问题求解 是一道老题 被别人问住了

s

His studies of ice-polished rocks in his Alpine homeland, far outside the range of presnet-day glaciers, led Louis Agassiz in 1837 （to propose the concept of an age in which great ice sheet existed in what are now temperate areas.）

这个句子是正确的，我不太明白括号里部分的句子结构。concept of 后面的部分都是concept的内容，an age是in which这个定语从句的中心词对吧？ in what are now temperate areas是对前面的哪部分做说明？ age? ice sheet? 我总觉得如果简化一下括号里的部分就变成了 to propose the concept of age ....in what are now temperate areas. age不可能变成areas的吧？！ 所以万分疑惑，这个in what are now temperate areas到底修饰说明哪一部分呢？
诚心求解 万分感谢

秋天来了

in what are= in the areas which are

s

回复 2# 秋天来了


    那么就是 concept of an age in which great ice sheet existed in the areas which are now temperate areas
那么这个句子该如何翻译呢 尤其是age

charlottebaby

回复 3# s


    his studies led LS to propose the concept of an age.

秋天来了

回复 3# s


    他的研究使LS提出一个“冰河世纪”的概念，

秋天来了

在这个冰河世纪中，现在的温带是以前的大冰层

s

回复 6# 秋天来了


    明白了，太感谢了

秋天来了

回复 7# s


    客气了