The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 19.1.[1833]. Varieties of Trappean rocks. CUL-DAR39.120. 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. RN4

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. Watermarked 'RYE MILL 1830'.

[120]

19th

~~1029:~~ 1030: 31: 32

Varieties of Trappean rocks occurring in NW end of Wollaston island (or 1s island)

1033 & 1034 do do containing very numerous veins & nodulus of opake quartz:

1035 ─ Conglomerate. (rather earthy variety

1036 red hard Scoria (abundant)

1037 Vesicular looking lava

1038 Amygdaloid with Lime: all these occur in a great bed of breccia alternating with the above Trappean rocks.

At 2d anchorage or central island of Wollaston island─

~~The rock is~~

1039: 1040: ─ 41: ─42.

Varieties 1039 most strongly showing the Breccia nature & 1042 when the rock is essentially crystalline &

[120v]

Feldspathic. ─ The intermediate numbers show intermediate status:

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