- I set out on a riding excursion, for the
purpose of geologizing the basal parts of the Andes, which
alone at this time of the year are not shut up by the winter
snow.
Our first day's ride was northward along the sea-coast.
After dark we reached the Hacienda of Quintero,
the estate which formerly belonged to Lord Cochrane. My
object in coming here was to see the great beds of shells,
which stand some yards above the level of the sea, and are
burnt for lime. The proofs of the elevation of this whole
line of coast are unequivocal: at the height of a few hundred
feet old-looking shells are numerous, and I found some
at 1300 feet. These shells either lie loose on the surface, or
are embedded in a reddish-black vegetable mould. I was
much surprised to find under the microscope that this vegetable
mould is really marine mud, full of minute particles of
organic bodies.
15th. - We returned towards the valley of Quillota. The
country was exceedingly pleasant; just such as poets would
call pastoral: green open lawns, separated by small valleys
with rivulets, and the cottages, we may suppose of the shepherds
scattered on the hill-sides. We were obliged to cross
the ridge of the Chilicauquen. At its base there were many
fine evergreen forest-trees, but these flourished only in the
ravines, where there was running water. Any person who
had seen only the country near Valparaiso, would never have
imagined that there had been such picturesque spots in Chile.
As soon as we reached the brow of the Sierra, the valley of
Quillota was immediately under our feet. The prospect was
one of remarkable artificial luxuriance. The valley is very
broad and quite flat, and is thus easily irrigated in all parts.
The little square gardens are crowded with orange and olive
trees, and every sort of vegetable. On each side huge bare
mountains rise, and this from the contrast renders the patchwork
valley the more pleasing. Whoever called "Valparaiso"
the "Valley of Paradise," must have been thinking
of Quillota. We crossed over to the Hacienda de San Isidro,
situated at the very foot of the Bell Mountain.
Chile, as may be seen in the maps, is a narrow strip of
land between the Cordillera and the Pacific; and this strip
is itself traversed by several mountain-lines, which in this
part run parallel to the great range. Between these outer
lines and the main Cordillera, a succession of level basins,
generally opening into each other by narrow passages, extend
far to the southward: in these, the principal towns are
situated, as San Felipe, Santiago, San Fernando. These basins
or plains, together with the transverse flat valleys (like that
of Quillota) which connect them with the coast, I have no
doubt are the bottoms of ancient inlets and deep bays, such
as at the present day intersect every part of Tierra del Fuego
and the western coast.
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