earth science

Mount Rexford

Mount Rexford is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mount Rexford rather than just read about it. In short: Mount Rexford is a prominent 2,329-metre (7,641-foot) mountain summit located in the Cascade Mountains of southwestern British Columbia, Canada. It is situated 3.5 km (2 mi) north of the Canada–United States border, 7 km (4 mi) west of Chilliwack Lake, and 5.5 km (3 mi) east of Slesse Mountain, which is its nearest higher neighbor.

Key takeaways

Mount Rexford belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mount Rexford to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mount Rexford from memory before moving on to harder problems.

Reference excerpt

Mount Rexford is a prominent 2,329-metre (7,641-foot) mountain summit located in the Cascade Mountains of southwestern British Columbia, Canada. It is situated 3.5 km (2 mi) north of the Canada–United States border, 7 km (4 mi) west of Chilliwack Lake, and 5.5 km (3 mi) east of Slesse Mountain, which is its nearest higher neighbor. Precipitation runoff from the peak drains into Nesakwatch and Centre Creeks, both tributaries of the Chilliwack River. Originally known as Ensawkwatch, the mountain was named for an early settler in the area, Rexford, who had a cabin near Slesse Creek and had trap lines in the vicinity. The mountain has two subsidiary peaks known as the Nesakwatch Spires. The mountain's name was officially adopted on June 2, 1950, by the Geographical Names Board of Canada. Mount Rexford was first climbed in July 1951 by Herman Genschorek and Walt Sparling via the South Face. The popular West Ridge was first climbed by Gordon Dunham, Peter Thompson, and Bob and Glenn Woodsworth; Sept 16, 1962.

Geology Mount Rexford is composed of granitic rock related to the Chilliwack batholith, which intruded the region 26 to 29 million years ago after the major orogenic episodes in the region. This is part of the Pemberton Volcanic Belt, an eroded volcanic belt that formed as a result of subduction of the Farallon Plate starting 29 million years ago. During the Pleistocene 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 is 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. The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks and ridges, deep glacial valleys, and granite spires. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to various climate differences which lead to vegetation variety defining the ecoregions in this area.

Climate Based on the Köppen climate classification, Mount Rexford is located in the marine west coast climate zone of western North America. Most weather fronts originate in the Pacific Ocean, and travel east toward the Cascade Range where they are forced upward by the range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall. As a result, the Cascade Mountains experience high precipitation, especially during the winter months in the form of snowfall. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C. The months July through September offer the most favorable weather for climbing Rexford.

Climbing Routes Established rock climbing routes on Mount Rexford:

West Ridge - class 4 First Ascent 1962 Northeast Ridge - class 5 FA 1969 The Priest-Coupe (NE couloir) - class 5 FA 1970 East Ridge - class 5.7 FA 1973 South Ridge - class 4 FA 1981 Southwest Flank - class 3-4 FA 1951 Southeast Arete - class 3-4

Gallery

Illustrations

Worked examples

Example 1 — a first encounter with Mount Rexford

Start with the simplest possible case. Write down what Mount Rexford claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mount Rexford before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mount Rexford ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mount Rexford

In research: Mount Rexford appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Mount Rexford in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Mount Rexford is common in secondary-school and first-year university syllabi. It links to neighbouring topics Pemberton Volcanic Belt, Skagit Range, Two-thousanders of British Columbia, so understanding it makes those chapters shorter.
In everyday life: Look for Mount Rexford outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Mount Rexford in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mount Rexford means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Mount Rexford out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mount Rexford in simple terms?

Why does Mount Rexford matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mount Rexford?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mount Rexford.