science

Hoshigatō obsidian mine site

Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site rather than just read about it. In short: The Hoshigatō obsidian mine site (星ヶ塔黒曜石原産地遺跡, Hoshigatō kokuyōseki gensanchi iseki) is a Jōmon period archaeological site consisting 193 shallow interconnected pits over a 35,000 square meter area, from which obsidian had been mined, located in what is now part of the town of Nagawa in the Chūbu region Japan. It has been protected as a National Historic Site since 2015.

Key takeaways

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

Reference excerpt

The Hoshigatō obsidian mine site (星ヶ塔黒曜石原産地遺跡, Hoshigatō kokuyōseki gensanchi iseki) is a Jōmon period archaeological site consisting 193 shallow interconnected pits over a 35,000 square meter area, from which obsidian had been mined, located in what is now part of the town of Nagawa in the Chūbu region Japan. It has been protected as a National Historic Site since 2015.

Overview The Hoshigatō site is located northwest of slope of Mount Kirigamine at an elevation of 1500 meters, within the Higashimata National Forest in the northeastern part of Shimosuwa. Obsidian, or "volcanic glass" was frequently used for stone tools and weapons in the Japanese Paleolithic period as it could be fractured by lithic reduction to produce sharp blades or arrowheads, and frequently occurs in volcanic formation around Japan. Archaeological excavations have found that obsidian was extracted from this location from the early Jōmon period (about 5700 years ago) through the late Jōmon period (2000–1000 BCE). Physicochemical analysis has found that obsidian from this site was supplied to settlements distributed across an extremely wide range from Tōhoku to the Tōkai region, indicating long distance trade. The site was discovered in 1920, and was excavated from 1959-1961, and again in 1997. There are no public facilities at the site and access is controlled by the Shimosuwa Town Board of Education.

See also List of Historic Sites of Japan (Nagano)

References

External links Shimosuwa town official site (in Japanese)

Worked examples

Example 1 — a first encounter with Hoshigatō obsidian mine site

Start with the simplest possible case. Write down what Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site

In research: Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site 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: Hoshigatō obsidian mine site is common in secondary-school and first-year university syllabi. It links to neighbouring topics Historic Sites of Japan, History of Nagano Prefecture, Jōmon period sites, so understanding it makes those chapters shorter.
In everyday life: Look for Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site in 20 minutes

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

Frequently asked questions

What is Hoshigatō obsidian mine site in simple terms?

Why does Hoshigatō obsidian mine site 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 Hoshigatō obsidian mine site?

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 Hoshigatō obsidian mine site.