RECORD: Darwin, C. R. [1835]. hand-drawn and water-coloured stratigraphical long section map eastwards from coast — Copiapo — Tierra Amarilla. CUL-DAR44.19. (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. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with 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.
Three pieces of 'COLLINS 1828' and one (leftmost) of 'R M 1831 1' joined by three pieces of white wove paper pasted on the verso joints. 113x13cm. The entire section is reproduced first, followed by enlargements in four parts. Part of this was published in South America, Plate I, '(3) Sketch - section up the valley of Copiapo to the base of the main Cordillera.'
See the introduction to the Geological Diary by Gordon Chancellor.
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[geological section]
[Colour key]: Granite & syenite greenstone | Mica slate | Green feldspathic altered clay slate | Porphry | Porphyrit. breccia or subaqeous porph: lavas alternating: with sedimentary beds | Passing into each other} Gypseous form: | Super gypseous form
[above sketch:] (W) E | Tertiary plains Villa de Copiapò | (E) W |NW.) | Disturbed ESW | 1000 | First axis | Highly inclined | (SE | NW) | Second axis 2[3] | no | [Fluid] A | 4000 to 5000ft | 45º | 4000 to 5000 | Quebrada de los Hornitos 5000-6000 ft | Hacienda de Portrero Seco | less dip 36º to 40º 30 to 40 | Same vertical scale as in Cordillera same scale | (Names below) B Fourth axis | Leave out lines of stratification | 30º-40º W | Fifth axis of elevation {30º-40º 5 | Mouth of Quebrada. Jolquera | (C) | Within Q. Jolquera D 6 | (SE) | SW | (NE)
[below sketch:] Sea A | B | Tierra Amarilla A | A | B(1) | B | (C) | (D)(2) x 45º [illeg] E | Andesite | F | La Punta | Veins | G | Fault | H | H | I (3) | Las Amolanas | K | L | M | N (4) O | P | Q | R | (5) | S | The lower part of the central ridge | S
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(P 144)
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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