后期蚀变 meaning in English

paulopost alteration

We deduce that it is a relic old crust that was brought upwards during the formation of neo - tethyan ophiolite . the step heating 40ar - ' 9ar spectra show that during 100ma , luobusha ophiolite suffered intensely alternation , which affected distinctly the k - ar system ; during 771ma some basalt formed in the country rock of xiubugabu ophiolite ; during 55ma , the pillow basalt of rikangba ophiolite affected by a strong thermal event ; all the variety of ages illustrates possible impacts of the subduction - collision between india and eurasia . through dissecting mainly the gabbro of luobusa ophiolite and studying the 40ar / 39ar
~ ( 40 ) ar ~ ( 39 ) ar阶段升温年龄图谱显示， 100ma左右罗布莎岩体经历了较强的后期蚀变作用，对其k ? ar体系造成明显影响； 77 1ma休古嘎布岩体围岩中形成玄武质火山集块岩； 55ma日康巴岩体岩石枕状玄武岩受到较强热事件影响；这些~ ( 40 ) ar - ~ ( 39 ) ar年龄上的变化显示了印度板块与欧亚板块俯冲?碰撞对该区的强烈影响。