RECORD: Darwin, C. R. 1846.06-1847.07. Maer June 1846 Ashley Heath. CUL-DAR5.B31-B32. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 11.2021. 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.


[B31]

Maer June 1846 {Not a tenth of mile lower surface or upper of this block was decayed

Ashley Heath by Murchison Map 803 ft high rounded form of same nature on one side near top boulder of imperfect syenite – diamond-shaped slab 2 ft deep 40 1/2 feet in one axis & 4 in other – angular – rounded – some of the crests quite sharp – generally somewhat rounded buried two feet in earth beneath & round it -

yellow slightly agglutinated apparently earthy, really nearly pure, slightly ferruginous sand with the perfectly rounded pebbles, just like in the conglomerate beds in new Red Sandstone formation of surrounding country – I compared & could find no difference in the latter & former excepting that the former, or diluvium many of the pebbles broken but in new Red Sandstone the pebble are fissured & that the men quarrying the conglomerate break great numbers – The stuff for about 2 inches right under boulder with fewer pebbles & less coarsely sandy – stained black by roots. Only curious circumstance they move or few shells from same origin as boulder are not present.

 

[B32]

Boulder of greenish altered slate in Jealous field – about 4 1/2 long by 3 under & 2 deep. - lay about 18 inches above irregular surface of new Red Sandstone rested on fragments chiefly angular but some rounded of new Red Sandstone, some of quartz from this formation, one of granite as big as concrete wall & one smaller. – One well rounded boulder of Red Sandstone, had been broken in two & was deeply scored – Sand stained probably once pure. I hardly can fancy a coast with or many angular was without high up on beach. – it was at foot of bank which might have been a cliff – former of land nearly a slope – boulder on lower surface smooth but blistered irregular surface, not the least decomposed.

 

[B32v]

July 1842 Shrewsbury

Through Grand wood turning down lanes on left hand gravel pit – unknown shells – fragments (entangled in coast ice?) many boulders of new Red Sandstone & irregular stratification.

I found a granite pebble in gravel Pit – above turnpike on Coal-pit road where I found bits of shells, mentioned in Murchison's work. Chalk flints at Madely.

 


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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