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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from The Voyage of the Beagle by Charles Darwin: thickness, but is of little extent. These modern beds rest on an
ancient tertiary formation containing shells, apparently all
extinct. Although I examined so many hundred miles of
coast on the Pacific, as well as Atlantic side of the continent,
I found no regular strata containing sea-shells of
recent species, excepting at this place, and at a few points
northward on the road to Guasco. This fact appears to me
highly remarkable; for the explanation generally given by
geologists, of the absence in any district of stratified
fossiliferous deposits of a given period, namely, that the
surface then existed as dry land, is not here applicable; for we
The Voyage of the Beagle |
