A Geological Chart of the World c.1893

Geological Chart & Cloud Classification first published circa 1893. Featuring a cross section of of the earth where geologic time is illustrated in eons (archaeon), eras (Paleozoic, Mesozoic, Cenozoic), periods (Cambrian, Triassic, Quaternary, etc.), and epochs (Eocene, Miocene, Pliocene). Types of beds and groups that make up these periods of geologic time are included as are the types of animal fossils that can be found. Rock and geologic elements are clearly labelled (limestone, sandstone, chalk, salt, etc.) Also illustrated - geysers and volcanoes, formations of birds and a key below to classify the four primary cloud groups.