earth science

Nam Phong Formation

Nam Phong Formation 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 Nam Phong Formation rather than just read about it. In short: The Nam Phong Formation, which correlates to the Indosinian III Unconformity, is a geological formation in Thailand. It underlies the Khorat Group.

Key takeaways

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

Reference excerpt

The Nam Phong Formation, which correlates to the Indosinian III Unconformity, is a geological formation in Thailand. It underlies the Khorat Group. It consists of resistant, red-brown micaceous sandstones, conglomerates, siltstones and mudstones of mainly fluvial origin. The sandstones are medium to very fine-grained and are usually calcareous. The conglomerates contain pebbles of quartz, brown and grey chert, and reddish brown siltstone. Cross bedding and plane-bed stratification are common in the sandstones and conglomerates. The sandstones and conglomerates make up approximately 30% of the formation. This sedimentary rock formation is found in Khon Kaen Province, Thailand. It is of Norian to Rhaetian age (Upper Triassic) to (Lower Jurassic) age, and is notable for its fossils of early dinosaurs.

Vertebrate paleofauna Indeterminate prosauropod remains are present in Khon Kaen Province.

Correlations The formation has been correlated with the Lower Elliot Formation (Karoo Basin) and Forest Sandstone of Africa, the Caturrita Formation of the Paraná Basin in Brazil, the Laguna Colorada and Los Colorados Formations (Ischigualasto-Villa Unión Basin) of Argentina, the Chinle Formation of North America, the Trössingen Formation of the Keuper Group of Germany, and the Lower Dharmaram Formation of India.

See also List of dinosaur-bearing rock formations

References

Bibliography Novas, Fernando E.; Ezcurra, Martín D.; Chatterjee, Sankar; Kutty, T.S. (2011), "New dinosaur species from the Upper Triassic Upper Maleri and Lower Dharmaram formations of central India", Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 101 (3–4): 333–349, Bibcode:2010EESTR.101..333N, doi:10.1017/S1755691011020093, retrieved 2019-04-06doi:10.1017/S1755691011020093 Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21{{citation}}: CS1 maint: publisher location (link)

Worked examples

Example 1 — a first encounter with Nam Phong Formation

Start with the simplest possible case. Write down what Nam Phong Formation 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 Nam Phong Formation 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 Nam Phong Formation 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 Nam Phong Formation

In research: Nam Phong Formation 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 Nam Phong Formation 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: Nam Phong Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Conglomerate formations, Fluvial deposits, Fossiliferous stratigraphic units of Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Nam Phong Formation 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 Nam Phong Formation in 20 minutes

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

Frequently asked questions

What is Nam Phong Formation in simple terms?

The Nam Phong Formation, which correlates to the Indosinian III Unconformity, is a geological formation in Thailand. It underlies the Khorat Group.

Why does Nam Phong Formation 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 Nam Phong Formation?

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 Nam Phong Formation.