science

Šilalė Event

Šilalė Event is a 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 Šilalė Event rather than just read about it. In short: The Šilalė Event was an extinction event affecting conodonts during the Přídolí, the final stage of the Silurian period. Timing The Šilalė Event, first identified in the Milaičiai-103 core in southwestern Lithuania, is marked by a negative carbon isotope excursion in carbonate rocks known as the Šilalė Negative Carbon Isotope Event.

Key takeaways

Šilalė Event belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Šilalė Event to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Šilalė Event from memory before moving on to harder problems.

Reference excerpt

The Šilalė Event was an extinction event affecting conodonts during the Přídolí, the final stage of the Silurian period.

Timing The Šilalė Event, first identified in the Milaičiai-103 core in southwestern Lithuania, is marked by a negative carbon isotope excursion in carbonate rocks known as the Šilalė Negative Carbon Isotope Event. This isotopic excursion is also known from the Jočionys-299 borehole in eastern Lithuania, as well as in coeval deposits in the Appalachian Basin of North America and has also been termed the Šilalė Low. The amplitudes of the ~405 Ka long eccentricity cycle were at their lowest point of the entire Přídolí during the Šilalė Event. The end of the Šilalė Event corresponds to the beginning of the Delotaxis detorta conodont biozone, a conodont biozone once erroneously thought to have corresponded to the latest Přídolí.

Effects The Šilalė Event resulted in a decline in conodont diversity and a corresponding increase not just in the diversity of brachiopods but in their absolute abundance as well. After the event, conodont abundance surged during the interval of biotic recovery from the Šilalė mass rarity.

See also Dasberg Event – Minor extinction event in the Devonian period Hangenberg Event – Mass extinction at the end of the DevonianPages displaying short descriptions of redirect targets Ireviken Event – First of three relatively minor extinction events during the Silurian period Kellwasser Event – Second of the big five mass extinctionsPages displaying short descriptions of redirect targets Lau Event – Relatively minor mass extinction during the Silurian period Lundgreni Event – Extinction event during the middle Homerian age of the Silurian period Mulde Event – Anoxic event causing mass extinctions during the Silurian period

References

Worked examples

Example 1 — a first encounter with Šilalė Event

Start with the simplest possible case. Write down what Šilalė Event claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 Šilalė Event 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 Šilalė Event 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 Šilalė Event

In research: Šilalė Event appears in 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 Šilalė Event 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: Šilalė Event is common in secondary-school and first-year university syllabi. It links to neighbouring topics Extinction events, Silurian, so understanding it makes those chapters shorter.
In everyday life: Look for Šilalė Event 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 Šilalė Event in 20 minutes

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

Frequently asked questions

What is Šilalė Event in simple terms?

The Šilalė Event was an extinction event affecting conodonts during the Přídolí, the final stage of the Silurian period. Timing The Šilalė Event, first identified in the Milaičiai-103 core in southwestern Lithuania, is marked by a negative carbon isotope excursion in carbonate rocks known as the Ši…

Why does Šilalė Event matter?

Because it connects several 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 Šilalė Event?

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 Šilalė Event.