earth science

Sinuiju Formation

Sinuiju 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 Sinuiju Formation rather than just read about it. In short: The Sinuiju Formation(신의주층) is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous.

Key takeaways

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

Reference excerpt

The Sinuiju Formation(신의주층) is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous. A variety of fossils are known from the formation, including those of anurognathid pterosaurs (possibly Jeholopterus) and birds such as the specimen of a very large enantiornithine with a 5 cm (2.0 in) long tibia and a 3.5 cm (1.4 in) long pygostyle. Frogs have also been found in the formation. Numerous compression fossils of insects have also been found.

Fossil content

Fish

Amphibians

Pterosaurs

Dinosaurs

Birds

Non-avian dinosaurs

Mammals

Insects

Conchostracans

Uncertain

See also List of dinosaur-bearing rock formations List of stratigraphic units with few dinosaur genera

References

Worked examples

Example 1 — a first encounter with Sinuiju Formation

Start with the simplest possible case. Write down what Sinuiju 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 Sinuiju 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 Sinuiju 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 Sinuiju Formation

In research: Sinuiju 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 Sinuiju 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: Sinuiju Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Andesite formations, Aptian Stage, Barremian Stage, so understanding it makes those chapters shorter.
In everyday life: Look for Sinuiju 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Sinuiju Formation” →

Affiliate

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

How to study Sinuiju Formation in 20 minutes

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

Frequently asked questions

What is Sinuiju Formation in simple terms?

The Sinuiju Formation(신의주층) is a geologic formation in North Korea. Formerly of uncertain age, it is now thought to be Early Cretaceous.

Why does Sinuiju 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 Sinuiju 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 Sinuiju Formation.