제주도 암괴상 아아용암류의 분포 및 암질에 관한 연구 = Distributions and Lithology of the Aa Rubble Flows on Cheju Island, Korea

다국어 초록 (Multilingual Abstract)

Aa rubble flows, so called "Gotchawal" in Cheju Island, shows the characteristics of debris flow in aa lava flows and these rubble flows has been named as Gotchawal Lava Flow in this study. Gotchawal Lava Flows are distributed only in the eastern and western area of the island, whereas they do not occur in the southern and northern area of the central island where the slope is steep. Gothawal in Cheju Island can be classified as Hangyeong-Andeo, Aeweoul, Jocheon-Hamdeog and Kuchaw-Sungsan Gotchawal Terrains. Hangyeong-Andeo Gotchawal Terrain contains two Gotchawal Lava Flows, Aeweoul Gotchawal Terrain contains one Gotchawal Lava Flow, Jocheon-Hamdeog Gotchawal Terrain contains three Gotchawal Lava Flows and Kuchaw-Sungsan Gotchawal Terrain contains four Gotchawal Lava Flows consisting of total 10 flows.
In the western area, the Wueollim-Shinpyeong Gotchawal Lava Flow in the Hangyeong-Andeog Terrain begins from the vicinity of Dolorem and is branched off at Weolneongri and Yongrangri with distance 12.5 ㎞, which is longest of the Gotchawal Lava Flows in Cheju Island. The Sangchang-Hwasoon Gotchawal Lava Flow in the Hangyeong-Andeog Terrain reaches to 9 ㎞ with the average width of 1.5 ㎞ from Byungag. Also, one of Nabeub-Wueondong Gotchawal Lava Flows in the Aeweoul Terrain is 9 ㎞ from Chenorem. Its width becomes narrow at the steep slope area of Chenorem, whereas it has the tendency to get wide around the gentle slope area.
In the eastern area, Jocheon-Daeheul Gotchawal Lava Flow in Jocheon-Hamdeog Terrain begins from the vicinity of Minorem. It´s total flow distance extends 11㎞.
Hamdeog-Wasan Gotchawal Lava Flow of Jocheon-Hamdeog Terrain is 12.5 ㎞, Sunheul Gotchawal Lava Flow is 7 ㎞. And Jongdal-Handong Gotchawal Lava Flow of Kuchaw-Sungsan Terrain is 11 ㎞, Sehwa Gotchawal Lava Flow is 4.7 ㎞, Susan Gotchawal Lava Flow is 5.5 ㎞ and Sangdo-Hado Gotchawal Lava Flow is 5.6 ㎞.
Based on the study of the lithology and internal textures of Gotchawal Lava Flows, the sizes of rubbles, in general, get not only smaller but abundance of the fine materials gets increased as the distance is longer from the beginning point of the Gotchawal Lava Flow toward the coastal line. However, the Gotchawal Lava Flow can be divided into two types according to the thickness difference of clinker layer: One type thickens (Sangchang-Hwasoon Gotchawal Lava Flow, Jocheon-Daeheul Gotchawal Lava Flow, Hamdeog-Wasan Gotchawal Lava Flow and Sangdo-Hado Gotchawal Lava Flow) and the other thins (Wueollim-Shinpyeong Gotchawal Lava Flow, Nabeub-Wueondong Gotchawal Lava Flow, Sunheul Gotchawal Lava Flow, Jongdal-Handong Gotchawal Lava Flow, Sehwa Gotchawal Lava Flow and Susan Gotchawal Lava Flow) toward the coastal line.
The major elements of Gotchawal Lava Flows indicate that Sangchang-Hwasoon Gotchawal Lava Flow are trachybasalt, whereas Nabeub-Wueondong Gotchawal Lava Flow, Jongdal-Handong Gotchawal Lava Flow and Sangdo-Hado Gotchawal Lava Flow are basaltic trachyandesite, and Wueollim-Shinpyeong Gotchawal Lava Flow, Jocheon-Daeheul Gotchawal Lava Flow, Hamdeog-Wasan Gotchawal Lava Flow, Sunheul Gotchawal Lava Flow, Sehwa Gotchawal Lava Flow and Susan Gotchawal Lava Flow are basalt. The types of these flows can be divided into slabby-clinkery and clinkery-blocky texture. The fine, unconsolidated materials (> 2mm) within Gotchawal Lava Flows may be formed by the milling owing to the movement of lava slabs similar to millstone effect during the Gotchawal Lava Flows.

목차 (Table of Contents)

• 목차
• List of figures
• List of tables
• 제1장 서론 = 1
• 1-1. 연구배경 및 목적 = 1
• 1-2. 연구사 = 2
• 1-3. 연구방법 = 4
• 제2장 제주도 화산층서 개요 = 6
• 2-1. 기반암 = 6
• 2-2. 제Ⅰ단계 화산활동의 화산암 = 11
• 2-3. 제Ⅱ단계 쇄설성 퇴적층 = 11
• 2-3-1. U층 = 11
• 2-3-2. 서귀포층 = 12
• 2-4. 제Ⅲ단계 화산활동의 화산암 = 12
• 2-4-1. 중문조면현무암군 = 13
• 2-4-2. 표선리현무암군 = 13
• 2-4-3. 한라산조면현무암군 = 14
• 2-4-4. 백록담조면암군 = 14
• 제3장 곶자왈 용암류의 분포와 암질 = 15
• 3-1. 제주도 현무암질 용암류의 2대 구분 = 15
• 3-1-1. 파호이호이 용암류 = 15
• 3-1-2. 아아 용암류 = 16
• 3-2. 곶자왈용암류의 분포상태 = 18
• 3-2-1. 한경-안덕 곶자왈지대 = 21
• 3-2-2. 애월 곶자왈지대 = 21
• 3-2-3. 조천-함덕 곶자왈지대 = 23
• 3-2-4. 구좌-성산 곶자왈지대 = 26
• 3-3. 곶자왈용암류의 층서위치 = 28
• 3-3-1. 한경-안덕 곶자왈지대 = 28
• 3-3-2. 애월 곶자왈지대 = 29
• 3-3-3. 조천-함덕 곶자왈지대 = 30
• 3-3-4. 구좌-성산 곶자왈지대 = 31
• 3-4. 곶자왈용암류의 암질 = 32
• 3-4-1. 한경-안덕 곶자왈지대 = 32
• 3-4-1-1. 월림-신평 곶자왈용암류 = 32
• 3-4-1-2. 상창-화순 곶자왈용암류 = 39
• 3-4-2. 애월 곶자왈지대 = 42
• 3-4-2-1. 납읍-원동 곶자왈용암류 = 42
• 3-4-3. 조천-함덕 곶자왈지대 = 47
• 3-4-3-1. 조천-대흘 곶자왈용암류 = 47
• 3-4-3-2. 함덕-와산 곶자왈용암류 = 50
• 3-4-3-3. 선흘 곶자왈용암류 = 54
• 3-4-4. 구좌-성산 곶자왈지대 = 57
• 3-4-4-1. 종달-한동 곶자왈용암류 = 57
• 3-4-4-2. 세화 곶자왈용암류 = 60
• 3-4-4-3. 수산 곶자왈용암류 = 63
• 3-4-4-4. 상도-하도 곶자왈용암류 = 66
• 3-5. 곶자왈용암류의 구성 암석 = 70
• 3-6. 곶자왈용암류 조직의 유형과 분포 = 79
• 3-6-1. 곶자왈용암류의 조직의 분류 = 79
• 3-6-2. 곶자왈용암퓨의 조직의 분포 = 82
• 3-6-2-1. 한경-안덕 곶자왈지대 = 82
• 3-6-2-2. 애월 곶자왈지대 = 86
• 3-6-2-3. 조천-함덕 곶자왈지대 = 86
• 3-6-2-4. 구좌-성산 곶자왈지대 = 91
• 3-7. 곶자왈용암류의 성인에 관한 고찰 = 99
• 제4장 결론 = 107
• 참고문헌 = 109
• Abstract = 116
• 감사의 글