02668cam a22003373u 4500 9824 UtSlPG 20260610133236.0 m cr n 260607r2006||||utu|||||o|||||||||||||| d UtSlPG fr iso639-1 QE Darwin, Charles, 1809-1882 Observations Géologiques sur les Îles Volcaniques Explorées par l'Expédition du "Beagle" : Et Notes sur la Géologie de l'Australie et du Cap de Bonne-Espérance Salt Lake City, UT : Project Gutenberg, 2006 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier Release date is 2006-02-01 Produced by David Starner, Anne Dreze, Marc D'Hooghe and the PG Online Distributed Proofreaders "Observations Géologiques sur les Îles Volcaniques Explorées par l'Expédition du « Beagle »" by Charles Darwin is a scientific publication written during the mid-19th century. This work is part of a trilogy discussing geological observations made during Darwin's famous voyage on the Beagle, focusing specifically on volcanic islands, the geological features of Australia, and the Cape of Good Hope. The likely topic centers on the geological formations and phenomena observed by Darwin during his explorations of various volcanic regions, particularly in the Atlantic. At the start of the work, Darwin introduces the foundational geology of the island of San Thiago, which is part of the Cape Verde archipelago. He meticulously describes the geological layers he encounters, detailing the sedimentary and volcanic rock formations, their mineral compositions, and the implications of their structures on volcanic activity. In this initial chapter, he highlights the interplay between basaltic lava and calcareous deposits, emphasizing the significance of his observations in challenging existing geological theories, such as the "crater of elevation" concept. This opening portion sets the stage for a deeper examination of the geological principles that underpin his arguments while showcasing his keen observational skills and the influence of his earlier studies on his geological theories. (This is an automatically generated summary.) Original publication data not identified Beagle Expedition (1831-1836) Geology -- South America Volcanoes -- Southern Hemisphere Renard, Alphonse-François, 1842-1903 https://www.gutenberg.org/ebooks/9824 51445 51445