RECORD: Darwin, C. R. [1832]. hand-drawn and water-coloured stratigraphical section map of Punta Alta — Bahia Blanca. CUL-DAR44.22. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 2024. With thanks to Gordon Chancellor. RN2
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR44 contains maps of South America, plans, diagrams and geological sections etc. drawn by Darwin.
Coloured section of Punta Alta. Cream-coloured wove paper, 21x10cm. This was published as fig. 15 in South America, p. 82: "Section of beds with recent shells and extinct mammifers, at Punta Alta in Bahia Blanca." There is an annotated proof of the woodcut in CUL-DAR39.208.
See the introduction to the Geological Diary by Gordon Chancellor.
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[above sketch:] Section of Punta Alta, Baia Blanca (being about a mile long & only 20 feet high: this is out of all proportion; especially the sides, which taper more gradually
Brown… superficial detritus:– | Blue. Cemented gravel, containing many shells & bones; lower part with layers of marl:– | Red. Compact earthy clay:–
Detritus with land & sea shells | Dotted the alluvium
[in sketch:] Impure tosca replacing gravel | (C) Gravel| C Gravel |B Gravel | A Gravel
[below sketch:] NNW | Shows the form | Low water | N. B make this | NNE
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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 8 February, 2026