Glacial history of mount hood in oregon

This study seeks to: The hypothesis is that the lateral moraines for Eliot Glacier represent three distinct periods of glacial advance based on their position relative to the current glacier and other diagnostic indicators.

Glacial history of mount hood in oregon

Helens, located in southwestern Washington about 50 miles northeast of Portland, Oregon, is one of several lofty volcanic peaks that dominate the Cascade Range of the Pacific Northwest; the range extends from Mount Garibaldi in British Columbia, Canada, to Lassen Peak in northern California.

Geologists call Mount St. Helens a composite volcano or stratovolcanoa term for steepsided, often symmetrical cones constructed of alternating layers of lava flows, ash, and other volcanic debris. Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property.

In contrast, the gently sloping shield volcanoes, such as those in Hawaii, typically erupt nonexplosively, producing fluid lavas that can flow great distances from the active vents.

Although Hawaiian-type eruptions may destroy property, they rarely cause death or injury. Beforesnow-capped, gracefully symmetrical Mount St. Helens was known as the "Fujiyama of America.

Helens, other active Cascade volcanoes, and those of Alaska form the North American segment of the circum-Pacific "Ring of Fire," a notorious zone that produces frequent, often destructive, earthquake and volcanic activity.

Helens "Louwala-Clough," or "smoking mountain. Helens, was given to the volcanic peak in by Captain George Vancouver of the British Royal Navy, a seafarer and explorer. He named it in honor of a fellow countryman, Alleyne Fitzherbert, who held the title Baron St. Helens and who was at the time the British Ambassador to Spain.

Vancouver also named three other volcanoes in the Cascades--Mounts Baker, Hood, and Rainier--for British naval officers. Indians on the Cowlitz River watching an eruption of Mount St.

Helens, as painted by Canadian artist Paul Kane following a visit to the volcano in Photograph courtesy of the Royal Ontario Museum. Indian Legend of Mount St. Helens Eruption Before Mt. Helens blew its top is was a beautifully symmetric rounded snow-capped mountain that stood between two powerfully jagged peaks Mt.

Hood which Indians called Wy'east and Mt. Adams which Indians called Klickitat. According to one Indian legend, the mountain was once a beautiful maiden, "Loowit".

Global Volcanism Program | St. Helens

When two sons of the Great Spirit "Sahale" fell in love with her, she could not choose between them. The two braves, Wyeast and Klickitat fought over her, burying villages and forests in the process hurling rocks as they erupted? He smote the three lovers and erected a mighty mountain peak where each fell.

Because Loowit was beautiful, her mountain Mount St.

Glacial history of mount hood in oregon

Helens was a beautiful, symmetrical cone of dazzling white.Mount Hood, called Wy'east by the Multnomah tribe, is a potentially active stratovolcano in the Cascade Volcanic Arc of northern was formed by a subduction zone on the Pacific coast and rests in the Pacific Northwest region of the United is located about 50 miles (80 km) east-southeast of Portland, on the border between Clackamas and Hood River counties.

Mount Hood's Sandy Glacier Caves in January of Photo by Tyson Gillard. Scientists have documented the recent and widespread retreat of glaciers due to climate change for a number of years.

Note: Check current trail conditions before starting this hike. Early season hiking on this trail may be hazardous. Rest on benches or rocks. Stay on trail to protect delicate subalpine plants.

The trailhead is located near the entrance to the Jackson Visitor Center at Paradise, marked by stone. Explanation of map units Alluvial and glacial deposits al Alluvium gin Till of neoglacial age get Till, Evans Creek advance Mount Hood volcano: clastic. Glaciation. Numerous glacial episodes have iced over the Oregon Cascade Range during the past two million years.

The most recent glacial maximum was about 20, years ago, when ice formed a continuous cap from north of Mount Jefferson southward to Mount that time, lobes of ice descended into the major river valleys along the west side of the range, reaching as low as 2, feet.

Mount Hood, composed primarily of andesite and dacite, is considered one of the Stratovolcanic Mountain in the Cascade Volcanic Arc in northwest Oregon, in the United States of America; having existed for more than , years (Wikipedia).

Mount Jefferson (Oregon) - Wikipedia