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| Charles Lyell |
Charles Lyell
(1797–1875). Scientific Papers.
Vol. 38, pp. 398-405 of
The Harvard Classics
We wonder if the man
who worried about the "scientifical" prediction that "The
sun's heat will give out in ten million years more," had read
Lyell on the gradual changes in the earth's surface.
(Sir Charles Lyell
born Nov. 14, 1797.)
II.
Uniformity Of Change
Supposed
Alternate Periods of Repose and Disorder—Observed Facts in which
this Doctrine has Originated—These may be Explained by Supposing a
Uniform and Uninterrupted Series of Changes—Threefold Consideration
of this Subject: First, in Reference to the Laws which Govern the
Formation of Fossiliferous Strata, and the Shifting of the Areas of
Sedimentary Deposition; Secondly, in Reference to the Living
Creation, Extinction of Species, and Origin of New Animals and
Plants; Thirdly, in Reference to the Changes Produced in the Earth’s
Crust by the Continuance of Subterranean Movements in Certain Areas,
and their Transference after Long Periods to New Areas—On the
Combined Influence of all these Modes and Causes of Change in
Producing Breaks and Chasms in the Chain of Records—Concluding
Remarks on the Identity of the Ancient and Present System of
Terrestrial Changes.
ORIGIN of
the doctrine of alternate periods of repose and disorder.—It
has been truly observed, that when we arrange the fossiliferous
formations in chronological order, they constitute a broken and
defective series of monuments: we pass without any intermediate
gradations from systems of strata which are horizontal, to other
systems which are highly inclined—from rocks of peculiar mineral
composition to others which have a character wholly distinct—from
one assemblage of organic remains to another, in which frequently
nearly all the species, and a large part of the genera, are
different. These violations of continuity are so common as to
constitute in most regions the rule rather than the exception, and
they have been considered by many geologists as conclusive in favour
of sudden revolutions in the inanimate and animate world. We have
already seen that according to the speculations of some writers,
there have been in the past history of the planet alternate periods
of tranquillity and convulsion, the former enduring for ages, and
resembling the state of things now experienced by man; the other
brief, transient, and paroxysmal, giving rise to new mountains, seas,
and valleys, annihilating one set of organic beings, and ushering in
the creation of another.



