Rocks and Their Origins by Grenville A. J. Cole

Do you know the difference between sedimentary, igneous and metamorphic rocks? Are you interested in their geologic origin, chemical composition or how each type affects the landscape?...

Loyal Books

15 episodesEN-US

Arts Literature

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Show overview

Rocks and Their Origins by Grenville A. J. Cole launched in 2025 and has put out 15 episodes in the time since. That works out to roughly 4 hours of audio in total. Releases follow a near-daily cadence.

Episodes typically run ten to twenty minutes — most land between 12 min and 15 min — and the run-time is fairly consistent across the catalogue. None of the episodes are flagged explicit by the publisher. It is catalogued as a EN-US-language Arts show.

There hasn’t been a new episode in the last ninety days; the most recent episode landed 5 months ago. The busiest year was 2025, with 13 episodes published. Published by Loyal Books.

Episodes

Running

2025–2026 · 1y

Median length

13 min

Cadence

Near-daily

From the publisher

Do you know the difference between sedimentary, igneous and metamorphic rocks? Are you interested in their geologic origin, chemical composition or how each type affects the landscape? Do you know the differences between limestone, granite and marble as building materials? You will find these and lots of other interesting facts about rocks in this second edition of "Rocks and Their Origins" published in 1922. The author, Grenville A. J. Cole, was an English geologist, Professor of Geology in the Royal College of Science for Ireland and an avid cyclist.