The red notebook of Charles Darwin / edited, with an introduction and notes by Sandra Herbert.

  • Charles Darwin
Date:
1980
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Licence: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

Credit: The red notebook of Charles Darwin / edited, with an introduction and notes by Sandra Herbert. Source: Wellcome Collection.

    54/184 (page 40)
    40 SANDRA HERBERT No Faults in Patagonia[^J enormous extent; if lowered again & covered no sign of upheaval | 38e To Cleavage add other instances in old world of symetrical structure. East India Archipelago. /^Aleutian Arch. —J V. Fitton. Australia; cases in Europe. — Auvergne, very little Pumice, though Trachyte, same fact in Galapagos. Daubeny P 24^^ [Y. back of page 1 of New Zealand Geological Notes.J'^^ at St. Helena. This structure was very clear at base of great lava cliffs^® CFig. l] line of high tidal action NB. patches of modern Conglomerates [^Fig. 2] 39e The action of sea A.B. will be to eat in the land in line of highest tidal action, this will at length be checked by increased vertical {height) thickness (DZ) of mass to be removed & from the resistance offered to the greater lateral extension of the waves, by the part beneath the band of greatest action not having been worn away. — If the level of the sea was to sink by very slow & gradual movements to line (2). The part (O) which was before beneath band, of greatest action, would now by degrees be exposed