RECORD: Darwin, C. R. n.d. Geological specimens numbered 988-997, descriptions. CUL-DAR39.116. 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.


[116]

988 Greenstone: sonorous angular cleavage in vein

989 do with abundance of pyrites decomposing red externally

990 Greenstone Feldspathic rock with crystals of Hornblende & Feldspar

991 2 .3. conchoria angular basalt (easily fusible) with yellow — large but marl: columnar

993 4 994 5 (Syenite?) occur in low hill intermedial below the foregoing all on the West Coast of Handy Peninsula (Massive angular cleavage)

996 (same as 975 only more like slate in structure & character

(975 Feldspathic rock Handy Peninsula)

[116v]

997-1000

an imperfectly crystalline greenstone — from concretions pure — being more perfectly crystallized: when weathered it resembles most singularly a brecia or conglomerate. Carb of Lime occurs the interstices — This rock occurs in an irregular mass in W side of [illeg] compact slate o in a cone of ch WNW ESE with the Trap dykes described on the East side—

Slate occurs below Beagle Channel o [illeg] Sound

Capt. FitzRoy


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

File last updated 25 September, 2022