earth science

Raigón Formation

Raigón 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 Raigón Formation rather than just read about it. In short: The Raigón Formation is a geologic formation in Uruguay dated between the Pliocene and Middle Pleistocene. Overview In 1966, Uruguayan geologists Héctor Goso and Jorge Bossi defined the Raigón Formation, which they subdivided into the San José Member (the same as Francis and Mones' San José Formation) below and the San Bautista Member above.

Key takeaways

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

Reference excerpt

The Raigón Formation is a geologic formation in Uruguay dated between the Pliocene and Middle Pleistocene.

Overview In 1966, Uruguayan geologists Héctor Goso and Jorge Bossi defined the Raigón Formation, which they subdivided into the San José Member (the same as Francis and Mones' San José Formation) below and the San Bautista Member above. In 1988, Álvaro Mones identified Lower Pleistocene levels in the San José Member. In 2002, American geologist H. McDonald and Uruguayan paleontologist Daniel Perea suggested the formation may represent a wide timespan from the Montehermosan all the way to the Ensenadan. A notable finding was J. monesi, recovered in situ from a boulder originating in the San José Member. The boulder is made up of siltstone, claystone, and medium-grained and medium-to-conglomeratic psammite (a type of sandstone) intercalated with siltstone.

Fossil content The following fossils have been reported from the formation:

Charruatoxodon Desmodus draculae Trigodon sp. Catonyx tarijensis Pronothrotherium figueirasi Glyptodon Plaxhaplous Giganhinga Josephoartigasia monesi Pronothrotherium Uruguayurus Cardiatherium talicei Uruguayodon Platygonus sp. Phorusrhacinae (possibly Devincenzia) Homotherini - previously assigned to cf. Xenosmilus sp., but its generic attribution is uncertain.

See also List of fossiliferous stratigraphic units in Uruguay

References

Worked examples

Example 1 — a first encounter with Raigón Formation

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

In research: Raigón 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 Raigón 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: Raigón Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fossiliferous stratigraphic units of South America, Geologic formations of Uruguay, Huayquerian, so understanding it makes those chapters shorter.
In everyday life: Look for Raigón 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 “Raigón Formation” →

Affiliate

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

How to study Raigón Formation in 20 minutes

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

Frequently asked questions

What is Raigón Formation in simple terms?

The Raigón Formation is a geologic formation in Uruguay dated between the Pliocene and Middle Pleistocene. Overview In 1966, Uruguayan geologists Héctor Goso and Jorge Bossi defined the Raigón Formation, which they subdivided into the San José Member (the same as Francis and Mones' San José Formati…

Why does Raigón 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 Raigón 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 Raigón Formation.