earth science

Lemei Rock

Lemei Rock 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 Lemei Rock rather than just read about it. In short: Lemei Rock is a shield volcano, and part of the Indian Heaven polygenetic volcanic field in Washington, United States. It is located midway between Mount St.

Key takeaways

Lemei Rock 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 Lemei Rock to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lemei Rock from memory before moving on to harder problems.

Reference excerpt

Lemei Rock is a shield volcano, and part of the Indian Heaven polygenetic volcanic field in Washington, United States. It is located midway between Mount St. Helens and Mount Adams, and dates from the Pleistocene and Holocene. Lemei Rock is the highest point at 5,925 feet (1,806 m).

Geographical setting Lemei Rock is the highest peak within the Indian Heaven Wilderness in Washington. Lemei Rock has a topographic prominence of 2,405 feet (733 m). On clear days hikers can see views of four nearby volcanoes: Mount Adams, Mount Hood, Mount St. Helens, and Mount Rainier. The shield volcano is topped by a volcanic crater. While the crater rim is free of snow and ice, snow tends to linger on the summit well into July. A small crater lake by the name of Lake Wapiki, occupies the crater below the Lemei Rock high point. The Lost and Dry Creeks flow off of the southeast side of Lemei Rock and join the White Salmon River, while the Smokey, Little Goose, and Cultus flow from the east and northeast side, and joins Trout Lake Creek, which then discharges into the White Salmon River at Trout Lake. The Rush Creek flows from the west side of Lemei Rock and joins the Lewis River between the Lower Lewis River Falls Recreation Area and the Swift Reservoir.

Geology Lemei Rock is one of the many shield volcanoes topped by cinder cones and spatter cones that make up the Indian Heaven Volcanic Field. About 60 eruptive centers lie on the 19-mile (30 km) long, N10°E-trending, Indian Heaven fissure zone. The 230 square miles (600 km2) field has a volume of about 20 cubic miles (100 km3) and forms the western part of a 770-square-mile (2,000 km2) Quaternary basalt field in the southern Washington Cascades, including the King Mountain fissure zone along which Mount Adams was built.

Climbing and recreation

Fishing and hiking destinations in the volcanic field around Lemei Rock include the Indian Heaven Wilderness, which is known for the high mountain meadows among its scattered volcanic peaks. The Pacific Crest National Scenic Trail passes north/south through the volcanic field and the Indian Heaven Wilderness, which is known for its lakes and views of four nearby volcanoes: Mount Adams, Mount Hood, Mount St. Helens, and Mount Rainier. Major trails at Lemei Rock are the Lemei Trail, which climbs up the east side of Lemei Rock; and Wapiki Trail, which descends from the Lemei Trail to the deep blue Wapiki Lake, the "crater lake" of Lemei Rock. The Filloon Trail departs from the rustic Little Goose Campground and meets up with Lemei Trail before Lake Comcomly. The fifty-site Cultus Creek Campground, a destination for berry pickers, is located right at the edge of the Indian Heaven Wilderness. Cultus Creek Campground offers visitors two major trail heads (Indian Heaven Trail #33 and Cultus Creek Trail #108) and huckleberry picking access to the Indian Heaven Wilderness, known for its huckleberries, and the volcanic field in which it resides.

See also Cascade Volcanoes List of volcanoes in the United States Indian Heaven Wilderness Indian Heaven

References

External links

Gifford Pinchot National Forest - Indian Heaven Wilderness USGS - Indian Heaven Volcanic Field Lemei Rock Indian Heaven Wilderness Overview/Background Gifford Pinchot National Forest: Cultus Creek Campground Trail #34 Lemei Trail Printable Indian Heaven Wilderness Trail Vicinity Map (PDF 85 K, Adobe Acrobat)

Illustrations

Worked examples

Example 1 — a first encounter with Lemei Rock

Start with the simplest possible case. Write down what Lemei Rock 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 Lemei Rock 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 Lemei Rock 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 Lemei Rock

In research: Lemei Rock 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 Lemei Rock 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: Lemei Rock is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cascade Range, Cascade Volcanoes, Gifford Pinchot National Forest, so understanding it makes those chapters shorter.
In everyday life: Look for Lemei Rock 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 Lemei Rock in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lemei Rock 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 Lemei Rock out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lemei Rock in simple terms?

Lemei Rock is a shield volcano, and part of the Indian Heaven polygenetic volcanic field in Washington, United States. It is located midway between Mount St.

Why does Lemei Rock 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 Lemei Rock?

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 Lemei Rock.