RECORD: Darwin, C. R. n.d. In Cordill: should basal lavas be called Volcanic or Plutonic. CUL-DAR40.12. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2021. 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.

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In Cordill: should basal lavas be called Volcanic or Plutonic

The cellular state of all the Porphyry specimens, must be well examined

At M. Video facts of Passages marked by do discuss quartz veins, there contemp - yet similar ones in Clay. Slates contemporaneous others subsequent as in dikes.

(88

In Granite great crystals arranged on sides. V. Lyell P 355 Vol III, constitution of veins, is there said granite in close contact varies in nature, Does not granite at C. Tres Montes become more siliceous in close contact? — Cordillera??? - Porphyry at Valparaiso; Epidote

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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