Lava Cast Forest

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Lava Cast Forest
Lava moulds of former trees.jpg
Lava molds of ancient tree trunks
USA Oregon location map.svg
Red pog.svg
Location in Oregon
Location Deschutes County, Oregon, United States
Nearest city Bend
Coordinates Coordinates: 43°49′2″N121°17′19″W / 43.81722°N 121.28861°W / 43.81722; -121.28861
EstablishedApril 1942

Lava Cast Forest is a visitor destination within the Newberry National Volcanic Monument near Bend, in the U.S. state of Oregon. It is a geologic feature containing a 6,000 year old lava flow that created lava molds of ancient trees. [1] It's located about 25 total miles south of Bend and is accessible via a 9-mile (14 km) gravel road from U.S. Highway 97. [2] The site includes paid parking and a paved interpretive loop trail, with some sections too narrow or steep for wheelchairs. [3]

Contents

Geology

The Lava Cast Forest area includes cinder cones and various lava flows, with the youngest flow at 6,000 years old. [4] It created molds around preexisting tree trunks when the lava flowed around them. [5] The molds were created when hot lava came into contact with trees, chilling the lava and created a protective covering, or mold. [1] The trees then burnt completely out leaving a hollow interior. [1] The molds can be vertical or horizontal, with some horizontal casts being up to 50 to 60 feet long. [1] In some of the molds, the imprint of tree bark can be seen. [1] Even ancient charcoal are still in some of the molds, and rings of annual tree growth can be seen in some. [1] Originally, lumber company employees thought the molds were lava gas blowouts, until Walter J. Perry discovered the imprints of lava bark. [1] Lava "drippings" found in freshly formed molds were created when lava dripped into the interior cavity. [1]

History

The area surrounding Lava Cast Forest was used heavily for lumber in the early 1900s. [1] After Perry's discovery, the area received attention from all over the west part of the United States in 1928. [1] [4] At one point, vandals used dynamite to destroy some of the best casts as well as removing some for personal keeping. [1] In 1942, the United States Forest Service designated 5,120 acres as part of the Lava Cast Forest Geological Area and were promoted as a tourist attraction. [4]

In 1963, scientists from NASA became interested in the lava fields because they had very little erosion and they suspected it might be what they would find on the surface of the Moon. [4] From 1964 to 1966, at least 46 astronauts trained for lunar missions in the area. [4] James B. Irwin delivered a rock from one of Oregon's lava flows to the lunar surface to commemorate NASA's experiences in central Oregon. [4]

Related Research Articles

Deschutes County, Oregon U.S. county in Oregon

Deschutes County is one of the 36 counties in the U.S. state of Oregon. As of the 2010 census, the population was 157,733. The county seat is Bend. The county was created in 1916 out of part of Crook County and was named for the Deschutes River, which itself was named by French-Canadian trappers of the early 19th century. It is the political and economic hub of Central Oregon. Deschutes comprises the Bend, OR Metropolitan Statistical Area. Deschutes is Oregon’s fastest-growing county.

Newberry National Volcanic Monument

Newberry National Volcanic Monument was designated on November 5, 1990, to protect the area around the Newberry Volcano in the U.S. state of Oregon. The monument was created within the boundaries of the Deschutes National Forest, which is managed by the U.S. Forest Service, and includes 54,822 acres of lakes, lava flows, and geologic features in central Oregon.

Deschutes River (Oregon)

The Deschutes River in central Oregon is a major tributary of the Columbia River. The river provides much of the drainage on the eastern side of the Cascade Range in Oregon, gathering many of the tributaries that descend from the drier, eastern flank of the mountains. The Deschutes provided an important route to and from the Columbia for Native Americans for thousands of years, and then in the 19th century for pioneers on the Oregon Trail. The river flows mostly through rugged and arid country, and its valley provides a cultural heart for central Oregon. Today the river supplies water for irrigation and is popular in the summer for whitewater rafting and fishing.

Newberry Volcano Stratovolcano in Oregon, United States

Newberry Volcano is a large active shield volcano located about 20 miles (32 km) south of Bend, Oregon, United States, 35 miles (56 km) east of the major crest of the Cascade Range, within the Newberry National Volcanic Monument. Its highest point is Paulina Peak. The largest volcano in the Cascade Volcanic Arc, Newberry has an area of 1,200 square miles (3,100 km2) when its lava flows are taken into account. From north to south, the volcano has a length of 75 miles (121 km), with a width of 27 miles (43 km) and a total volume of approximately 120 cubic miles (500 km3). It was named for the geologist and surgeon John Strong Newberry, who explored central Oregon for the Pacific Railroad Surveys in 1855. The surrounding area has been inhabited by Native American populations for more than 10,000 years.

Belknap Crater Shield volcano in the U.S. state of Oregon

Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon. Located in Linn County, it is associated with lava fields and numerous subfeatures including the Little Belknap and South Belknap volcanic cones. It lies north of McKenzie Pass and forms part of the Mount Washington Wilderness. Belknap 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.

Central Oregon Region in Oregon, United States

Central Oregon is a geographic region in the U.S. state of Oregon and is traditionally considered to be made up of Deschutes, Jefferson, and Crook counties. Other definitions include larger areas, often encompassing areas to the north towards the Columbia River, eastward towards Burns, or south towards Klamath Falls. These three counties have a combined population of 200,431 as of the 2010 census, with Deschutes the largest of the three counties, having approximately four times the population of the other two counties combined. As of 2015, the most populous city in the region is Bend, with an estimated 87,014 residents. As defined by the three county definition, Central Oregon covers 7,833 square miles (20,290 km2) of land. Central Oregon has had 3 record tourism years beginning in 2012. Over 2.2 million people visited Central Oregon in 2012 and again in 2013.

Lava Butte

Lava Butte is a cinder cone in central Oregon, United States, just west of U.S. Route 97 between the towns of Bend, Oregon, and Sunriver, Oregon. It is part of a system of small cinder cones on the northwest flank of Newberry Volcano, a massive shield volcano which rises to the southeast. The cinder cone is capped by a crater which extends about 60 feet (20 m) deep beneath its south rim, and 160 feet (50 m) deep from the 5,020-foot (1,530 m) summit on its north side. Lava Butte is part of the Newberry National Volcanic Monument.

Deschutes National Forest

The Deschutes National Forest is a United States National Forest located in parts of Deschutes, Klamath, Lake, and Jefferson counties in central Oregon. It comprises 1.8 million acres (7,300 km2) along the east side of the Cascade Range. In 1908, the Deschutes National Forest was established from parts of the Blue Mountains, Cascade, and Fremont National Forests. In 1911, parts of the Deschutes National Forest were split off to form the Ochoco and Paulina National Forests, and parts of the Cascade and Oregon National Forests were added to the Deschutes. In 1915, the lands of the Paulina National Forest were rejoined to the Deschutes National Forest. A 1993 Forest Service study estimated that the extent of old growth in the forest was 348,100 acres (140,900 ha). Within the boundaries of the Deschutes National Forest is the Newberry National Volcanic Monument, containing cinder cones, lava flows, and lava tubes. The Deschutes National Forest as a whole contains in excess of 250 known caves. The forest also contains five wilderness areas, six National Wild and Scenic Rivers, the Oregon Cascade Recreation Area, and the Metolius Conservation Area. Forest headquarters are located in Bend, Oregon. There are local ranger district offices in Bend, Crescent, and Sisters.

Devils Garden volcanic field

Devils Garden Volcanic Field is a volcanic field located south east of Newberry Caldera in Oregon. The lava field consists of several flows of pahoehoe lava that erupted from fissure vents in the northeast part of the Devils Garden. The main vent on the north end of the fissure created a lava tube system. Several small vents to the south produced the Blowouts, several small spatter cones, and flows. Several older hills and higher areas were completely surrounded by the flows to form kipukas. The distal ends of the flows show excellent examples of inflated lava.

Lava cave Cave formed in volcanic rock, especially one formed via volcanic processes

A lava cave is any cave formed in volcanic rock, though it typically means caves formed by volcanic processes, which are more properly termed volcanic caves. Sea caves, and other sorts of erosional and crevice caves, may be formed in volcanic rocks, but through non-volcanic processes and usually long after the volcanic rock was emplaced.

Lava River Cave

The Lava River Cave near Bend, Oregon, is part of the Newberry National Volcanic Monument, which is managed by the United States Forest Service. At 5,211 feet (1,588 m) in length, the northwest section of the cave is the longest continuous lava tube in Oregon. While the cave's discovery in 1889 was officially credited to a pioneer hunter, the presence of obsidian flakes near the cave has led archaeologists to conclude that Native Americans knew about the cave long before settlers arrived in central Oregon.

Little Lava Lake

Little Lava Lake lies in the Cascade Range about 26 miles (42 km) west-southwest of Bend in the U.S. state of Oregon. A close neighbor of Lava Lake, from which it is separated by solidified lava, Little Lava Lake is at an elevation of 4,744 feet (1,446 m) in the Deschutes National Forest. Generally considered the source of the Deschutes River, the lake covers 138 acres (56 ha) to an average depth of 8 feet (2.4 m).

Oregon Badlands Wilderness

The Oregon Badlands Wilderness is a 29,301-acre (11,858 ha) wilderness area located east of Bend in Deschutes and Crook counties in the U.S. state of Oregon. The wilderness is managed by the Bureau of Land Management as part of the National Landscape Conservation System and was created by the Omnibus Public Land Management Act of 2009, which was signed into law by President Barack Obama on 30 March 2009.

Horse Lava Tube System

The Horse Lava Tube System is a series of lava tubes within Deschutes County, Oregon, of the United States. The system starts within the Deschutes National Forest on the northern flank of Newberry Volcano and heads north into and near the city of Bend. The system continues north again to Redmond at the Redmond Caves and into the Redmond Canyon, where the last known segment is known to exist; however, the basalt flow that created the system goes beyond to Crooked River Ranch and terminates just short of the Crooked River Gorge. The lava flow that created the Horse system is also referred to as the Horse Cave lobe and it filled the ancient channel of the Deschutes River which at that time flowed around the east side of Pilot Butte. The Horse Cave lobe is a part of the basalt of Lava Top Butte which also consists of the Arnold Lava Tube System, the Badlands rootless shield, and the Lava Top butte basalt. All have a geologic age around 80,000 years old.

Paulina Lake Guard Station United States historic place

The Paulina Lake Guard Station is a Forest Service building located in the Newberry National Volcanic Monument in Central Oregon. The guard station was built by the Civilian Conservation Corps to house the seasonal assistant ranger responsible for patrolling the forest around Paulina Lake. Because of its rustic architecture, the guard station was listed on the National Register of Historic Places in 1986.

Paulina Mountains

The Paulina Mountains are a mountain range in Deschutes County, Oregon. There are 97 named mountains in the Paulina Mountains, the tallest and most famous one being Paulina Peak, which sits at 7,969 feet in elevation. "Paulina Peak serves as the highest point of the Newberry Volcano, a large active stratovolcano that sits just 35 miles east of the crest of the Cascade Range. These summits are actually the remnants of an old crater called the Newberry Crater.

Benham Falls

Benham Falls are rapids of the Deschutes River located between Sunriver and Bend, Oregon, United States. With a pitch of 22.5°, they are rated Class 5 for watercraft, and are the largest falls on the upper Deschutes.

Skeleton Cave (Oregon)

Skeleton Cave is a lava tube within Deschutes County, Oregon, of the United States. The cave is within Deschutes National Forest and is located on the northern flank of Newberry Volcano near the city of Bend. The cave is between 75,000 and 400,000 years old.

Boyd Cave is a lava tube within Deschutes County, Oregon, of the United States. The cave is within Deschutes National Forest and is located on the northern flank of Newberry Volcano near the city of Bend.

China Hat (Oregon)

China Hat is a volcanic butte on the southeastern flank of Newberry Volcano in Deschutes County, Oregon, United States. It is a rhyolitic dome dating from the age of the Middle Pleistocene. Both China Hat and nearby East Butte are covered by Mazama Ash and Newberry Ash.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Visitor Information Service - Deschutes National Forest" . Retrieved 2018-01-19.
  2. "Newberry National Volcanic Monument - Deschutes NF - Lava Cast Forest Day Use Interpretive Site". www.fs.usda.gov. Retrieved 2016-11-28.
  3. "Lava Cast Forest Trail". FS.USDA.GOV. Retrieved 2018-01-19.
  4. 1 2 3 4 5 6 "Lava Cast Forest". OregonHistoryProject.org. Retrieved 2018-01-19.
  5. "Lava Cast Forest Day Use Interpretive Site". FS.USDA.GOV. Retrieved 2018-01-19.