Trask Mountain in the Northern Oregon Coast Range

Northern Oregon Coast Range

The Northern Oregon Coast Range is the northern section of the Oregon Coast Range, in the Pacific Coast Ranges physiographic region, located in the northwest portion of the state of Oregon, United States. This section of the mountain range, part of the Pacific Coast Ranges, contains peaks as high...

, is the tallest mountain in Yamhill County, Oregon

Yamhill County, Oregon

-National protected areas:*Siuslaw National Forest *Tualatin River National Wildlife Refuge -Demographics:As of the census of 2000, there were 84,992 people, 28,732 households, and 21,376 families residing in the county. The population density was 119 people per square mile . There were 30,270...

.
It is located in the northwest corner of the county.
Evidently the mountain was named for Elbridge Trask

Elbridge Trask

Elbridge Trask was an American fur trapper and mountain man in the Oregon Country. Immortalized by a series of modern historical novels by Don Berry, he is best known as an early white settler along Tillamook Bay on the coast of the U.S. state of Oregon.-Biography:He was born in Beverly,...

 who settled west of the peak in Tillamook County

Tillamook County, Oregon

Tillamook County is a county located in the U.S. state of Oregon. The county is named for the Tillamook, a Native American tribe who were living in the area in the early 19th century at the time of European American settlement. In 2010, the county's population was 25,250...

 in 1852.

Geology

The mountain is composed of mainly volcanic rock with some sedimentary rocks.
Like much of the northern section of the Oregon Coast Range

Oregon Coast Range

The Oregon Coast Range, often called simply the Coast Range and sometimes the Pacific Coast Range, is a mountain range, in the Pacific Coast Ranges physiographic region, in the U.S. state of Oregon along the Pacific Ocean...

, the origins began around 40 million years ago during the Eocene

Eocene

The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...

 period. During this era, sandstone and siltstone formed in the area.
Additionally, igneous rocks and basalt flows combined with basaltic sandstone

Sandstone

Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains.Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow,...

 to create many of the mountainous formations. The volcanic rocks come from basalt flows that covered much of Oregon that originated from fissures in the central portion of the state.
Additional sedimentary rock was formed more recently, around 20 million years ago.

All of the coast range lies over a convergent tectonic margin interacting with the Juan de Fuca Plate

Juan de Fuca Plate

The Juan de Fuca Plate, named after the explorer of the same name, is a tectonic plate, generated from the Juan de Fuca Ridge, and subducting under the northerly portion of the western side of the North American Plate at the Cascadia subduction zone...

 that is subducting beneath North America tectonic plate

North American Plate

The North American Plate is a tectonic plate covering most of North America, Greenland, Cuba, Bahamas, and parts of Siberia, Japan and Iceland. It extends eastward to the Mid-Atlantic Ridge and westward to the Chersky Range in eastern Siberia. The plate includes both continental and oceanic crust...

 in the Cascadia subduction zone

Cascadia subduction zone

The Cascadia subduction zone is a subduction zone, a type of convergent plate boundary that stretches from northern Vancouver Island to northern California. It is a very long sloping fault that separates the Juan de Fuca and North America plates.New ocean floor is being created offshore of...

.
The mountains are created by the plunging structural arch of sedimentary and Tertiary volcanic strata that is being uplifted.

Flora and fauna

Vegetation in the area includes Sitka Spruce

Sitka Spruce

Picea sitchensis, the Sitka Spruce, is a large coniferous evergreen tree growing to 50–70 m tall, exceptionally to 95 m tall, and with a trunk diameter of up to 5 m, exceptionally to 6–7 m diameter...

, Douglas-fir

Douglas-fir

Douglas-fir is one of the English common names for evergreen coniferous trees of the genus Pseudotsuga in the family Pinaceae. Other common names include Douglas tree, and Oregon pine. There are five species, two in western North America, one in Mexico, and two in eastern Asia...

, Western Hemlock

Western Hemlock

Tsuga heterophylla. the Western Hemlock, is a species of hemlock native to the west coast of North America, with its northwestern limit on the Kenai Peninsula, Alaska, and its southeastern limit in northern Sonoma County, California.-Habitat:...

, Western Redcedar

Thuja plicata

Thuja plicata, commonly called Western or pacific red cedar, giant or western arborvitae, giant cedar, or shinglewood, is a species of Thuja, an evergreen coniferous tree in the cypress family Cupressaceae native to western North America...

, Salmonberry

Salmonberry

Rubus spectabilis is a species of Rubus native to the west coast of North America from west central Alaska to California....

, Red Alder

Red Alder

Alnus rubra, the Red alder, is a deciduous broadleaf tree native to western North America.-Description:It is the largest species of alder in North America and one of the largest in the world, reaching heights of 20–35 m. The official tallest red alder stands 32 meters tall in Clatsop County, Oregon...

, Western Sword Fern

Polystichum munitum

Polystichum munitum is an evergreen fern native to western North America, where it is one of the most abundant ferns occurring along the Pacific coast from southeast Alaska south to southern California, and also inland east to southeastern British Columbia, northern Idaho and western Montana, with...

, and Vine Maple

Vine Maple

Acer circinatum is a species of maple native to western North America, from southwest British Columbia to northern California, always within 300 km of the Pacific Ocean coast....

 among many others.
Other plant life native to the mountains are Coptis laciniata

Coptis

Coptis is a genus of between 10–15 species of flowering plants in the family Ranunculaceae, native to Asia and North America.-Species:Selected species*Coptis aspleniifolia*Coptis chinensis...

, Salal

Salal

Gaultheria shallon is a leathery-leaved shrub in the heather family , native to western North America. In English it is known as salal, shallon, or in Britain simply Gaultheria.-Ecology:...

, Oregon-grape

Oregon-grape

Oregon-grape is an evergreen shrub related to the barberry. Some authors place Mahonia in the barberry genus, Berberis...

, and Bracken Fern

Pteridium aquilinum

Pteridium aquilinum is a species of fern occurring in temperate and subtropical regions throughout much of the northern hemisphere....

.

Different insects can include spider

Spider

Spiders are air-breathing arthropods that have eight legs, and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms...

s, beetle

Beetle

Coleoptera is an order of insects commonly called beetles. The word "coleoptera" is from the Greek , koleos, "sheath"; and , pteron, "wing", thus "sheathed wing". Coleoptera contains more species than any other order, constituting almost 25% of all known life-forms...

s, and various centipede

Centipede

Centipedes are arthropods belonging to the class Chilopoda of the subphylum Myriapoda. They are elongated metameric animals with one pair of legs per body segment. Despite the name, centipedes can have a varying number of legs from under 20 to over 300. Centipedes have an odd number of pairs of...

s. Mammals include weasel

Weasel

Weasels are mammals forming the genus Mustela of the Mustelidae family. They are small, active predators, long and slender with short legs....

s, chipmunk

Chipmunk

Chipmunks are small striped squirrels native to North America and Asia. They are usually classed either as a single genus with three subgenera, or as three genera.-Etymology and taxonomy:...

s, black bear

American black bear

The American black bear is a medium-sized bear native to North America. It is the continent's smallest and most common bear species. Black bears are omnivores, with their diets varying greatly depending on season and location. They typically live in largely forested areas, but do leave forests in...

s, hare

Hare

Hares and jackrabbits are leporids belonging to the genus Lepus. Hares less than one year old are called leverets. Four species commonly known as types of hare are classified outside of Lepus: the hispid hare , and three species known as red rock hares .Hares are very fast-moving...

s and deer

Deer

Deer are the ruminant mammals forming the family Cervidae. Species in the Cervidae family include white-tailed deer, elk, moose, red deer, reindeer, fallow deer, roe deer and chital. Male deer of all species and female reindeer grow and shed new antlers each year...

. Birds include kinglet

Kinglet

The kinglets or crests are a small group of birds sometimes included in the Old World warblers, but are frequently given family status because they also resemble the titmice. The scientific name Regulidae is derived from the Latin word regulus for "petty king" or prince, and comes from the...

s, chickadee

Chickadee

Chickadee is a group of birds in the Paridae familyChickadee may also refer to:* USS Chickadee , a minesweeper in the United States Navy* Chickadee , a Canadian children's magazine-See also:* Black-capped Chickadee...

s, woodpecker

Woodpecker

Woodpeckers are near passerine birds of the order Piciformes. They are one subfamily in the family Picidae, which also includes the piculets and wrynecks. They are found worldwide and include about 180 species....

s, and jay

Jay

The jays are several species of medium-sized, usually colorful and noisy, passerine birds in the crow family Corvidae. The names jay and magpie are somewhat interchangeable, and the evolutionary relationships are rather complex...

s.

Other

In the northwest part of the county, the mountain is in private forest land owned by Weyerhaeuser

Weyerhaeuser

Weyerhaeuser is one of the largest pulp and paper companies in the world. It is the world's largest private sector owner of softwood timberland; and the second largest owner of United States timberland, behind Plum Creek Timber...

.
Trask Mountain makes up a portion of the North Yamhill River

North Yamhill River

The North Yamhill River is a tributary of the Yamhill River in the U.S. state of Oregon. It drains an area of the Northern Oregon Coast Range, as well as part of the Willamette Valley west of the Willamette River....

 headwaters that drain to the Willamette River

Willamette River

The Willamette River is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is long, lying entirely in northwestern Oregon in the United States...

. On its north side, drainage is to the Trask River

Trask River

The Trask River is in northwestern Oregon in the United States. It drains a mountainous timber-producing area of the Northern Oregon Coast Range west of Portland into Tillamook Bay and the Pacific Ocean...

 which flows west to the Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

. The mountain receives over 135 inches (3,429 mm) or precipitation each year. The mountain is home to a U.S. Geologic Survey seismograph station that was installed in 1991.
Previously, the peak was home to a fire lookout station that was abandoned in the 1970s.
There are plans to construct a 50 Megawatt wind power facility atop the mountain beginning in 2009.

In 1997, Dundee, Oregon

Dundee, Oregon

Dundee is a city in Yamhill County, Oregon, United States. The population was 2,598 at the 2000 census. The 2007 estimate is 3,040 residents.-History:...

resident Lee John Knoch beat Robert Allen Holliday nearly to death and buried him alive on Trask Mountain.