earth science

Geologists Seamounts

Geologists Seamounts 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 Geologists Seamounts rather than just read about it. In short: Geologists Seamounts (alternatively were named South West Hawaii Group) are a cluster of seamounts in the Pacific Ocean, located mainly 100 miles (160 km) south of Oahu, Hawaii and 100–200 kilometres (62–124 mi) south-west from Big Island (Hawaiʻi). Clockwise from north they are named Perret, Jaggar, McCall, Pensacola, Daly, Swordfish, Cross, Washington and Ellis.

Key takeaways

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

Reference excerpt

Geologists Seamounts (alternatively were named South West Hawaii Group) are a cluster of seamounts in the Pacific Ocean, located mainly 100 miles (160 km) south of Oahu, Hawaii and 100–200 kilometres (62–124 mi) south-west from Big Island (Hawaiʻi). Clockwise from north they are named Perret, Jaggar, McCall, Pensacola, Daly, Swordfish, Cross, Washington and Ellis. The Kauluakalana seamount to the north of Oahu on the far side of the Hawaiian chain to the other seamounts of the cluster, and south-east of the Musicians Seamounts has reason to be regarded as part of the Geologists Seamounts, but would not so be grouped logically by the former name for the cluster.

Geology The mountains have a height above seafloor of about 5 kilometres (3.1 mi). They developed on a mid-ocean ridge during the Cretaceous, about 80 million years ago, and there is no geological relationship to the neighbouring Hawaiian Islands. There is about contemporaneous timing with the formation of the Musicians Seamounts to the north-west of Oahu and Hawaiʻi, from the limited sampling and analysis to date. Ages that have been obtained include 80.5 Ma for Kauluakalana, 84.5 Ma for Cross and 82.7 Ma for McCall. Rocks dredged from the seamounts include iron-manganese crusts, carbonates and basalts.

Ecology Corals and sponges have been recorded at the south-western Swordfish Seamount at a depth of 1,071 m (3,514 ft) with plexauridae, alcyonacea, and coralliidae corals. The deeper coral community on Ellis Seamount at a depth of 2,135 m (7,005 ft) was less diverse with bamboo corals dominant, but coverage is still widespread.

References

Sources

Illustrations

Worked examples

Example 1 — a first encounter with Geologists Seamounts

Start with the simplest possible case. Write down what Geologists Seamounts 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 Geologists Seamounts 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 Geologists Seamounts 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 Geologists Seamounts

In research: Geologists Seamounts 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 Geologists Seamounts 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: Geologists Seamounts is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cretaceous volcanism, Oceanography stubs, Seamounts of the Pacific Ocean, so understanding it makes those chapters shorter.
In everyday life: Look for Geologists Seamounts 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Geologists Seamounts in 20 minutes

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

Frequently asked questions

What is Geologists Seamounts in simple terms?

Why does Geologists Seamounts 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 Geologists Seamounts?

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 Geologists Seamounts.