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NTIS 바로가기자원환경지질 = Economic and environmental geology, v.52 no.5, 2019년, pp.381 - 393
장휘민 (경북대학교 자연과학대학 지질학과) , 손미라 (경북대학교 자연과학대학 지질학과) , 유인창 (경북대학교 자연과학대학 지질학과)
Carbonate breccias occur sporadically in the Middle Cambrian Daegi Formation on the southern limb of the Baegunsan Syncline, Taebaeksan Basin. These carbonate breccias have been largely interpreted either as sedimentary breccias or as tectonic, fault-related breccias. Recent study, however, indicate...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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카르스트의 형성은 무엇을 의미하는가? | 그러나 최근의 연구결과는 이러한 탄산염 각력암들의 대부분이 고기 카르스트의 형성과 성인적으로 연계되어 발달하는 용식 붕락 각력암이라는 것을 지시한다. 카르스트의 형성은 탄산염 대지의 장기간에 걸친 대기 노출에 기인하며 탄산염 대지에 있어서 퇴적작용의 중단을 의미한다. 대기 노출 과정 동안 카르스트의 발달과 연계되어 형성된 이러한 퇴적층들은 층서 기록상 천수에 의한 속성작용, 고토양층 및 용식 붕락 각력암 등으로 인지될 수 있다. | |
탄산염 각력암의 어떻게 분류되는가? | 탄산염 각력암의 조직과 배열상태 등과 같은 기재적 (descriptive) 특징에 기초한 Kerans(1988, 1993)의 분류 법을 인용하여 동점 단면 대기층의 탄산염 각력암을 파 쇄 각력암(fracture breccia), 모자이크 각력암(mosaic breccia) 및 난상 각력암(chaotic breccia)으로 분류하였다. 각 각력암은 서로 수직적으로 연관되어 산출되는 것이 일반적이지만(Kerans, 1988, 1993), 대기층의 각력암들은 수직적으로 연관되어 나타나지 않고 함께 혼재되어 나타나는 것이 특징이다. |
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