RECORD: Darwin, C. R. Geological diary: Cape Virgins. (5.1834) CUL-DAR34.192 Transcribed by Kees Rookmaaker, edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Kees Rookmaaker, corrections and editing by John van Wyhe 4.2011. RN2
NOTE: This document, part of the largest scientific document composed by Darwin during the voyage of the Beagle, is written mostly in ink. Marginal notes are here integrated into the text.
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Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.
Cape Virgins. May 17th.  — East side
Cliff supposed to be between 200 & 300 feet. no proof slate ended split more than the sandstone. surface tolerably level; no shingle: rather more vegetation. general substance yellow, soft, fine grained laminated sandstone: (like East coast & head of S. C. River)
interstratified with it are beds 10 to 20. & some
only few less of hard. blackish muddy clay (or indurated mud) containing very many fragments 1/4 of inch of slate rock, there were larger masses (2 fists to 1/2 head) of syenite & greenstone. —
Clearly belongs to East coast formations
no organic remains. — Mr Stokes.
The interstratified beds of hardened
mud, are generally horizontal, some times waving. & thinning out at each end at no great distance apart; it occurs in no regular order in the sandstone generally 3 or 4 beds in the cliffs. —
About 2 feet of vegetable soil. — Cliffs extend 18 miles up the coast where I imagine valley with outlyers separate Pat. from T. del Fuego. —
V. Specimen of sandstone & sand
Rocks off. C. Francisco de Paulo & C. Virgins.
The Friars outlying hills in gr. oyster bed:
Stony ridges. off C. Virgins: cause of line of coast: probable from sounding nature & depth & productions & direction:
Cliffs. from C. Virgins to Possession: latter higher undulatory. — originate or effects of currents during elevations. —
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Citation: John van Wyhe, editor. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 2 July, 2012