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McMurdo Volcanic Group

McMurdo Volcanic Group 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 McMurdo Volcanic Group rather than just read about it. In short: The McMurdo Volcanic Group is a large group of Cenozoic volcanic rocks in the western Ross Sea and central Transantarctic Mountains areas of Antarctica. It is one of the largest provinces of alkaline volcanism in the world, having formed as a result of continental rifting along the West Antarctic Rift System.

McMurdo Volcanic Group — main illustration
McMurdo Volcanic Group — illustration

Key takeaways

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

Reference excerpt

The McMurdo Volcanic Group is a large group of Cenozoic volcanic rocks in the western Ross Sea and central Transantarctic Mountains areas of Antarctica. It is one of the largest provinces of alkaline volcanism in the world, having formed as a result of continental rifting along the West Antarctic Rift System. The McMurdo Volcanic Group is part of the Western Ross Supergroup, a stratigraphic unit that also includes the Meander Intrusive Group.

Subdivisions Three subprovinces comprise the McMurdo Volcanic Group, namely the Hallett, Melbourne and Erebus volcanic provinces. The Balleny Volcanic Province along the Balleny fracture zone in the Southern Ocean was originally defined as a part of the McMurdo Volcanic Group but it is now excluded due to its location on oceanic crust with no obvious geographic or tectonic relationship to the other McMurdo volcanic provinces.

Hallett Volcanic Province

The Hallett Volcanic Province in northern Victoria Land is situated along the margin of the Transantarctic Mountains. It consists of a 260 km (160 mi) long chain of four major elongated shield volcano complexes that were originally interpreted to have erupted subglacially under a larger Antarctic ice sheet. Later studies showed that they erupted in a subaerial environment instead.

Volcanoes

Melbourne Volcanic Province

The Melbourne Volcanic Province is also in northern Victoria Land and forms an arcuate band extending from the Ross Sea coast into the Transantarctic Mountains. It consists of large volcanic centres and small but widely distributed basaltic vents.

Volcanoes

Erebus Volcanic Province

The Erebus Volcanic Province is in southern Victoria Land. It includes marine volcanic centres in the southwest Ross Sea, major volcanic complexes in southern McMurdo Sound and several small basaltic centres in the McMurdo Dry Valleys, as well as along the foothills of the Royal Society Range.

Volcanoes

See also List of volcanoes in Antarctica

References

Illustrations

McMurdo Volcanic Group: Mount Melbourne seen from the ice-covered Ross Sea. It is part of the Melbourne Volcanic Province.
Mount Melbourne seen from the ice-covered Ross Sea. It is part of the Melbourne Volcanic Province.
McMurdo Volcanic Group: Mount Erebus on Ross Island is part of the Erebus Volcanic Province.
Mount Erebus on Ross Island is part of the Erebus Volcanic Province.

Worked examples

Example 1 — a first encounter with McMurdo Volcanic Group

Start with the simplest possible case. Write down what McMurdo Volcanic Group 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 McMurdo Volcanic Group 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 McMurdo Volcanic Group 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 McMurdo Volcanic Group

In research
McMurdo Volcanic Group 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 McMurdo Volcanic Group 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
McMurdo Volcanic Group is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cenozoic volcanoes, Geologic groups of Antarctica, Rift volcanoes, so understanding it makes those chapters shorter.
In everyday life
Look for McMurdo Volcanic Group 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 McMurdo Volcanic Group in 20 minutes

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

Frequently asked questions

What is McMurdo Volcanic Group in simple terms?

The McMurdo Volcanic Group is a large group of Cenozoic volcanic rocks in the western Ross Sea and central Transantarctic Mountains areas of Antarctica. It is one of the largest provinces of alkaline volcanism in the world, having formed as a result of continental rifting along the West Antarctic R…

Why does McMurdo Volcanic Group 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 McMurdo Volcanic Group?

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 McMurdo Volcanic Group.

Tags

  • Cenozoic volcanoes
  • Geologic groups of Antarctica
  • Rift volcanoes
  • Volcanic groups
  • Volcanoes of Victoria Land

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