 | Royal Colonial Institute (Great Britain) - Colonies - 1874 - 308 pages
...examination of the country is, that here we see the last stage of a process that has been going on during the whole period of the elevation of the Andes...ocean. At the commencement of this period, the greater portion of the valleys of the Amazon, Orinoco, and La Plata, must have formed a part of the ocean separating... | |
 | D. Graham Burnett - History - 2000 - 340 pages
...n. 6. 98. JRGS 6 (1836): 255. Webber cited Wallace on the theory of Guiana as a former archipelago: "The greater part of the valleys of the Amazon and...the Orinoco as well as of La Plata must have formed part of the ocean, separating the elevated lands into groups of islands." Webber, British Guiana, 61.... | |
 | Michael Shermer - Science - 2002 - 448 pages
...stratigraphic arrangements, concluding "that here we see the last stage of a process that has been going on, during the whole period of the elevation of the Andes...the mountains of Brazil and Guiana, from the ocean." For how long this had been ongoing Wallace could not ascertain, "till the country has been more thoroughly... | |
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The general impression produced by the examination of the country is, that here we see the last stage of a process that has been going on during the whole period of the elevation of the Andes and the mountains of Brazil and Guiana from the ocean. 