Global Volcanism Program | Diamond Craters
Diamond Craters volcanic field consists of a 70 km2 area of basaltic lava flows along with numerous cinder cones and maars located between the SE Oregon town of Burns and …
Crater of Diamonds History Timeline | Arkansas State Parks
2/26/1969. Howard Millar sells Millar's Crater of Diamonds to General Earth Minerals, out of Dallas, TX, for $350,000. 12/10/1971. The Arkansas State Parks, Recreation, and Travel Commission votes to buy the Crater of Diamonds property from General Earth Minerals to create a state park. 3/13/1972.
The Oregon Encyclopedia
Diamond Craters is a geologically youthful lava field 52 road miles south-southeast of Burns in southeastern Oregon. The lava field, which encompasses 27 square miles, …
Diamond Craters
Diamond Craters Outstanding Natural Area is a unique volcanic field packed with with craters, cinder cones, and lava flows. To find the Diamond Craters, travel south two miles past Buena Vista (17 miles north of Frenchglen) on Hwy 205. Turn left on Diamond Lane. This is a paved road that will lead to Diamond, Diamond Craters, and the Round Barn.
Diamond Craters | Volcano World | Oregon State University
Diamond Craters is a monogenetic volcanic field in southeast Oregon. The volcanoes are all Quaternary in age. Lava flows and tephra from the volcanoes cover an area of about 23 square miles (60 square km). This photo shows Keyhole Crater. Special thanks to Rosemary Kenney. Diamond Craters includes numerous features associated …
Diamond Craters
Diamond Craters By David Sherrod Diamond Craters is a geologically youthful lava field 52 road miles south-southeast of Burns in southeastern Oregon. The lava field, which encompasses 27 square miles, comprises chiefly pahoehoe (PAH-h ey-h ey), the smooth, ropy-topped lava best known from Hawaiian flows (the
Malheur: Diamond Craters
Malheur: Diamond Craters. D iamond Craters is a complex of multiple volcanic vents, craters, cones, and other lava events within a large caldera. These began erupting 17,000 to 15,000 years ago, one of the youngest eruptions in southeastern Oregon. Periods of quiet were punctuated by phases of explosive and dramatic blowouts.
Diamond Craters, Oregon
Diamond Craters. Head out on this 47.6-km out-and-back trail near Diamond, Oregon. Generally considered a moderately challenging route. This is a popular trail for birding, mountain biking, and scenic driving, but you can still enjoy some solitude during quieter times of day. The best times to visit this trail are April through October.
Global Volcanism Program | Diamond Craters
Diamond Craters volcanic field consists of a 70 km2 area of basaltic lava flows along with numerous cinder cones and maars located between the SE Oregon town of Burns and Steens Mountain. A basaltic pahoehoe lava field is overlain by deposits from phreatomagmatic and Strombolian eruptions that formed a late-stage central vent …
Diamond Craters Outstanding Natural Area
Summary. The lava flows and associated tephra, 1–2 km 3 (about 0.25 to 0.5 mi 3) in total, were erupted sometime between about 7,790 and 7,320 years ago. The Diamond …
Crater | Encyclopedia
crater 1. General term for a circular, funnel-shaped depression, up to 1km in diameter, produced by volcanic processes by which gases, tephra, and lava are or have been ejected. Several types are recognized: a crater at the summit of a volcanic cone marks the site of magma degassing and ejection of material; a maar, often occupied by a lake, …
Crater of Diamonds State Park
Location: Pike County. Area: 911 acres. Located on State Highway 301 in Pike County, the Crater of Diamonds State Park contains the world's only diamond mine …
Best Time of Year to Visit Crater of Diamonds State Park
A visit to Crater of Diamonds State Park promises a blend of adventure, education, and the thrill of potential discovery: Diamond Searching: Equipped with tools, you can sift, dig, and search for diamonds in the 37-acre field. Educational Programs: The park offers regular workshops and demonstrations on gem hunting techniques.
Meteors, Meteorites and Impact Craters | The Canadian Encyclopedia
Impact Craters. Huge objects are not slowed much by the atmosphere and their violent collisions with Earth have blasted out "impact" or "meteorite" craters throughout Earth's 4.6 billion year history. These objects would have been totally vapourized in the process, leaving only the crater scars formed by shock waves to record the events.
Diamond
Diamond-bearing rock is brought close to the surface through deep-origin volcanic eruptions. The magma for such a volcano must originate at a depth where diamonds can be formed, 150 km (90 miles) deep or more (three …
Baily's beads
Baily's beads. The Baily's beads, diamond ring or more rarely double diamond ring effects, [1] are features of total and annular solar eclipses. Although caused by the same phenomenon, they are distinct events during these types of solar eclipses. As the Moon covers the Sun during a solar eclipse, the rugged topography of the lunar limb allows ...
Impact Craters on Earth
Earth's impact craters have been destroyed. What is left is a small preservation sample. The terrestrial record, however, is invaluable in the understanding of impact processes for it is theonly sourceof ground-truthdata onthe three-dimensional structural and lithological character of natural impact craters.
Diamond Craters, Oregon
Diamond Craters. Head out on this 29.6-mile out-and-back trail near Diamond, Oregon. Generally considered a moderately challenging route. This is a popular trail for birding, mountain biking, and scenic driving, but …
Diamond Craters | Volcano World | Oregon State …
Diamond Craters is a monogenetic volcanic field in southeast Oregon. The volcanoes are all Quaternary in age. Lava flows and tephra from the volcanoes cover an …
Impact crater
Identifying impact craters. One of the Kaali craters, in Estonia. The distinctive mark of an impact crater is the presence of rock which has undergone shock-metamorphic effects, shattered or melted rocks, and crystal deformations. [6] Examples: A layer of shattered rock under the floor of the crater.
Craters of the Moon National Monument and Preserve
The Craters of the Moon Lava Field spreads across 618 square miles (1,601 km²) and is the largest mostly Holocene-aged basaltic lava field in the lower 48 U.S. states. The Monument and Preserve contain more than 25 volcanic cones, including outstanding examples of spatter cones. Sixty distinct lava flows form the Craters of the Moon Lava Field ranging …
Diamond Craters Volcanic Field | U.S. Geological Survey
Summary. The lava flows and associated tephra, 1–2 km 3 (about 0.25 to 0.5 mi 3) in total, were erupted sometime between about 7,790 and 7,320 years ago. The Diamond Craters lava field is unique among young basalt fields in Oregon because of its eruptive progression. An early eruptive phase was typical enough, beginning with lava flows fed ...
Diamond, Oregon
Diamond, Oregon. / 43.01222°N 118.66611°W / 43.01222; -118.66611. Diamond is an unincorporated community in Harney County, Oregon, United States. Diamond is west of Oregon Route 205 and south of Malheur Lake, 52 miles (84 km) south-southeast of Burns by highway. [2] Its post office is assigned ZIP code 97722.
Crater
A crater is a bowl-shaped depression, or hollowed-out area, produced by the impact of a meteorite, volcanic activity, or an explosion. Impact Craters. Craters produced by the collision of a meteorite with Earth (or another planet or moon) are called impact craters. The high-speed impact of a large meteorite compresses, or forces downward, a ...
Impact crater
50,000-year-old Meteor Crater east of Flagstaff, Arizona, U.S. on Earth. An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, [2] impact craters typically have raised rims ...
Age and duration of volcanic activity at Diamond Craters, …
Diamond Craters is such a lava field. It covers about 70 km 2 in Harney County, southeastern Oregon (Fig. 1) (Russell, 1903, Peterson and Groh, 1964, Russell and Nicholls, 1987).Herein we report radiocarbon ages that bracket the age of eruptions to the time between about 6130 and 7790 years ago (calibrated years before present, cal …
Crater of Diamonds State Park History | Arkansas State Parks
The history of diamonds in Arkansas began when the first diamonds were found in Pike County, Arkansas in August 1906 by John Wesley Huddleston. These stones were sent to Charles S. Stifft, a Little Rock jeweler who confirmed them to be genuine diamonds. Stifft described them as blue-white diamonds, one weighing 2-5/8 carats, and the other 1-3/8 ...
Diamond Head, Hawaii
Diamond Head is a volcanic tuff cone on the Hawaiian island of Oʻahu.It is known to Hawaiians as Lēʻahi (pronounced [leːˈʔɐhi]), which is most likely derived from lae (browridge, promontory) plus ʻahi (tuna) because the shape of the ridgeline resembles the shape of a tuna's dorsal fin. Its English name was given by British sailors in the 19th …
Hope Diamond | Encyclopedia
Hope Diamond Famous precious stone with a reputation of bringing disaster to its owners. The Hope diamond is one of the largest colored diamonds known, a vivid blue and weighing 44.4 carats. It is believed to have been cut from an even larger stone of more than 67 carats. The name is derived from Henry Thomas Hope, a former owner who bought it …
Crater of Diamonds State Park | Arkansas State Parks
More than 35,000 diamonds have been found by park visitors since the Crater of Diamonds became an Arkansas state park in 1972. Notable diamonds found at the Crater include the 40.23-carat Uncle Sam, the largest diamond ever unearthed in the U.S.; the 16.37-carat Amarillo Starlight; the 15.33-carat Star of Arkansas; and the 8.52-carat …