earth science

Quiricó Formation

Quiricó 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 Quiricó Formation rather than just read about it. In short: The Quiricó Formation is a geological formation of the Areado Group in Minas Gerais, Brazil whose strata date back to the Early Cretaceous (Aptian). Many occurrences of fossils are reported in the lacustrine deposits of the Quiricó Formation.

Key takeaways

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

Reference excerpt

The Quiricó Formation is a geological formation of the Areado Group in Minas Gerais, Brazil whose strata date back to the Early Cretaceous (Aptian). Many occurrences of fossils are reported in the lacustrine deposits of the Quiricó Formation.

Fossil content

Dinosaurs

Sauropods

Theropoda

Pterosaurs

Crocodylomorphs

Squamates

Crustaceans

Fish

References

Bibliography Celerino de Carvalho, Joyce; Santucci, Rodrigo Miloni (2024), "A new fossil Squamata from the Quiricó Formation (Lower Cretaceous), Sanfranciscana Basin, Minas Gerais, Brazil", Cretaceous Research, 154 105717, Bibcode:2024CrRes.15405717C, doi:10.1016/j.cretres.2023.105717 Souza Bittencourt, Jonathas; Rodrigues Simões, Tiago; Caldwell, Michael Wayne; Cardoso Langer, Max (2020), "Discovery of the oldest South American fossil lizard illustrates the cosmopolitanism of early South American squamates", Communications Biology, 3 (1) 201, doi:10.1038/s42003-020-0926-0, PMC 7190622, PMID 32350412{{citation}}: CS1 maint: unflagged free DOI (link) Zaher, H.; Pol, D.; Carvalho, A.B.; Nascimento, P.M.; Riccomini, C.; Larson, P.; Juarez Valieri, R.; Pires-Domingues, R.; da Silva, N.J. and Campos, D.A. (2011), "A Complete Skull of an Early Cretaceous Sauropod and the Evolution of Advanced Titanosaurians", PLoS ONE, 6 (2) e16663, Bibcode:2011PLoSO...616663Z, doi:10.1371/journal.pone.0016663, PMC 3034730, PMID 21326881{{citation}}: CS1 maint: multiple names: authors list (link) Bibcode:2011PLoSO...616663Z Sgarbi, G.N.C (2000), "The Cretaceous Sanfranciscan Basin, Eastern Plateau of Brazil", Revista Brasileira de Geociências, 30 (3): 450–452, doi:10.25249/0375-7536.2000303450452 (inactive 4 July 2025){{citation}}: CS1 maint: DOI inactive as of July 2025 (link) Santos, R.S (1985), "Laeliichthys ancestralis, novo gênero e espécie de Osteoglossiformes do Aptiano da Formação Areado, Estado de Minas Gerais, Brasil", Colet. Trab. Paleontol. Ser. Geol., 27: 161–167 Santos, R.S (1955), "Descrição dos peixes fósseis", Bol. Min. Agr. Div. Geol. Mineral., Rio de Janeiro, 155: 1–211 Zaher, H (2020), "An Early Cretaceous theropod dinosaur from Brazil sheds light on the cranial evolution of the Abelisauridae", Comptes Rendus Palevol, 19 (6): 101–115, doi:10.5852/cr-palevol2020v19a6, hdl:11336/153682 Carvalho, Joyce Celerino de; Santucci, Rodrigo Miloni (2018), "New dinosaur remains from the Quiricó Formation, Sanfranciscana Basin (Lower Cretaceous), Southwestern Brazil", Cretaceous Research, 85: 20–27, Bibcode:2018CrRes..85...20D, doi:10.1016/j.cretres.2017.12.017

Illustrations

Worked examples

Example 1 — a first encounter with Quiricó Formation

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

In research: Quiricó 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 Quiricó 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: Quiricó Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aptian Stage, Cretaceous Brazil, Fossiliferous stratigraphic units of South America, so understanding it makes those chapters shorter.
In everyday life: Look for Quiricó 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 Quiricó Formation in 20 minutes

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

Frequently asked questions

What is Quiricó Formation in simple terms?

Why does Quiricó 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 Quiricó 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 Quiricó Formation.