earth science

Lameta Formation

Lameta 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 Lameta Formation rather than just read about it. In short: The Lameta Formation, also known as the Infratrappean Beds (not to be confused with the contemporaneous Intertrappean Beds), is a sedimentary geological formation found in Madhya Pradesh, Gujarat, Maharashtra, Telangana, and Andhra Pradesh, India, associated with the Deccan Traps. It is of the Maastrichtian age (Late Cretaceous), and is notable for its dinosaur fossils.

Key takeaways

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

Reference excerpt

The Lameta Formation, also known as the Infratrappean Beds (not to be confused with the contemporaneous Intertrappean Beds), is a sedimentary geological formation found in Madhya Pradesh, Gujarat, Maharashtra, Telangana, and Andhra Pradesh, India, associated with the Deccan Traps. It is of the Maastrichtian age (Late Cretaceous), and is notable for its dinosaur fossils.

History The first fossils found in the Lameta Formation were discovered between 1917 and 1919. The Lameta Formation was first identified in 1981 by geologists working for the Geological Survey of India (GSI), G. N. Dwivedi and Dhananjay Mahendrakumar Mohabey, after being given limestone structures–later recognised as dinosaur eggs–by workers of the ACC Cement Quarry in the village of Rahioli near the city Balasinor in the Gujarat state of western India.

Lithology

The formation is underlain by the Lower Cretaceous sedimentary "Upper Gondwana Sequence" also known as the Jabalpur Formation, and is overlain by the Deccan Traps basalt. The Lameta Formation is only exposed at the surface as small isolated outcrops associated with the Satpura Fault. The lithology of the formation, depending on the outcrop, consists of alternating clay, siltstone and sandstone facies, deposited in fluvial and lacustrine conditions. The environment at the time of deposition has alternatively been considered semi-arid, or tropical humid.

Fossil content Many dubious names have been created for isolated bones, but several genera of dinosaurs from these rocks are well-supported, including the titanosaur sauropods Isisaurus and Jainosaurus and the Abelisaurs Indosaurus, Indosuchus, and Rajasaurus and the Noasaurids Laevisuchus and ‘’Jubbulpuria’’. Synapsids are also known form the formation, such as the possibly late surviving Avashishta, possibly the last known non- mammalian synapsid the possibly youngest known stegosaurian ichnogenus Deltapodus, madtsoiid snakes and other fossils.

Dinosaurs

Ornithischians

Sauropods

Theropods

Abelisaurs

Noasaurids

Other Theropods

Indeterminate or chimaeric taxa

Reptiles

Snakes

Crocodylomorphs

Turtles

Mammals

Fishes

Mollusca

See also List of dinosaur-bearing rock formations Geology of India Deccan Traps Maevarano Formation, contemporaneous fossiliferous formation of Madagascar Intertrappean Beds contemporaneous formation in India, also known for its fossils

References

Bibliography Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21{{citation}}: CS1 maint: publisher location (link)

Illustrations

Worked examples

Example 1 — a first encounter with Lameta Formation

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

In research: Lameta 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 Lameta 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: Lameta Formation is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cretaceous India, Deltaic deposits, Fluvial deposits, so understanding it makes those chapters shorter.
In everyday life: Look for Lameta 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 Lameta Formation in 20 minutes

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

Frequently asked questions

What is Lameta Formation in simple terms?

Why does Lameta 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 Lameta 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 Lameta Formation.