A man must for years examine for himself great piles of superimposed strata, and watch the sea at work grinding down old rocks and making fresh sediment, before he can hope to comprehend anything of the lapse of time, the monuments of which we see around us.
Feet Palaeozoic strata (not including igneous beds)..57,154 Secondary strata................................13,190 Tertiary strata..................................2,240
But the amount of denudation which the strata have in many places suffered, independently of the rate of accumulation of the degraded matter, probably offers the best evidence of the lapse of time.
The Craven fault, for instance, extends for upwards of 30 miles, and along this line the vertical displacement of the strata has varied from 600 to 3000 feet.
Though it must be admitted that the denudation of the Weald has been a mere trifle, in comparison with that which has removed masses of our palaeozoic strata, in parts ten thousand feet in thickness, as shown in Prof.
The evidence of rarity preceding extinction, is more striking in the successive tertiary strata, as remarked by several able observers; it has often been found that a shell very common in a tertiary stratum is now most rare, and has even long been thought extinct.
Sulivan, R.N., has found numerous fossil bones, embedded in regular strata, on the banks of the R.
It could not have been otherwise after the terrible derangement of the atmospheric strata
, and the dispersion of the enormous quantity of vapor arising from the combustion of
Slowly it dawned on me that since passing through the ice strata
it had been above.
The proletariat, the lowest stratum of our present society, cannot stir, cannot raise itself up, without the whole superincumbent strata
of official society being sprung into the air.
This darkness also showed that the projectile had passed the atmospheric strata, for the diffused light spread in the air would have been reflected on the metal walls, which reflection was wanting.
Its light, rendered bluish by the thick strata of the atmosphere was less intense than that of the crescent moon, but it was of considerable dimensions, and looked like an enormous arch stretched across the firmament.