Breccia pipe
A breccia pipe, also referred to as a chimney, is a mass of
minerals or rock cemented together by a fine-grained matrix), often in an irregular and cylindrical shape.[1]
Characteristics
When exposed at the surface, a breccia pipe may appear as an iron-stained knob, from several feet to several hundred feet in diameter. Breccia pipes may or may not be
oxidation, and due to their porous nature, may be oxidized to depths far below the ground surface. Breccia pipes that have never reached the Earth's surface are referred to as "blind".[3]
Origin
Although the origin of breccia pipes is disputed, the most commonly accepted theory is that they formed at intersections of fractures. In these areas,
hydrothermal solutions forced their way to the surface. However, there are some breccia pipes that are a result of limestone collapse by acidic water or other soluble rock types.[2][3][4]
Occurrence
Areas that contains many examples of breccia pipes include
See also
- Hydrothermal circulation– Circulation of water driven by heat exchange
- Vein (geology) – Sheetlike body of crystallized minerals within a rock
References
- ^ "Glossary of Meteoritical Terms". New England Meteoritical Services. Archived from the original on December 25, 2001. Retrieved August 10, 2019.
- ^ a b Descriptive Model of Solution Collapse- Breccia Pipe Uranium Deposits
- ^ a b c Heylmun, Edgar B. "Breccia Pipes". Retrieved 2009-03-07.
- .
- ^ "Geology And Geochemistry of the Mammoth Breccia Pipe, Copper Creek Mining District, Southeastern Arizona". Archived from the original on 2007-06-29. Retrieved 2009-03-07.