Powell Butte
Encyclopedia
Powell Butte is an extinct volcanic cinder cone
butte
in Portland
, Oregon
, United States
. It is one of four such cones (the others being Rocky Butte
, Kelly Butte and Mount Tabor) inside the city that are home to a city park and is part of the Boring Lava Field
, an area of extinct volcanoes. Powell Butte hosts the Powell Butte Nature Park.
Volcanic cone
Volcanic cones are among the simplest volcanic formations. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption...
butte
Butte
A butte is a conspicuous isolated hill with steep, often vertical sides and a small, relatively flat top; it is smaller than mesas, plateaus, and table landform tables. In some regions, such as the north central and northwestern United States, the word is used for any hill...
in Portland
Portland, Oregon
Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...
, Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. It is one of four such cones (the others being Rocky Butte
Rocky Butte
Rocky Butte is an extinct volcanic cinder cone butte in Portland, Oregon, United States. It is one of four, along with Kelly Butte, Powell Butte, and Mount Tabor, inside the city that are each home to a city park, Rocky Butte playing host to Joseph Wood Hill Park. It is also part of the Boring...
, Kelly Butte and Mount Tabor) inside the city that are home to a city park and is part of the Boring Lava Field
Boring Lava Field
The Boring Lava Field is an extinct Plio-Pleistocene volcanic field zone with at least 32 cinder cones and small shield volcanoes lying within a radius of 13 miles of Kelly Butte, which is approximately 4 miles east of downtown Portland, Oregon, in the United States...
, an area of extinct volcanoes. Powell Butte hosts the Powell Butte Nature Park.
External links
- Aerial photo of Powell Butte from USGS
