The Early Winters Spires are two rock formations in the Liberty Bell Group of the North Cascade Range, set between Liberty Bell Mountain and

Blue Lake Peak Blue Lake Peak is the unofficial name of a 7,800+ ft summit in the Cascade Range, North Cascades Range in the U.S. state of Washington (U.S. state), Washington. It is located in the Okanogan–Wenatchee National Forest on the shared border of Ok ...

Washington state Washington (), officially the State of Washington, is a state in the Pacific Northwest region of the Western United States. Named for George Washington—the first U.S. president—the state was formed from the western part of the Washingto ...

, United States. The two spires (North and South) are virtually one granite massif, split by a deep cleft formed by jointing and erosion. The shapes of these spires are attributed to ice wedging, cleaving along master joints by soil acids, and perpetual weathering.

North Early Winters Spire

Elevation: 7,760 ft/ 2,366 m First ascent: May 28, 1950/. Wesley Grande,

Pete Schoening Peter Kittilsby Schoening (July 30, 1927 – September 22, 2004) was an American mountaineer. Schoening and Andrew Kauffman was two Americans to first successfully climb the Pakistani peak Gasherbrum I in 1958, and was one of the first to summit M ...

, and Dick Widrig.

South Early Winters Spire

Elevation: 7,807 ft/ 2,380 m First ascent: July 20, 1937. Kenneth Adam, Raffi Bedayn, and W. Kenneth Davis were credited in their report of first ascent however, only Bedayn and Neil Ruge appear in the summit register.

Climate

Early Winters Spires are located in the

marine west coast An oceanic climate, also known as a marine climate, is the humid temperate climate sub-type in Köppen classification ''Cfb'', typical of west coasts in higher middle latitudes of continents, generally featuring cool summers and mild winters ...

climate zone of western North America. Most

weather front A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary. For ...

s originate in the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...

, and travel northeast toward the

Cascade Mountains The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...

. As fronts approach the

North Cascades The North Cascades are a section of the Cascade Range of western North America. They span the border between the Canadian province of British Columbia and the U.S. state of Washington and are officially named in the U.S. and Canada as the C ...

, they are forced upward by the peaks of the Cascade Range (

Orographic lift Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and cr ...

), causing them to drop their moisture in the form of

rain Rain is water droplets that have condensed from atmospheric water vapor and then fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water ...

snowfall Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout ...

onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer. Beckey, p. 16 Because of maritime influence, snow tends to be wet and heavy, resulting in high

avalanche An avalanche is a rapid flow of snow down a slope, such as a hill or mountain. Avalanches can be set off spontaneously, by such factors as increased precipitation or snowpack weakening, or by external means such as humans, animals, and ear ...

danger. Precipitation

runoff Runoff, run-off or RUNOFF may refer to: * RUNOFF, the first computer text-formatting program * Runoff or run-off, another name for bleed, printing that lies beyond the edges to which a printed sheet is trimmed * Runoff or run-off, a stock market ...

from the northeast side of the spires drains into Early Winters Creek which is a tributary of the

Methow River The Methow River ( ) is a tributary of the Columbia River in northern Washington in the United States. The river's watershed drains the eastern North Cascades, with a population of about 5,000 people. The Methow's watershed is characterized by ...

, whereas the southwest slope drains into a tributary of the

Chelan River The Chelan River is a tributary of the Columbia River, in the U.S. state of Washington. Just long, it is the shortest river in Washington. Lake Chelan Dam is located at the river's source: the outlet of Lake Chelan. Nearly the entire river's ...

Geology

The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, ridges, and deep

glacial valley U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight s ...

s. The history of the formation of the Cascade Mountains dates back millions of years ago to the late

Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ...

Epoch. With the

North American Plate The North American Plate is a tectonic plate covering most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores. With an area of , it is the Earth's second largest tectonic plate, behind the Pacifi ...

overriding the

Pacific Plate The Pacific Plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At , it is the largest tectonic plate. The plate first came into existence 190 million years ago, at the triple junction between the Farallon, Phoenix, and I ...

, episodes of volcanic igneous activity persisted. In addition, small fragments of the

oceanic Oceanic may refer to: *Of or relating to the ocean *Of or relating to Oceania **Oceanic climate **Oceanic languages **Oceanic person or people, also called "Pacific Islander(s)" Places *Oceanic, British Columbia Oceanic is an unincorporated set ...

and

continental lithosphere A lithosphere () is the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of up to thousands of years or ...

called

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its ow ...

s created the

about 50 million years ago. During the

Pleistocene The Pleistocene ( , often referred to as the '' Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed ...

period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The U-shaped cross section of the river valleys are a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.

References

{{Geographic Location 2 , Center = Early Winters Spires , North = Hinkhouse Peak , Northeast =

Big Kangaroo Big Kangaroo is an granitic mountain located in Okanogan County, Washington. The mountain is part of the Methow Mountains in the Cascade Range. Big Kangaroo is the high point of Kangaroo Ridge which is about two miles east and within view of Wa ...

, ENE =

Kangaroo Ridge Kangaroos are four marsupials from the family Macropodidae (macropods, meaning "large foot"). In common use the term is used to describe the largest species from this family, the red kangaroo, as well as the antilopine kangaroo, eastern ...

, East = Half Moon/ Wallaby Peak , Southeast =

Pica Peak Pica Peak is a summit located in the Methow Mountains, a subset of the North Cascades, on the shared border between Okanogan County and Chelan County in Washington state. Pica Peak is situated southeast of Washington Pass, within the Okanoga ...

/ Copper Benchmark , South =

, Southwest = Rainy Peak , WSW = Frisco Mountain , West =

Whistler Mountain Whistler Mountain is a mountain in the Fitzsimmons Range of the Pacific Ranges of the Coast Mountains, located on the northwestern edge of Garibaldi Provincial Park. It is the location of the Whistler-Blackcomb ski resort and the town of Whi ...

, WNW = Cutthroat Peak , Northwest = Liberty Bell Mountain North Cascades of Washington (state) Rock formations of Washington (state) Cascade Range North Cascades