Abstract
A breccia pipe is a cylindrical- or irregular-shaped mass of brecciated rock. A breccia consists of broken, angular fragments of rock cemented together by a fine-grained matrix. Hydrothermal breccia pipes form when hydrothermal solutions force their way towards the surface through zones of weakness or fracture zones and naturally break up the rocks in the process, i.e., hydrofracturing; breccia pipes can also form by collapse. Hydrothermal breccia pipes can contain ore deposits and, as will be discussed later, are associated with some large oil and gas accumulations in southeastern Utah.
Highlights
A breccia pipe is a cylindrical- or irregular-shaped mass of brecciated rock
Hydrothermal breccia pipes form when hydrothermal solutions force their way towards the surface through zones of weakness or fracture zones and naturally break up the rocks in the process, i.e., hydrofracturing; breccia pipes can form by collapse
All Deseret Limestone depositional environments described from outcrops above are observed in Leadville cores from Lisbon field (Chidsey, 2004; Chidsey and others, 2004)
Summary
I have had the pleasure of working with many different geologists from all around the world. As I have traveled around Utah for work and pleasure, many times I have observed vehicles parked alongside the road with many people climbing around an outcrop or walking up a trail in a canyon Whether these people are from Utah or from another state or country, they all are quick to mention to me how wonderful our geology is here in Utah. We thank the many authors for their geosite contributions, Utah Geological Association members who make annual UGA publications possible, and the American Association of Petroleum Geologists—Rocky Mountain Section Foundation for a generous they consider unique and want to share with the rest of us. But not least, Thank you to the American Association of Association website, www.utahgeology.org, and Creative Commons Petroleum Geologists, Rocky Mountain Section Foundation for https://creativecommons.org/licenses/by/4.0/ for details
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