Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon.
Belknap volcano is a Holocene example of the process which built the High Cascade Platform during the Pleistocene. It is a small shield volcano with a capping cinder cone.
A number of other eruptions also occurred in the general area during roughly the same time period. About 1,300 years ago (1,330 14C years B.P.) a series of small spatter cones formed between Belknap and Blue Lake. North of these, a phreatic explosion blasted out the crater which is today occupied by Blue Lake. To the south are several cinder cones and associated lava flows, including Collier, Four-in-One, and Yapoah cones. Four-in-One Cone has been dated at about 1,900 years old (1,980 14C years B.P.) while Collier is dated at about 1,500 years old (1,600 14C years B.P.)
Notable vents 
||6,876 ft (2,096 m)
||44°17′06″N 121°50′32″W / 44.284943458°N 121.842233094°W
||4,869 ft (1,484 m)
||44°18′12″N 121°54′23″W / 44.30331°N 121.90649°W
||6,306 ft (1,922 m)
||44°16′57″N 121°49′34″W / 44.2826179°N 121.8261628°W
|South Belknap Cone
||5,863 ft (1,787 m)
||44°16′03″N 121°50′42″W / 44.26751°N 121.84507°W
||5,285 ft (1,611 m)
||44°15′12″N 121°53′09″W / 44.2534523°N 121.8858860°W
This article incorporates public domain material from websites or documents of the United States Forest Service.
External links