RECORD: Darwin, C. R. n.d. Much saline efflorescence about Rochas 70 miles W of Luxan. CUL-DAR40.37. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2021. 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.
[37]
Much saline efflorescence about Rochas 70 miles W of Luxan
Mica slate at Barren quarters first mountain rock
NB mole of B. Ayres Mica State! dip to SE ∠ 45.
El Morro full of mica slate 500 to 700 feet high perhaps theory transverse
R Quinto bed horizontal strata of dark red agglutinated sand 192
Cliffs at river of S Luis alta del Geso (Los Gigantus) 7 leagues broad strip of table land
Transverse salina (near banks of R. Negro) all transverse where San Luis & Mendoza. – cliffs in R Tucuman at Barren quarter first pebble of Quartz going West.
82 leagues Mandora to San Luis
[37v]
Bushy or salina 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 Transverse of Mendoza there are others of Rioja Cordova St Jago Tucuman [illeg] 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 [illeg] Clay slate. also at [illeg] Cordova (from Henslow?)
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 16 October, 2023