚礁千米深钻记录的西沙碳酸盐台地形成演化和环境变迁史”(编号:91428203) 广西珊瑚礁资源与环境八桂学者项目(编号:2014BGXZGX03)资助~~
【分类号】：P736.3

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