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자원환경지질 = Economic and environmental geology, v.47 no.6, 2014년, pp.601 - 610
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Udo is the site of a short-lived monogenetic submarine volcanic vent which builts basaltic clastic deposits below sea level, by early Surtseyan-type explosive eruption and later effusive lava eruptions. Mineral assemblage, major and trace element chemistry indicate that the Someori sub-alkaline lava...
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| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 우도의 형태는 어떻게 완성되었는가? | 제주도 동편의 부속섬인 우도는 일윤회 분출에 의해 형성된 단성화산체로서 해저에서 초기 서쩨이언형(Surtseyan-type)의 폭발성 화산분화에서 시작되고 마지막 용암분출로 섬 전체의 형태가 완성되었다. 섬의 대부분을 차지하는 소머리현무암은 서브알칼리계열로서 미량원소 및 희토류원소의 지화학적 특성은 섭입대에서 생성되는 쏠레이아이트일 가능성보다는 지각판내부에서 생성된 쏠레이아이트임을 지시하며, 이는 마이오세 말기 이후의 한반도의 화산활동은 태평양판과 필리핀해판인 해양판의 섭입 영향을 받지 않는 지구조적 환경으로 변했음을 시사한다. | |
| 우도 소머리현무암은 언제 생성된 것인가? | , 1993)에 기재된 우도의 대부분을 차지하며 분포하는 우도 소머리현무암은 암석기재적 특징과 주구성광물의 화학성분, 주성분원소의 함량 조성 특성(Koh et al., 2005) 연구에 의해 서브알칼리계열의 현무암으로 쏠레이아이트암의 특징을 갖고 있으며 연대측정 자료는 0.114 ± 0.003Ma(Koh et al., 2005)와 86 Ka와 102Ka(Koh et al., 2008)등 플라이스토세의 화산활동에 의해 생성된 화산섬으로 해석하였다. | |
| 우도에 처음 사람들의 거주가 허락된 이유는? | 9 km2이고 해안선 길이가 17 km이며 최고점이 132 m이다. 1697년(숙종 23년) 국유목장이 설치되면서 국마(國馬)를 관리·사육하기 위하여 사람들의 거주가 허락되었으며 1844년(헌종 10년) 김석린 진사 일행이 입도하여 정착하였다. 원래는 구좌읍 연평리에 속하였으나 1986년 4월 1일 우도면으로 승격하였다(Doopedia, 2010). |
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