Mount Erie is a mountain on

Fidalgo Island Fidalgo Island is an island in Skagit County, Washington, located about north of Seattle. To the east, it is separated from the mainland by the Swinomish Channel, and from Whidbey Island to the south by Deception Pass. The island is named after ...

Skagit County Skagit County is a county in the U.S. state of Washington. As of the 2020 census, the population was 129,523. The county seat and largest city is Mount Vernon. The county was formed in 1883 from Whatcom County and is named for the Skagit Ind ...

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

, United States. It is on public park land owned and managed by the city of Anacortes and is located in the south of the

Anacortes Community Forest Lands Anacortes Community Forest Lands (ACFL) consists of mostly forested lands surrounding and adjoining Little Cranberry, Heart, and Whistle Lakes on Fidalgo Island, west and south of Anacortes, Washington. Its highest point is Mount Erie, the high ...

. Mount Erie was named in 1841 by the

Wilkes Expedition The United States Exploring Expedition of 1838–1842 was an exploring and surveying expedition of the Pacific Ocean and surrounding lands conducted by the United States. The original appointed commanding officer was Commodore Thomas ap Catesby ...

for the

Battle of Lake Erie The Battle of Lake Erie, sometimes called the Battle of Put-in-Bay, was fought on 10 September 1813, on Lake Erie off the shore of Ohio during the War of 1812. Nine vessels of the United States Navy defeated and captured six vessels of the Briti ...

. The mountain itself was first explored in the 1960s by local climbers, including Dallas Kloke. It is known for its climbing as well as the view from the summit. The summit is accessible via a single-lane, paved road from the base. At tall, Mount Erie is the highest point on Fidalgo Island. On a clear day,

Mount Baker Mount Baker (Lummi: '; nok, Kw’eq Smaenit or '), also known as Koma Kulshan or simply Kulshan, is a active glacier-covered andesitic stratovolcano in the Cascade Volcanic Arc and the North Cascades of Washington in the United States. Mount ...

, about to the northeast, and

Mount Rainier Mount Rainier (), indigenously known as Tahoma, Tacoma, Tacobet, or təqʷubəʔ, is a large active stratovolcano in the Cascade Range of the Pacific Northwest, located in Mount Rainier National Park about south-southeast of Seattle. With a s ...

, about to the southeast, can be seen from the summit.

Geology

Located near the Fidalgo Complex in Washington's

San Juan Islands The San Juan Islands are an archipelago in the Pacific Northwest of the United States between the U.S. state of Washington and Vancouver Island, British Columbia, Canada. The San Juan Islands are part of Washington state, and form the core of ...

, Mount Erie has a unique and somewhat puzzling composition. The mountain is composed mostly of

feldspar Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldsp ...

- and

hornblende Hornblende is a complex inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole. Hornblende minerals are common in igneous and metamorphic rocks ...

-rich

diorite Diorite ( ) is an intrusive igneous rock formed by the slow cooling underground of magma (molten rock) that has a moderate content of silica and a relatively low content of alkali metals. It is intermediate in composition between low-silic ...

. It is thought to have been formed during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

period (155–170 Ma) by invasive volcanic flows creating batholithic masses of diorite, which also helped to create the island arcs associated with the San Juan Islands. By the end of the late Jurassic period the area experienced uplift and erosion and was subjected to intense folding and faulting. At this point most of the deposited Paleozoic and Mesozoic sediments had been eroded away, exposing the plutons of diorite, which is the primary igneous rock found on the mountain. At some point the diorite plutons experienced intrusion by

gabbro Gabbro () is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a holocrystalline mass deep beneath the Earth's surface. Slow-cooling, coarse-grained gabbro is che ...

dikes associated with the formation of oceanic seafloor, indicating that the area may have experienced periods of submersion as the Juan de Fuca plate subducted underneath the North American plate accreted the area. This whole process of constant uplift and erosion followed by accretion is thought to have created the unique

ophiolite An ophiolite is a section of Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed above sea level and often emplaced onto continental crustal rocks. The Greek word ὄφις, ''ophis'' (''snake'') is found i ...

s associated with the San Juan Islands and especially the Fidalgo Complex, of which Mount Erie is a part. During the Quaternary Period the area experienced many periods of glacial advance and retreat. Evidence for the glacial erosion of Mount Erie can be observed at the summit of the mountain as large striations in the diorite and gabbro. These periods of glacial erosion were separated by warming trends and continue to the present day. Big Rock in

Coupeville, Washington Coupeville is a town on Whidbey Island, in Island County, Washington, United States. It is the county seat of Island County. The population was 1,831 at the 2010 census. History Prior to European colonization, Coupeville and the bay in which i ...

, and the

Wedgwood Rock Wedgwood Rock is a glacial erratic (known to geologists as the Wedgwood Erratic) near the neighborhood of Wedgwood in Seattle, Washington. Its mineral composition matches that of Mount Erie, on Fidalgo Island in Skagit County, Washington,Bunn 20 ...

Seattle, Washington Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...

, are both

glacial erratics A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate betw ...

that originated on Mount Erie before being transported to their current locations.

In popular culture

American indie rock band

Mount Eerie Mount Eerie is the musical project of American songwriter and producer Phil Elverum. Elverum (also of The Microphones) is the principal member of the band, but has collaborated with many other musicians on his records and in live performances. ...

, known as

The Microphones The Microphones are an American indie folk, indie rock, and experimental project from Olympia, Washington. The project was founded in 1996 and ended in 2003, with a short reunion following in 2007 and revivals in 2019 and 2020. Across every it ...

before 2004, is named after the mountain. Principal singer/songwriter

Phil Elverum Philip Whitman Elverum (; born May 23, 1978) is an American musician, songwriter, record producer and visual artist, best known for his musical projects The Microphones and Mount Eerie. Based in Anacortes, Washington, in the mid-2000s he began ...

grew up in the area.

Notes

References

* *

External links

*{{cite gnis, 1512193, Mount Erie, accessdate=2010-03-05
City of Anacortes Parks
Anacortes, Washington

Erie Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 a ...

Parks in Washington (state)

Parks in Skagit County, Washington