RECORD: Darwin, C. R. [Humboldt] `Superposition'. CUL-DAR41.73 Transcribed by Kees Rookmaaker. (Darwin Online, http://darwin-online.org.uk/).

REVISION HISTORY: Transcribed by Kees Rookmaaker, edited by John van Wyhe 3.2011. RN1

NOTE: Editorial symbols used in the transcription:
[some text] 'some text' is an editorial insertion
[some text] 'some text' is the conjectured reading of an ambiguous word or passage
[some text] 'some text' is a description of a word or passage that cannot be transcribed
< > word(s) destroyed
<some text> 'some text' is a description of a destroyed word or passage
Text in small red font is a hyperlink or notes added by the editors.

Reproduced with the permission of the Syndics of Cambridge University Library and William Huxley Darwin.


73

note

(a) Humboldt states (superposition &c p. 222) that on the road from Acapulco to Mexico, porphyries & coarse grained granites dip to the NW & the latter sometimes to SE.1

Does it hence appear probable that the two prevalent systems of the Americas intersect each other in Mexico? —

(b) Note

It is stated, in Cleveland's Geology of the United States, that the primitive formations are generally inclined to the SE at a greater angle than 45°. —

1 Humboldt 1823, pp. 221-222. This item was miscatalogued by the CUL as a note on Humboldt's Personal narrative.

1 Cleaveland 1816.

These notes refer to (a) and (b) on DAR41.73 recto.


This document has been accessed 1097 times

Return to homepage

Citation: John van Wyhe, editor. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

File last updated 2 July, 2012