For several years be worked in this capacity at the Museum in Jermyn Street: he described the volcanic rocks of E. Somerset and the Bristol district in 1876, and wrote special memoirs on The Eruptive Rocks of Brent Tor (1878), and on The Felsitic Lavas of England and Wales (1885).
The topography is highly suggestive of a volcanic crater and, given that the region's rocks are indeed igneous and there are hot springs, this gave rise to a common misconception that Poços de Caldas would be located inside the crater of a large extinct volcano.
rock | Rock music | rock music | punk rock | alternative rock | indie rock | rock and roll | Punk rock | rock band | Rock Band | 3rd Rock from the Sun | Kid Rock | 30 Rock | Rock | pop rock | folk rock | Little Rock, Arkansas | Indie rock | Alternative rock | Rock Band 3 | classic rock | Kill Rock Stars | Rock and Roll Hall of Fame | Rock and roll | Christian rock | Chris Rock | We Will Rock You | Little Rock | Classic rock | Rock Hudson |
The range is composed of a diverse group of mostly igneous rocks dating from the Devonian to Early Triassic Periods.
The term was used as a rock type name for some of the Paleogene igneous rocks of Scotland.
Analysis of Apollo 14 samples suggests that there are five major geologic constituents present in the immediate landing area: regolith breccias, fragmental breccias, igneous lithologies, granulitic lithologies, and impact-melt lithologies.
Carrock Fell’s geology is unique in the Lake District in that it is predominantly composed of Gabbro, a rough igneous rock that also makes up the famous Black Cuillin on the Isle of Skye.
Most of the park is underlain by Triassic diabase, an igneous rock, and the many large, rounded boulders within the park are made of this material.
Merensky Reef, a layer of igneous rock in the Bushveld Igneous Complex (BIC) in the Transvaal named after Hans
Trap rock, form of igneous rock exhibiting polygonal vertical fractures