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Tuesday, July 28, 2020 | History

2 edition of Volcanoes of the Medicine lake highland, California. found in the catalog.

Volcanoes of the Medicine lake highland, California.

Charles Alfred Anderson

Volcanoes of the Medicine lake highland, California.

by Charles Alfred Anderson

  • 393 Want to read
  • 32 Currently reading

Published by Johnson Reprint Corp. in New York .
Written in English

    Subjects:
  • Volcanoes -- California.

  • Edition Notes

    Statementby Charles A. Anderson.
    SeriesUniversity of California publications. Bulletin of the Department of geological sciences -- v. 25, no.7, University of California publications in geological sciences -- v. 25, no. 7.
    The Physical Object
    Pagination327-421p.
    Number of Pages421
    ID Numbers
    Open LibraryOL22374880M

      Hidden in the center of Medicine Lake volcano is a 7 km by 12 km summit caldera in which nestles its namesake, Medicine Lake. The flanks of Medicine Lake volcano, which are dotted with cinder cones, slope gently upward to the caldera rim, which reaches an elevation of nearly 8, ft (2, m). The maximum extent of lavas from this half-million. Perspective view of Medicine Lake as viewed from the Southwest. Larger copies of this and many other figures are available at Open-File Report which describes a recent project to 1) map the lake bottom, 2) study lake sediments to unravel the volcanic and climatic history of the region, and 3) understand the dynamics of mercury geochemistry.

    found: Volcanoes of the Medicine Lake Highland, California, title page (Charles A. Anderson) found: The Tuscan formation of northern California, with a discussion concerning the origin of volcanic breccias, title page (Charles A. Anderson). Anderson, C. A. Volcanoes of the Medicine Lake Highland, California in University of California Publications, Bulletin of the Department of Geological Sciences Vol Number 7, pages (As summarized by others.) Avery, Thomas Eugene and Graydon Lennis Berlin.

    Medicine Lake, at acres, lies at the center of "Medicine Lake Highland," an immense volcano immediately east of the much higher Mt. Shasta volcano. Although relatively low in elevation (7, feet), according to Kleyne, Medicine Lake Highland is the largest volcano in the United States in basal area and extremely active. Medicine Lake volcano forms a broad, seemingly nondescript highland, as viewed from any angle on the ground. Seen from an airplane, however, treeless lava flows are scattered across the surface of this potentially active volcanic edifice. Lavas of Medicine Lake volcano, which range in composition from basalt through rhyolite, cover more than 2, km2 east of the main axis .


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Volcanoes of the Medicine lake highland, California by Charles Alfred Anderson Download PDF EPUB FB2

Volcanoes of the Medicine Lake Highland, California [Anderson, Charles Alfred] on *FREE* shipping on qualifying offers. Volcanoes of the Medicine Lake Highland, CaliforniaAuthor: Charles Alfred Anderson. Get this from a library. Volcanoes of the Medicine Lake Highland, California.

[Charles A Anderson]. Medicine Lake Highland’s volcanic area exceeds square miles in Modoc and Siskiyou counties and encompasses portions of three National Forests including Modoc, Klamath and Shasta-Trinity.

Over the last half-million years, volcanic eruptions on the Medicine Lake shield volcano have created a rugged landscape dotted with diverse Volcanoes of the Medicine lake highland.

Approximatelyyears ago the great volcano underwent a series of eruptions which undermined the center of the mountain and the crest subsided to create a huge crater or caldera. Around the margins of this subsidence, new, smaller volcanoes arose; they are called rampart volcanoes.

Medicine Lake now partially fills the crater. Medicine Lake is a large shield volcano in northeastern California about 50 km (30 mi) northeast of Mount Shasta, rising about 1, metres (3, ft) above the Modoc Plateau to an elevation of 2, metres (7, ft).

Summary. Also known as the Medicine Lake Highlands, this volcanic region covers a total area of about 2, km 2 ( mi 2), extending approximately 80 km (50 mi) north-south and 50 km (30 mi) east-west.A shallow, but wide (7x12 km, x mi) caldera basin containing its namesake lake is located at the summit of the volcano.

Medicine Lake volcano lies in a strongly east-west extensional tectonic environment slightly east of the main Cascade Range arc axis on the Modoc Plateau in northern California. Shaded relief map shows locations of Medicine Lake volcano (red outline) and Mount Shasta with respect to the main axis of the Cascades Arc.

Medicine Lake Highlands. The Medicine Lake Highlands were formed with the development of a broad shield volcano. The center block collapsed along fractured lines, creating an enclosed basin or caldera, 6 miles long by 4 miles wide.

Lava then squeezed up the fracture lines forming rim volcanoes. On the boundary between the Cascades and the Modoc Plateau provinces are several shield volcano complexes, including Newberry Volcano in Oregon, and the broad dome of Medicine Lake Highland in California.

Even though the highest summit on MLH does not exceed 8, feet, the volume of the complex is more than cubic miles, as compared to. Journalof ArchaeologicalScience,9, Age and Exploitationof Obsidian from the Medicine Lake Highland,California Richard E.

Hughes' The relationship between major and minor elements, trace element composition, and age of obsidian sources within a volcanic field, is of considerable interest for obsidian source and artifact research in the New and Old.

_____Volcanoes of the Medicine Lake Highland, California: University of California Publications, Bulletin of the Department of Geological Sciences, vol. 25, no. 7, p. Plinian-type eruptions in the Medicine Lake Highland, California, and the nature of the underlying magma: Journal of Volcanology and Geothermal Research, vol.

Medicine Lake Volcano is a large shield volcano in northeastern California about 30 miles (50 km) northeast of Mount volcano is located in a zone of east-west crustal extension east of the main axis of the Cascade Volcanic Arc and the Cascade mile (1 km) thick shield is 22 miles (35 km) from east to west and 28 to 31 miles (45 to 50 km) from north.

The Clear Lake volcano is much different than Shasta and Lassen. Rather than being a single peak, it is a the volcanic field that consists of lava domes, cinder cones, and maars with eruptive products. Here you can see Mount Konocti, one of the two highest peaks in the volcanic field, from the lake.

Lavas from Medicine Lake volcano, Northern California have been examined for evidence of magma mixing. Mixing of magmas has produced basaltic andesite, andesite, dacite and rhyolite lavas at the volcano. We are able to identify the compositional characteristics of the components that were mixed and to estimate the time lag between the mixing event and eruption of the.

INTRODUCTION The Medicine Lake Highland is a km diameter shield volcano 55 km east of Mount Shasta, on the western margin of the Modoc Plateau.

The volcano is east of the north-south-trending chain of High Cascade volcanoes and within a km diameter depression filled with volcanic rocks of Plio- cene to Holocene age.

Anderson C A, Volcanoes of the Medicine Lake Highland California. Univ Calif Pub Geol Sci, Coombs H A, Howard A D, United States of America. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 9: Donnelly-Nolan J M, Geologic map of Medicine Lake volcano, northern California.

The Medicine Lake shield volcano is part of the Oregon high alumina plateau basalt petrologic province, as defined by Waters () and Higgins ().

The early eruptions are basaltic andesites and they constitute a significant portion of the shield-forming lavas.

These lavas are characterized by a mild iron enrichment trend produced by fractionation of plagioclase and. Those areas are considered to be at the second-highest risk category, as is Medicine Lake volcano in Siskiyou and Modoc counties. California’s volcanoes were more prolific in prehistoric.

One such flow of rhyolite to dacite composition, Glass Mountain in northern California, was formed by contamination of rhyolite magma as it intruded the basaltic flows of the Medicine Lake Highland shield volcano. The other California volcanoes on the list are: High threat: Mono-Inyo Craters, Clear Lake volcanic field, Medicine Lake, Salton Buttes.

Moderate threat: Mono Lake volcanic field, Coso volcanic. Medicine Lake volcano books: shield volcano 2, m / 7, ft California, Canada and USA (mainland), °N / °W. More on VolcanoDiscovery: Ijen flames. Blue flames of burning sulfur: Ijen volcano in East Java has one of the most impressive sulfur deposits on earth.

They are so hot that the sulfur often ignites - a mysterious.California Acad. Sciences, persona] correspondence,and Chesterman, C. W., California Div. Mines, unpublished map, ). For a complete list of published geologic maps of this area see Division of Mines Special Report View west from the Medicine Lake Highland .Medicine Lake Volcano is a large shield volcano in northeastern California about 30 miles (50 km) northeast of Mount volcano is located in a zone of east-west crustal extension east of the main axis of the Cascade Volcanic Arc and the Cascade Range.

The miles (1 km) thick shield is 22 miles (35 km) from east to west and 28 to 31 miles (45 to 50 km) from north .