成都理工大学学报（自然科学版）2017，Vol.44Issue(3)：293-304,12.DOI:10.3969/j.issn.1671-9727.2017.03.03
地球化学方法在硅质岩成因与构造背景研究中的进展及问题
Progress and problems in the geochemical study on chert genesis for interpretation of tectonic background
摘要
Abstract
Silicolite is often used to discuss its genesis and tectonic setting duo to its immobility during the diagenesis and resistant to erosion.In the paper,the origin and major,trace,rare earth elements,Si and Sr-Nd isotopic compositions of cherts from different depositional environments are summarized.The progress and problems in the research of the origin and tectonic setting of cherts and some factors which caused its original multiple solution interpretation are also discussed.Diagenetic process study indicates that the SiO2 acts as a diluent of the major elements and REEs during the depositional processes.As terrigenous materials of TiO2,Al2O3,MgO and K2O,the influence from the diagenetic silicification is weaker than that of Fe2O3,MnO,CaO,Na2O and P2O5.It reveals that the influence from the diagenetic silicification for shale or mudstone is stronger than that for chert,and its REEs are controlled not only by the deposition environments but also by the degree of the diagenetic silicification.关键词
硅质岩/地球化学/成因/成岩作用/构造背景Key words
cherts/geochemistry/origin/diagenesis/tectonic setting分类
天文与地球科学引用本文复制引用
张聪,黄虎,侯明才..地球化学方法在硅质岩成因与构造背景研究中的进展及问题[J].成都理工大学学报（自然科学版）,2017,44(3):293-304,12.基金项目
国家自然科学基金项目(41502109) （41502109）
国家“973”计划项目(2015CB453000) （2015CB453000）
中国地质调查项目(DD20160178011). （DD20160178011）
