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Posts tagged Siskiyou County

Fire West of Mount Shasta, California

41.3N 122.3W

August 26th, 2009 Category: Fires, Volcanoes

Northern California, USA - August 25th, 2009

Northern California, USA - August 25th, 2009

A wildfire burning west of Mount Shasta, in northern California, releases a plume of smoke that is blowing in a north-northeasterly direction towards the Oregon border above.

The fire is located in Klamath National Forest, a 1,737,774-acre (2,715.27 sq mi, or 7,032.52 kmĀ²) national forest overwhelmingly located in Siskiyou County in northern California, but with a tiny extension (1.5 percent of the forest) into southern Jackson County in Oregon.

The forest contains continuous stands of ponderosa pine, Jeffrey pine, Douglas fir, red fir, white fir and incense cedar. Old growth forest is estimated to cover some 168,000 acres (680 km2) of the forest land.

Mount Shasta, California, USA

41.3N 122.3W

July 1st, 2009 Category: Volcanoes

California, USA - June 30th, 2009

California, USA - June 30th, 2009

This orthorectified ASAR (radar) image shows Mount Shasta, a 14,179-foot (4,322 m) stratovolcano that is the second-highest peak in the Cascade Range and the fifth highest peak in California. It is a member of the Cascade Volcanic Arc and is located in Siskiyou County.

Mount Shasta is not connected to any nearby mountain; as can be seen here, it rises abruptly from miles of level ground which encircle it, standing nearly 10,000 feet (3,000 m) above the surrounding area.

Mount Shasta has an estimated volume of 108 cubic miles (450 km3), making it the most voluminous stratovolcano in the Cascades.

The mountain consists of four overlapping volcanic cones which have built a complex shape, including the main summit and the prominent satellite cone of 12,330-foot (3,760 m) Shastina, which has a visibly conical form. If Shastina were a separate mountain, it would rank as the third-highest peak of the Cascade Range.

Mount Shasta’s surface is relatively free of deep glacial erosion except, paradoxically, for its south side where Sargents Ridge runs parallel to the U-shaped Avalanche Gulch. This is the largest glacial valley on the volcano, although it does not presently have a glacier in it.