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Mamers Valles

Mamers Valles is a 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 Mamers Valles rather than just read about it. In short: The Mamers Valles are a set of channels in a long, winding canyon in the north of Mars. They cover 1000 km, cutting through the cratered uplands of the Arabia Terra, from the Cerulli crater to the Deuteronilus Mensae near the edge of Mars' vast northern lowlands.

Mamers Valles — main illustration
Mamers Valles — illustration

Key takeaways

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

Reference excerpt

The Mamers Valles are a set of channels in a long, winding canyon in the north of Mars. They cover 1000 km, cutting through the cratered uplands of the Arabia Terra, from the Cerulli crater to the Deuteronilus Mensae near the edge of Mars' vast northern lowlands. Through their midsection, they average a width of 25 km and a depth of 1200 meters. Theories of canyon formation include that Mamers Valles were formed by either water or lava, with the flow from south to north and additional material flowing from the slope toward the valley floor. According to the most popular theory, linear features on the valley bottom indicate possible ice flows and that ice may currently be plentiful. The Mamers Valles are dated to the early Hesperian period, about 3.8 billion years ago. An infeeder canyon at the northwestern edge of the Mamers Valles, near their mouth (seen at the bottom of the photo at lower right), is a box canyon. Such canyons (with rounded headwalls and no obvious overland infeeders) have been widely presumed to have formed by a process of seepage erosion. However, it has been suggested that this side canyon was formed by a catastrophic flood event (Lamb, 2008). The case is supported by comparison with Box Canyon, Idaho, USA, which shows a similar morphology, but also exhibits features such as plunge pools, rock scours on the headwall rim, and a notch on the headwall rim, suggestive of large-volume flow. The Mamers Valles were named in 1976, after the Oscan word for Mars.

Gallery

References

Google Mars linked to Mamers Valles THEMIS THEMIS Lamb, Michael P. et al. (2008) "Formation of Box Canyon, Idaho, by Megaflood: Implications for Seepage Erosion on Earth and Mars", Science 320, 1067

Illustrations

Mamers Valles illustration
Mamers Valles: Glacial-like flow features near the Mamers Valles. Scarps and hills appear twisted like taffy, probably the result of the slow movement of the subsurface ice. Note the patterned ground at top center. These small-scale textures may be the result of sublimation (evaporation) of subsurface ice combined with the taffy-like shifts in the ground surface. Width of image is about a kilometer.
Glacial-like flow features near the Mamers Valles. Scarps and hills appear twisted like taffy, probably the result of the slow movement of the subsurface ice. Note the patterned ground at top center. These small-scale textures may be the result of sublimation (evaporation) of subsurface ice combined with the taffy-like shifts in the ground surface. Width of image is about a kilometer.
Mamers Valles illustration
Mamers Valles illustration
Mamers Valles illustration

Worked examples

Example 1 — a first encounter with Mamers Valles

Start with the simplest possible case. Write down what Mamers Valles claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 Mamers Valles 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 Mamers Valles 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 Mamers Valles

In research
Mamers Valles appears in 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 Mamers Valles 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
Mamers Valles is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ismenius Lacus quadrangle, Mars stubs, Valleys and canyons on Mars, so understanding it makes those chapters shorter.
In everyday life
Look for Mamers Valles 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 Mamers Valles in 20 minutes

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

Frequently asked questions

What is Mamers Valles in simple terms?

The Mamers Valles are a set of channels in a long, winding canyon in the north of Mars. They cover 1000 km, cutting through the cratered uplands of the Arabia Terra, from the Cerulli crater to the Deuteronilus Mensae near the edge of Mars' vast northern lowlands.

Why does Mamers Valles matter?

Because it connects several 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 Mamers Valles?

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 Mamers Valles.

Tags

  • Ismenius Lacus quadrangle
  • Mars stubs
  • Valleys and canyons on Mars

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