earth science

Pastos Bons Formation

Pastos Bons 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 Pastos Bons Formation rather than just read about it. In short: The Pastos Bons Formation is a Late Jurassic (Oxfordian to Kimmeridgian) geologic formation of the Parnaíba Basin in Maranhão, northeastern Brazil. The formation forms part of the sag phase of the basin.

Key takeaways

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

Reference excerpt

The Pastos Bons Formation is a Late Jurassic (Oxfordian to Kimmeridgian) geologic formation of the Parnaíba Basin in Maranhão, northeastern Brazil. The formation forms part of the sag phase of the basin. It overlies the Sardinha Formation and is overlain by the Mosquito Formation. The fluvial to lacustrine sandstones and shales have provided fossils of a coelacanth fish, Parnaibaia maranhaoensis and a paralligatorid named after the formation, Batrachomimus pastosbonensis.

Fossil content The following fossils were reported from the formation:

Crocodylomorphs

Fish

Plants

See also Takutu Formation, contemporaneous formation of northern Brazil and Guyana

References

Bibliography De Castro, David Lopes; Bezerra, Francisco Hilário; Fuck, Reinhardt Adolfo; Vidotti, Roberta Mary (2016), "Geophysical evidence of pre-sag rifting and post-rifting fault reactivation in the Parnaíba basin, Brazil", Solid Earth, 7 (2): 529–548, Bibcode:2016SolE....7..529L, doi:10.5194/se-7-529-2016, retrieved 2020-07-07 Montefeltro, F.C.; Larsson, H. C. E.; França, M. A. G.; Langer, M. C. (2013), "A new neosuchian with Asian affinities from the Jurassic of northeastern Brazil", Naturwissenschaften, 100 (9): 835–841, Bibcode:2013NW....100..835M, doi:10.1007/s00114-013-1083-9, PMID 23893176, retrieved 2020-07-07 Yabumoto, Y (2007), "A New Mesozoic coelacanth from Brazil (Sarcopterygii, Actinistia)", Paleontological Research, 12 (4): 329–343, doi:10.2517/prpsj.12.329

Illustrations

Worked examples

Example 1 — a first encounter with Pastos Bons Formation

Start with the simplest possible case. Write down what Pastos Bons 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 Pastos Bons 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 Pastos Bons 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 Pastos Bons Formation

In research: Pastos Bons 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 Pastos Bons 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: Pastos Bons Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fluvial deposits, Geography of Maranhão, Geologic formations of Brazil, so understanding it makes those chapters shorter.
In everyday life: Look for Pastos Bons 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 Pastos Bons Formation in 20 minutes

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

Frequently asked questions

What is Pastos Bons Formation in simple terms?

Why does Pastos Bons 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 Pastos Bons 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 Pastos Bons Formation.