earth science

Talampaya Formation

Talampaya 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 Talampaya Formation rather than just read about it. In short: The Talampaya Formation is an Early Triassic (Olenekian) geologic formation in the Ischigualasto-Villa Unión Basin of La Rioja Province in northwestern Argentina. The pink to red sandstones of the formation represent the oldest sedimentary unit in the basin, overlying basement rock and were deposited in a high-energy braided river environment.

Key takeaways

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

Reference excerpt

The Talampaya Formation is an Early Triassic (Olenekian) geologic formation in the Ischigualasto-Villa Unión Basin of La Rioja Province in northwestern Argentina. The pink to red sandstones of the formation represent the oldest sedimentary unit in the basin, overlying basement rock and were deposited in a high-energy braided river environment. Ichnofossils, probably left by an archosaur chirotherian, were found in the formation. The formation crops out in the Talampaya National Park, which was designated a UNESCO World Heritage Site in 2000.

Description The formation was first defined by Romer and Jensen in 1966, based on a type section exposed in the Talampaya River canyon. The Talampaya Formation belongs to the Paganzo Group. The formation represents the oldest sedimentary unit in the Ischigualasto-Villa Unión Basin in the Talampaya National Park of La Rioja Province, overlying Paleozoic basement, formed by the Tuminico Formation. The Talampaya Formation is overlain by the arid fluvial sandstones and conglomerates of the Tarjados Formation, eroding the Talampaya Formation. The formation, reaching a maximum thickness of 400 metres (1,300 ft) with a general thickness of approximately 260 metres (850 ft), comprises pink to reddish sandstones, deposited in a fluvial environment, dominated by high-energy braided rivers producing sheet floods. The sediments were deposited under uniform climatic conditions with temperate to warm temperatures and high humidity. Other facies recognized in the formation are alluvial fan deposits with thin tuffaceous beds and conglomerates, covered by a section of basaltis and other volcanic agglomerates and eolian sandstones. Tetrapod ichnofossils, probably belonging to a chirotherian (and possibly an archosaur), were discovered in the formation southeast of Pagancillo by Argentina paleontologist José Bonaparte in 1964.

See also Sanga do Cabral Formation, contemporaneous fossiliferous formation of the Paraná Basin in southeastern Brazil Katberg Formation, contemporaneous fossiliferous formation of the Karoo Basin in South Africa Fremouw Formation, contemporaneous fossiliferous formation of Antarctica

References

Bibliography Aceituno Cieri, P.; Zeballos, M.E.; Rocca, R.J.; Martino, R.D.; Carignano, C.; Guereschi, A.; Giambastiani, M. (2015), "Condicionantes geológicos en el cruce de la sierra de Valle Fértil. San Juan - Geological constraints at the crossing of sierra Valle Fertil. San Juan", Revista de Geología Aplicada a la Ingeniería y al Ambiente, 35: 57–69 Balabusic, Ana M. (2001), Plan de Manejo del Parque Nacional Talampaya (PDF), Administración de Parques Nacionales, pp. 1–68, retrieved 2019-03-28 Caselli, Alberto Tomás (1998), Estratigrafía y sedimentología de las formaciones Patquía (Pérmico) y Talampaya (Triásico Inferior), en las Sierras Pampeanas Noroccidentales y Precordillera Central (Provincias de La Rioja y San Juan) (PhD thesis) (PDF), Universidad de Buenos Aires, pp. 1–437, retrieved 2019-03-28 Leonardi, Giuseppe (1994), Annotated Atlas of South America Tetrapod Footprints (Devonian to Holocene) with an appendix on Mexico and Central America, Ministerio de Minas e Energia - Companhia de Pesquisa de Recursos Minerais, Geological Service of Brazil, pp. 1–248, retrieved 2019-03-28 Monetta, A.; Baraldo, J.; Cardinali, A.; Weidmann, R.; Lanzilotti, M. (2000), Distribución y características del magmatismo intratriasico de Ischigualasto, San Juan, Argentina (PDF), IX Congreso Geológico Chileno, pp. 644–648, archived from the original (PDF) on 2019-03-28, retrieved 2019-03-28

Illustrations

Worked examples

Example 1 — a first encounter with Talampaya Formation

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

In research: Talampaya 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 Talampaya 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: Talampaya Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aeolian deposits, Alluvial deposits, Conglomerate formations of Argentina, so understanding it makes those chapters shorter.
In everyday life: Look for Talampaya 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 Talampaya Formation in 20 minutes

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

Frequently asked questions

What is Talampaya Formation in simple terms?

Why does Talampaya 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 Talampaya 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 Talampaya Formation.