摘要
Objective Siliceous rocks can form in different positions in the oceanic plate,for example,the oceanic spreading ridge center,the oceanic basin and the continental margin.The geochemistry of siliceous rocks is very sensitive to the depositional environment,which can thus be used to constrain the tectonic setting of related rocks(Garbán et al.,2017).
基金
supported by the National Natural Science Foundation of China(grant Nos.42072267,41602229,41802234)
the Fundamental Research Funds for the Central Universities,CHD(300102279201,300102279104)
the Natural Science Foundation of Shaanxi Province,China(2019JQ-090,2019JQ-209)。
