RECORD: Darwin, C. R. Geological diary: (annotated maps and diagrams relating to Berkeley Sound). [nd] CUL-DAR33.165 Transcribed by Kees Rookmaaker, edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed from the microfilm by Kees Rookmaaker, corrections against the manuscript by John van Wyhe 7.2010, further corrections by Gordon Chancellor and van Wyhe 5.2011. 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.
Editorial symbols used in the transcription:
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Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.
Slate & Sandstone
extensive low country intersected by arms from St. ??
45° 30° 40°
10° 45 40°
Great valley of fragments
Hill 962 ft
Valley of fragments
N.B. Generally. where dips are opposite small lateral dip might also be moved in the cross valleys: but I have only put them down where best seen. —
Main range 1400 ft?
Further in this direction. hills turn up in NW by W lines & quartz dips to SW by S. 40°
pencil and ink sketch, with blue watercolour.
[Drawn on thin tracing paper that is backed with card. These are separate slips although they were microfilmed together. The sketch is in black ink. The versos of the cards are blank.]
NB: This not an exact representation of nature, only an illustration.
[Drawn on thin tracing paper that is backed with card.]
A 960 ft
C 700 ft
Fig: 7. [sketch in black ink on thick cream-coloured paper, verso is blank, no watermarks]
Section of the great central range
useless] both instances in pencil.
My observations on the geology of the Falkland Islands were
made during two visits to the Eastern Isle
in the Beagle, in the months
of March 1833 & 1834. At the latter of these periods I crossed from Berkle Berkeley's Sound, to Choiseul bay & returned by a longer circuit. From
a series of specimens which, Mr Kent, when in the Adventure, had
the kindness to collect for me at the Western island. I feel assured that
the structure & geology of the whole group is of a very uniform nature.
The Falkland Islands cover a space of 130 miles of Longitude by 60 of Latitude;
which may be compared to the dimensions of the Isd of — Sardinia. The land
is much intersected by numerous winding arms from the sea: with the exception
of a few naked ridges of naked grey rock, which never attain any great
elevation, the whole surface is covered by a peaty soil bearing a brown withered
[in margin] Mr Austen in a paper read to Geolog. Soc. says that no shells in clay-slate owing change superinduced by cleavage undermining sandstone full of shells S. Devon1
now first describe the geology of the Eastern
Island & particularly of the part in the neighbourhood of Berkeley's
Sound. A little way inland. on the South side of this deep bay, is situated
the central chain or axis of the Island; — it runs about E & W, has
1 Austen 1842.
[continued in CUL-DAR33.166-216]
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Citation: John van Wyhe, editor. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
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