RECORD: Darwin, C. R. [September 1833]. Much saline efflorescence about Rockas 70 miles W of Luxan. CUL-DAR40.37. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 1.2025. RN3
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. Cream-coloured wove paper, no watermark seen.
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Much saline efflorescence about Rockas 70 miles W of Luxan
Mica slate at Barranquitos first mountain rock
NB Mole of B. Ayres mica slate! dip to SE ∠ 45.
El Morro full of mica slate 500 to 700 feet high perhaps [thinly] Traversia
R Quarto bed horizontal strata of dark red agglutinated sand.— P 921
Cliffs at river of S Lucia Alto del Yeso (Los Gigantes) 7 leagues broard strip of table land.— 304[-]222[=]82
Traversia salina (near banks of R. Negro) All Traversea between San Luis & Mendoza.— cliffs in R Tunuyan
At Barranqnitos first pebble of quartz.— going west.—
82 leagues. Mendoza to San Lucia
1 Miers 1826, vol. 1, p. 92.
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Bushy or saline countries same: South of Cordova they exist
Mendoza 2600 feet.—
Uspallata plain below Paramillo & Andes. Elevation?—
I should think Luxan village south of Mendoza on river would show good section of 5 plains.—
Besides Traversia of Mendoza there are others of Rioja, Cordova St Jago Tucuman same characters San Luis? S Juan? P. 234.
The earth contains sulph. of soda St. Juan.—
P 250 — East of S Luis to Tucuman mica slate chain: Tucuman to Potosi clay slate.— where if joins Cordova (from Helms?)1.—
1 Miers 1826, vol. 1, pp. 234, 250. Miers referred to (without citation) Helms 1807.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 6 February, 2025