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根据崇安盆地粒状碎斑熔岩的地质地球化学特征和水-岩氧同位素相互作用的研究,发现在盆地范围内粒状碎斑熔岩曾经历过不同程度的非平衡水-岩氧同位素交换。但是,除古楼-腾云尖、黎口和岚谷外,其他地区水-岩相互作用的规模都不太大。利用缓冲开放系统模式估计古楼-腾云尖一带粒状碎斑熔岩的水-岩相互作用持续时间 t/Ma 大约为0.42—0.44,石英与系统之间的氧同位素平衡程度接近0.125—0.130,相应的有效水-岩比大致为0.13—0.14。
According to the geo-geochemical characteristics and the water-rock oxygen isotope interaction of grainy lava in the Chong’an Basin, it has been found that grainy lava in the basin has undergone different degrees of non-equilibrium water-rock oxygen isotope exchange. However, in addition to the ancient buildings - Tengyunjian, Likou and Lan-valley, the water-rock interaction in other areas is not too large. The open-water system model is used to estimate the water-rock interaction t / Ma, t / Ma about 0.42-0.44, between granite-tengyunjian area and the oxygen isotope equilibria between quartz and system close to 0.125-0.130. Correspondingly, The effective water-rock ratio is roughly 0.13-0.14.