26 Facts About Belknap Crater

Belknap Crater is a shield volcano in the Cascade Range in the U S state of Oregon.

Belknap Crater is not forested and most of its lava flows are not vegetated, though there is some wildlife in the area around the volcano, as well as a number of tree molds formed by its eruptive activity.

Precise determination for Belknap Crater's age has not been made, as its early history remains obscure.

Belknap Crater has likely been built up by eruptive activity over a long period of time.

Belknap Crater has had four Holocene eruptive periods confirmed by geological evidence.

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Belknap Crater formed on the lower slopes of Mount Washington, a highly eroded volcano, and is one of the larger mafic volcanoes in the Sisters Reach.

Belknap Crater itself is not forested and its lava flows are generally not vegetated, though there were trees growing on its lava flow deposits in the 1960s according to Taylor .

Along the trail to Little Belknap Crater, there is a tree island with lodgepole pine, mountain hemlock, and true fir.

Along the Oregon Skyline Trail, which passes west of Belknap Crater, there are black-tailed and mule deer as well as lakes stocked with Eastern brook trout.

Belknap Crater is the youngest shield volcano in the Cascade arc by far, with rugged, barren lava fields that contrast with the forested fields of older Cascade shields.

Belknap Crater was the last volcano to erupt in the Three Sisters area.

Belknap Crater is one of the larger mafic volcanoes in the Sisters Reach, more than 30 of which run continuously along the segment.

Belknap Crater is one of three major lava fields in its area with Sand Mountain and Yapoah–Four-in-One–Collier.

The basalt and basaltic andesite lava flows from Belknap Crater include small plagioclase and olivine phenocrysts, which run for 0.

Belknap Crater is well-preserved and serves as a good example of Holocene-era activity in the High Cascades.

Eruptions at Little Belknap Crater were "quiet", but voluminous, creating the separate shield, which is topped with cinders and lava blocks with collapsed lava tubes radiating outward.

Early lava flows near South Belknap Crater were covered by a later lava flow, which was produced by a vent located about 300 feet northwestward.

The Little Belknap Crater volcano erupted lava flows that formed steptoes out of two hills by surrounding them with black, basalt.

Besides the volcanic vents related to Belknap Crater, there are two volcanoes south of Belknap which were recently active: Four-in-One Cone and Collier Cone.

Deposits from Belknap Crater buried older lava flows from the Sand Mountain Volcanic Field as well as a series of four cinder cones located about 3.

Eruptions at Belknap Crater built up the main shield volcano over repeated activity from vents surrounding a composite summit cone.

Belknap Crater has been the focal point for Holocene volcanism producing basaltic and basaltic andesitic lava in its vicinity, which was complex and sustained over a long period of time.

Precise determination for Belknap Crater's age has not been made, as its early history remains obscure, though it is likely that Belknap Crater has been built up by eruptive activity over a long period of time.

Early lava flows at Belknap Crater were erupted from actively erupting volcanic vents before Little Belknap Crater formed, as demonstrated by stratigraphy.

The recent eruptive activity at Belknap Crater means that it is one of the youngest mafic volcanoes in the Oregon Cascades.

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The Belknap family came to the state of Oregon in 1847 with the Orem family, followed by G Belknap and J Belknap in 1848.