Tag Archives: wildfire

10-03-21 – Sierra Autumn Roadtrip


I took a road trip through the Eastern Sierra in search of autumn colors after another long, hot summer of isolation. This short trip took in Virginia Lake, June Lake Loop, and the Obsidian Dome area.

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The Eastern Sierra is a region in California comprising the eastern side of the Sierra Nevada, which includes Mono and Inyo Counties. The main thoroughfare is U.S. Route 395, which passes through Bridgeport, Lee Vining, Bishop, Big Pine, Independence, Lone Pine, and Olancha, with Bishop being the largest city in the area. It is sparsely populated but well known for its scenery; major points of interest include Mono Lake, Bodie, Mammoth Lakes, Manzanar, and parts of Yosemite National Park and Death Valley National Park.

Source: Wikipedia
https://en.wikipedia.org/wiki/Eastern_Sierra

10-02-20 – 10-04-20 – Autumn Roadtrip in Eastern Sierra


I took a road trip through the Eastern Sierra in search of autumn colors after a long, hot summer of isolation. While I encountered a lot of smoke from the devastating wildfires that plagued California this summer, I also found beauty. This trip took in Alabama Hills, Lake Tahoe, Virginia Lake, June Lake Loop, Lake Crowley, and Bishop Creek Canyon, as well as numerous dirt trails.

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The Eastern Sierra is a region in California comprising the eastern side of the Sierra Nevada, which includes Mono and Inyo Counties. The main thoroughfare is U.S. Route 395, which passes through Bridgeport, Lee Vining, Bishop, Big Pine, Independence, Lone Pine, and Olancha, with Bishop being the largest city in the area. It is sparsely populated but well known for its scenery; major points of interest include Mono Lake, Bodie, Mammoth Lakes, Manzanar, and parts of Yosemite National Park and Death Valley National Park.

Source: Wikipedia
https://en.wikipedia.org/wiki/Eastern_Sierra

08-17_18-19 – Mono Lake


Mono Lake is a large, shallow saline soda lake in Mono County, California, formed at least 760,000 years ago as a terminal lake in an endorheic basin. The lack of an outlet causes high levels of salts to accumulate in the lake. These salts also make the lake water alkaline.

This desert lake has an unusually productive ecosystem based on brine shrimp that thrive in its waters, and provides critical habitat for two million annual migratory birds that feed on the shrimp and alkali flies. Historically, the native Kutzadika’a people derived nutrition from the Ephydra hians pupae, which live in the shallow waters around the edge of the lake.

When the city of Los Angeles diverted water from the freshwater streams flowing into the lake, it lowered the lake level, which imperiled the migratory birds.

Mono Lake occupies part of the Mono Basin, an endorheic basin that has no outlet to the ocean. Dissolved salts in the runoff thus remain in the lake and raise the water’s pH levels and salt concentration. The tributaries of Mono Lake include Lee Vining Creek, Rush Creek and Mill Creek which flows through Lundy Canyon.

The basin was formed by geological forces over the last five million years: basin and range crustal stretching and associated volcanism and faulting at the base of the Sierra Nevada. Five million years ago, the Sierra Nevada was an eroded set of rolling hills and Mono Basin and Owens Valley did not yet exist.

From 4.5 to 2.6 million years ago, large volumes of basalt were extruded around what is now Cowtrack Mountain (east and south of Mono Basin); eventually covering 300 square miles (780 km2) and reaching a maximum thickness of 600 feet (180 m). Later volcanism in the area occurred 3.8 million to 250,000 years ago. This activity was northwest of Mono Basin and included the formation of Aurora Crater, Beauty Peak, Cedar Hill (later an island in the highest stands of Mono Lake), and Mount Hicks.

Mono Lake is believed to have formed at least 760,000 years ago, dating back to the Long Valley eruption. Sediments located below the ash layer hint that Mono Lake could be a remnant of a larger and older lake that once covered a large part of Nevada and Utah, which would put it among the oldest lakes in North America. At its height during the most recent ice age, the lake would have been about 900 feet (270 m) deep. Prominent old shore lines, called strandlines by geologists, can be seen west of the Lake.

Currently, Mono Lake is in a geologically active area at the north end of the Mono–Inyo Craters volcanic chain and is close to Long Valley Caldera. Volcanic activity continues in the Mono Lake vicinity: the most recent eruption occurred 350 years ago, resulting in the formation of Paoha Island. Panum Crater (on the south shore of the lake) is an example of a combined rhyolite dome and cinder cone.

Tufa towers
Many columns of limestone rise above the surface of Mono Lake. These limestone towers consist primarily of calcium carbonate minerals such as calcite (CaCO3). This type of limestone rock is referred to as tufa, which is a term used for limestone that forms in low to moderate temperatures.