RECORD: Darwin, C. R. [1833].01.19-02.06. Speculations concerning Cleavage & stratification. CUL-DAR39.117. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2022. 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.
[117]
Speculations concerning Cleavage & stratification: [calculations]
The west slate, though dipping to the SSW is North of the WNW & SSE granitic range!!
At the junction E of N arm the roofing slate appeared to be upon the crystalline slate.
Foxes & mice at Navarin & Wollaston island: Humboldt applies argument used about slate ─ to Navarin island: 1/4 1/8 .25
order of dip SS of cleavage on both sides Navarin island SSW NSE 5.5
[117v]
Jan. 19th. ─ (angle of interval ∠ 45˚)
N East end of horizon
cleavage dip to SSW about 80
run WNW & ESE
fissures run WSW & ENE
dip about same ∠
21˚ ∠ 78˚ 3/4 .25 N Shore of B [illeg] opposite ─ middle of [illeg]
Chonos about 60 SSW
run WNW & WSE
fissure n by E & S by W
23˚ cleavage dips to S by W ∠50
runs W by N & E by S
1s set East entrance of Ponsonby Sound
{fissures dip NW by N ∠45
∠45˚ run NW by W .0 NE by E
fissures dip to E by S 1/2 S ∠87
∠84 1/2 125 run N by E 1/2 & S by W 1/2 W
Feb 6th 78 3/4 East shore of Ponsonby 78 ─
Cleavage dips to SSW
run WNW & ESE
fissures dip to NW by W ∠65˚
runs SW by S & NE by N.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022