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๐Ÿ’ฎ Marado Flowers ๐Ÿ’ฎ EarthCache

Hidden : 9/17/2023
Difficulty:
2 out of 5
Terrain:
1.5 out of 5

Size: Size:   other (other)

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Geocache Description:


๋งˆ๋ผ๋„ ์„ค๋ช…

๋งˆ๋ผ๋„๋Š” ํ•œ๊ตญ์˜ ์‹œ์ž‘์ ์ด์ž ๋์ ์œผ๋กœ ํ•œ๊ตญ์— ์•Œ๋ ค์ ธ ์žˆ์Šต๋‹ˆ๋‹ค. ํฅ๋ฏธ๋กœ์šด ๊ด€๊ด‘ ๋ช…์†Œ๊ฐ€ ์žˆ๋Š” ์กฐ์šฉํ•œ ์ž‘์€ ์„ฌ์ž…๋‹ˆ๋‹ค. ํ•œ๊ตญ ์ตœ๋‚จ๋‹จ์„ ๊ธฐ๋ฆฌ๋Š” ๊ธฐ๋…๋ฌผ, ์ž ์ˆ˜๋ถ€์˜ ์•ˆ์ „์„ ๊ธฐ์›ํ•˜๋Š” ์„ฑ๋‹น, ๋…ํŠนํ•œ ์ž์žฅ๋ฉด์ด ์žˆ์Šต๋‹ˆ๋‹ค. ๋งˆ๋ผ๋„ ๋„๋ณด์—ฌํ–‰์€ ์•ฝ 1์‹œ๊ฐ„ ์ •๋„ ์†Œ์š”๋ฉ๋‹ˆ๋‹ค. ๋•…์ด ํ‰ํ‰ํ•˜๊ณ  ํฌ์žฅ๋˜์–ด ์žˆ์–ด์„œ ๊ฑท๊ธฐ์— ์ข‹์Šต๋‹ˆ๋‹ค. ๋งˆ๋ผ๋„๋Š” ์กฐ์šฉํ•˜์ง€๋งŒ, ์ œ์ฃผ๋„ ์•ž๋ฐ”๋‹ค์—์„œ๋Š” ๋ฐ”๋žŒ์ด ๊ฝค ๋งŽ์ด ๋ถˆ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

๋งˆ๋ผ๋„ ์ง€์งˆ

์ตœ๊ทผ๊นŒ์ง€ ๋งˆ๋ผ๋„๊ฐ€ ์–ผ๋งˆ๋‚˜ ์˜ค๋ž˜ ์ „์— ํ˜•์„ฑ๋˜์—ˆ๋Š”์ง€ ํ™•์ธํ•˜๋Š” ๊ฒƒ์€ ์–ด๋ ค์› ์Šต๋‹ˆ๋‹ค. ๊ณผํ•™์ž๋“ค์ด ์ด์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๊ธฐ์ˆ ์ด 150,000~260,000๋…„ ์ „์˜ ์—„์ฒญ๋‚œ ์ถ”์ • ์ฐฝ์„ ์ œ๊ณตํ–ˆ๊ธฐ ๋•Œ๋ฌธ์ž…๋‹ˆ๋‹ค. ๊ณผํ•™์ž๋“ค์€ ์ด๋Ÿฌํ•œ ๊ฒฐ๋ก ์— ๋„๋‹ฌํ•˜๊ธฐ ์œ„ํ•ด ๋งˆ๋ผ๋„๋ฅผ ํ˜•์„ฑํ•˜๋Š” ํ˜„๋ฌด์•”์˜ ์—ฐ๋Œ€๋ฅผ ์ธก์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ์‚ฌ์šฉํ–ˆ์Šต๋‹ˆ๋‹ค.

๊ทธ๋Ÿฌ๋‚˜ ์ตœ๊ทผ ํŠน์ • ์ข…๋ฅ˜์˜ ์•”์„์˜ ์—ฐ๋Œ€๋ฅผ ์•Œ์•„๋‚ด๋Š” ์ƒˆ๋กœ์šด ๊ธฐ์ˆ ์ด ๊ฐœ๋ฐœ๋˜์—ˆ๋Š”๋ฐ, ๋งˆ๋ผ๋„ ํ˜„๋ฌด์•”์ด ์ด ์ƒˆ๋กœ์šด ๊ธฐ์ˆ ์— ์ ํ•ฉํ–ˆ์Šต๋‹ˆ๋‹ค. ์ด ์ƒˆ๋กœ์šด ๊ธฐ์ˆ ์„ ์šฐ๋ผ๋Š„-ํ† ๋ฅจ-ํ—ฌ๋ฅจ ์—ฐ๋Œ€ ์ธก์ • ๋˜๋Š” (U-Th)/He ์—ฐ๋Œ€ ์ธก์ •์ด๋ผ๊ณ  ํ•ฉ๋‹ˆ๋‹ค. ํ˜„๋ฌด์•” ์ž์ฒด๋ฅผ ๋ถ„์„ํ•˜๋Š” ๋Œ€์‹  ํ˜„๋ฌด์•” ์†์— ์žˆ๋Š” ๊ทœ์•” ๊ฒฐ์ •์—์„œ ์ง€๋ฅด์ฝ˜์„ ๋ถ„๋ฆฌํ•ด ๊ฒฐ์ •์˜ ์—ฐ๋Œ€๋ฅผ ์•Œ์•„๋ƒ…๋‹ˆ๋‹ค.

๋งˆ๋ผ๋„์—๋Š” ๋…ํŠนํ•˜๊ณ  ํฌ๊ท€ํ•œ ํ˜„๋ฌด์•”๋„ ์žˆ์Šต๋‹ˆ๋‹ค. ๋งˆ๋ผ๋„ ํ˜„๋ฌด์•”์˜ ๋Œ€๋ถ€๋ถ„์€ ๊ฝƒ๋Œ(๊ตญํ™”๋Œ ๋˜๋Š” ๋ˆˆ์†ก์ด๋Œ์ด๋ผ๊ณ ๋„ ํ•จ)์ด๋ผ๊ณ  ๋ถˆ๋ฆฌ๋Š” ์ผ์ข…์˜ ํ˜„๋ฌด์•”์ž…๋‹ˆ๋‹ค. ๋งˆ๋ผ๋„์˜ ํ˜„๋ฌด์•”์€ ์ค‘์•™์— ๊ฒ€์€ ํœ˜์„ ๊ฒฐ์ •์ด ๋šœ๋ ทํ•œ ๊ฝƒ ๋ชจ์–‘์œผ๋กœ ์ž๋ผ๋Š” ์ž‘์€ ํฐ์ƒ‰ ์žฅ์„ ๊ฒฐ์ •์„ ๊ฐ€์ง€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋Ÿฌํ•œ ์œ ํ˜•์˜ ๊ฒฐ์ •์€ ์„ธ๊ณ„์˜ ๋ช‡๋ช‡ ์žฅ์†Œ์—์„œ๋งŒ ์ž๋ผ๋ฉฐ ํ™”์‚ฐ ํญ๋ฐœ ์งํ›„์— ํ˜•์„ฑ๋˜๋Š” ๊ฒƒ์œผ๋กœ ์ƒ๊ฐ๋ฉ๋‹ˆ๋‹ค.

์–ด์Šค์บ์‹œ ๋กœ๊ทธํ•˜๋Š” ๋ฐฉ๋ฒ•

1. ๊ณผํ•™์ž๋“ค์€ ๋งˆ๋ผ๋„๊ฐ€ ์–ธ์ œ ํ˜•์„ฑ๋˜์—ˆ๋Š”์ง€ ์–ด๋–ป๊ฒŒ ํŒ๋‹จํ–ˆ์Šต๋‹ˆ๊นŒ?

2. ๋งˆ๋ผ๋„์˜ ํ˜„๋ฌด์•”์€ ์ œ์ฃผ๋„์˜ ํ˜„๋ฌด์•”๊ณผ ์–ด๋–ป๊ฒŒ ๋‹ค๋ฆ…๋‹ˆ๊นŒ?

3. ์บ์‹œ ์ขŒํ‘œ์—์„œ ์ฐพ์€ ๊ฝƒ ๊ฒฐ์ •์— ๋Œ€ํ•ด ์„ค๋ช…ํ•ด๋ณด์„ธ์š”. ์˜ˆ: ํฌ๊ธฐ, ๋ชจ์–‘, ์ƒ‰์ƒ ๋“ฑ

4. ์–ด์Šค์บ์‹œ ์ขŒํ‘œ์—์„œ GPS์™€ (์•„๋‹ˆ๋ฉด ๊ธฐํƒ€ ์ง€์˜ค์บ์‹ฑ ์•„์ดํ…œ) ์‚ฌ์ง„์„ ์ฐ๊ณ  ๋กœ๊ทธ์™€ ๋™์‹œ์— ์—…๋กœ๋“œํ•˜์„ธ์š”. (์‚ฌ์ง„ ์—†์œผ๋ฉด ๋กœ๊ทธ๋ฅผ ์‚ญ์ œํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค)

5. ๋‹ต์„ ์ œ Profile์— ์žˆ๋Š” ๋ฉ”์‹œ์ง€์ฐฝ์„ ์ด์šฉํ•ด ์ œ๊ฒŒ ๋ณด๋‚ด์ฃผ์„ธ์š”. ์ด์ œ ๋กœ๊ทธํ•˜์…”๋„ ๋ฉ๋‹ˆ๋‹ค. ๋‹ต์— ๋ฌธ์ œ๊ฐ€ ์žˆ์„ ๊ฒฝ์šฐ ์ œ๊ฐ€ ๋ฉ”์‹œ์ง€๋ฅผ ๋“œ๋ฆฌ๊ฒ ์Šต๋‹ˆ๋‹ค

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Marado Introduction

Marado is known in Korea as the starting point and the ending point of Korea. It's a quiet little island with some interesting tourist attractions. It hosts a monument that is dedicated to the southernmost point of Korea, a cathedral that prays for the safety of divers, and some unique jajangmyun. It only takes about an hour to walk the loop around the island. The ground is flat and paved and easy to walk around. It is quiet on Marado, but it can also get quite windy this far off the coast of Jeju Island.

Marado Geology

It was difficult until recently to determine the age of Marado and when it was formed. This was because the techniques available to scientists provided a huge estimate window from 150,000-260,000 years ago. They used a method of trying to date the basalt that forms Marado to come to this conclusion.

However a new technique was recently developed to find the age of certain kinds of rocks and the Marado basalt was an excellent candidate for this new technique. This new technique is called Uranium-thorium-helium dating or (U-Th)/He dating. Instead of anylazing the basalt itself, zircon is separated from quartzite crystals in the basalt and the age of the crystals is determined.

Marado also has some uniquely rare basalt. Much of the basalt on Marado is a type of basalt called flowerstone (also Chrysanthemum Stone or Snowflake Stone). The basalt on Marado has small white feldspar crystals with a black pyroxene crystals at the center that grow in a distinctly flower shape. These type of crystals only grow in a few places in the world and are thought to form shortly after volcanic eruption.

How to log this Earthcache

1. How did scientists determine the age of Marado?

2. How is the basalt on Marado different from the basalt on Jeju Island?

3. Describe the flower crystals that you find at the cache zone. ex: size, shape, color, etc.

4. Take a picture of your GPS (or a different geocaching related item) at the cache zone and upload it with your log. (A photograph is required)

5. Please send the answers to me by message on my profile. You may log this cache as โ€œFound.โ€ (If the answers are not correct I will contact you.)

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Additional Hints (No hints available.)