하와이, 빅 아일랜드의 푸 오오 분출 용암에 대한 암석학적 연구 = Petrology of Puu Oo eruption lavas from the Big island, Hawaii

다국어 초록 (Multilingual Abstract)

The Puu Oo eruption in Hawaii since 1983 is one of the largest eruptions on Hawaii's volcanic history with prominent compositional variation(5.6～10.1wt.% in MgO content). Although intense researches of Hawaiian eruption have been conducted for recent years, there is no up-to-date study on Puu Oo lavas that is erupting hot lavas today. in oder to obtain basic information on the geological characteristics of the eruption including any noticeable change in its petrological trend and magma dynamics, we applied several geological approaches such as field survey, systematic sampling, petrography, mineralogy, and geochemistry. Clinopyroxene and Plagioclase phenocrysts are rarely observed on the thin section, however Olivine crysts are much more obvious in the study area. It indicates that Puu Oo is early stage of magma differentiation. Variation diagram of whole rock composition shows that the elements such as TiO2, Al2O3, SiO2 and Na2O decrease with increasing MgO. In the trace element Sr, Y, Zr and V versus K2O, P18, P19 samples are plotted in primitive area. Variations of the Ni contents during 2003～2006 may suggest a sudden change in magma composition probably caused by new magma injection.

목차 (Table of Contents)

• Ⅰ. 서언 1
• Ⅱ. 지질개요 및 분출사건 요약 3
• Ⅲ. 시료채취 및 연구방법 7
• Ⅳ. 암석기재 12
• Ⅴ. 암석화학 16
• 1. 주원소 분석 16
• 2. 미량원소 및 희토류 분석 21
• 3. 감람석 광물화학 28
• Ⅵ. 토의 33
• 1. 마그마 분화 양상 33
• 2. Ni 함량변화 35
• Ⅶ. 결론 37