 This appears undoubtedly the earliest attempt to establish the important and fundamental geological fact that the same series of rocks succeed each other in a regular order throughout extensive tracts of country, and to elucidate the geological structure...  Cymmrodorion Record Series - الصفحة xviiبواسطة Honourable Society of Cymmrodorion (London, England) - 1892عرض كامل - لمحة عن هذا الكتاب
 | William Daniel Conybeare, William Phillips - 1822 - عدد الصفحات: 568
...coal and the limestone which accompanies them through the whole of South Wales, and pointed out the connections of this tract with similar districts in...throughout extensive tracts of country, and to elucidate thfe geological structure thus indicated ; but hi.s work having continued in manuscript till recently... | |
 | George Owen - 1994 - عدد الصفحات: 394
[ عذرًا، محتوى هذه الصفحة مقيَّد ] | |
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