See Poggend., 'Annalen der Physic', bd. xxxix., s.
105; and on the rings of aragonite deposited from solution, see Gustav Rose
in vol. xlii., p. 354, of the same journal.
I would here wish to make special mention of Parian and Carrara marbles,
which have acquired such celebrity from the noble works of art into which
they have been converted, and which have too long been considered in our
geognostic collections as the main types of primitive limestone. The action
of granite has been manifested sometimes by immediate contact, as in the
Pyrenees,* and sometimes, as in the main land of Greece, and in the insular
groups in the gean Sea, through the intermediate layers of gneiss or mica
slate.
[footnote] *Beds of granular limestone in the granite at Port d'Oo and in
the Mont de Labourd. See Charpentier, 'Constitution Geologique des
Pyrenes', p. 144, 146.
Both cases presuppose a simultaneous but heterogeneous process of
transformation.
p 263
In Attica, in the island of Euboea, and in the Peloponnesus, it has been
remarked, "that the limestone, when superposed on mica slate, is beautiful
and crystalline in proportion to the purity of the latter substance and to
the smallness of its argillaceous contents; and, as is well known, this
rock, together with beds of gneiss, appears at many points, at a
considerable depth below the surface, in the islands of Paros and
Antiparos.
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