最終更新日：2022/12/24
These deposits of sand have always been formed by the disintegration of a siliceous rock, and the fragments so formed have been sifted and transported by the agency of water, being finally deposited by a river either in the sea (marine deposits) or in lakes (lacustrine deposits), while the action of water, either during transport or after deposition, has frequently worn the individual particles into the shape of rounded grains.
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元となった例文
These
deposits
of
sand
have
always
been
formed
by
the
disintegration
of
a
siliceous
rock,
and
the
fragments
so
formed
have
been
sifted
and
transported
by
the
agency
of
water,
being
finally
deposited
by
a
river
either
in
the
sea
(marine
deposits)
or
in
lakes
(lacustrine
deposits),
while
the
action
of
water,
either
during
transport
or
after
deposition,
has
frequently
worn
the
individual
particles
into
the
shape
of
rounded
grains.
