초록 ▼

□ 연차 목표
○ 한반도 중서부 층서·지구조 규명
- 태안-서산-당진, 강화-인천 지역 핵심 지질요소 추출
- 대륙충돌 이후 중생대 지각 변형사
○ 1/100만 한국지질도 제작(개정 3판)
- 남북한 지형보정, 기존 수치지질도 및 신규 지질정보 입력
- 북한지역을 포함한 최신 지질정보자료 수집
○ 지질기반 통합정보시스템 구축
- 지질주제도 아카이브 구축 및 DB, 지질정보 표준화
- 시스템 구축: 수집체계 설계, 관리체계 개발, 활용체계 고도화
□ 개발내용 및 결과
○ 태안

□ 연차 목표
○ 한반도 중서부 층서·지구조 규명
- 태안-서산-당진, 강화-인천 지역 핵심 지질요소 추출
- 대륙충돌 이후 중생대 지각 변형사
○ 1/100만 한국지질도 제작(개정 3판)
- 남북한 지형보정, 기존 수치지질도 및 신규 지질정보 입력
- 북한지역을 포함한 최신 지질정보자료 수집
○ 지질기반 통합정보시스템 구축
- 지질주제도 아카이브 구축 및 DB, 지질정보 표준화
- 시스템 구축: 수집체계 설계, 관리체계 개발, 활용체계 고도화
□ 개발내용 및 결과
○ 태안-서산-당진지역의 1.7 Ga, 823∼817 Ma 신규 화강암체, 강화-인천지역의 신원생대 퇴적층(980 Ma 이후)과 약 1250 Ma 중원생대 관입암류의 존재를 최초로 확인
○ 대륙충돌 이후, 남포층군의 퇴적/변형작용 시기를 확립하고, 백악기 부안화산암의 화산구조와 대륙호 환경의 형성조건을 밝힘
○ 1/100만 한국지질도 작성을 위하여 최근 10년간 발표된 중생대 SHRIMP 연대측정자료와 북한자료를 종합 GIS DB함
○ 지질정보 GIS DB 및 고생대 지층의 지질정보표준화
○ iGeology 구현을 위하여 디지털 야외지질조사시스템(KMapper) v0.5 제작하고 MGEO 활용체계를 고도화함
□ 기대효과
○ 한반도 중서부의 지구조·층서를 확립하고 동아시아 지체구조 진화사 정립의 해결방안 제시
○ 신규 지질정보를 종합한 1/100만 한국지질도 개정판 발간은 세계적으로 우리나라 지질과학계의 학문적 위상을 고취시킴
○ 지질정보 생산에서 DB, 관리, 대국민서비스까지 일원화하는 iGEOLOGY 시스템 완성
□ 적용분야
○ 한반도 중서부에 트라이아스기 대륙충돌대 존재 여부와 지각진화사 확립으로 한반도와 동아시아 지각진화 연구 분야에 활용
○ 공공/행정기관, 학술연구기관 등의 정보시스템과 연계하여 온·오프라인 대국민 정보 제공

Abstract ▼

1. Tectonic evolution and stratigraphy of the Mid-western Korean Peninsula
Taean-Seosan areas mainly consist of Paleoproterozoic metamorphic basement rocks, meta-sedimentary rocks and granite, Mesoproterozoic granite, Neoproterozoic granite, Paleozoic low-grade meta-sedimentary rocks, and Mesozoi

1. Tectonic evolution and stratigraphy of the Mid-western Korean Peninsula
Taean-Seosan areas mainly consist of Paleoproterozoic metamorphic basement rocks, meta-sedimentary rocks and granite, Mesoproterozoic granite, Neoproterozoic granite, Paleozoic low-grade meta-sedimentary rocks, and Mesozoic granites.
Paleoproterozoic meta-sedimentary rocks are largely composed of schists and quartzites. Schists include sillimanite-staurolite-garnet-andalusite schist, garnet-biotite schist, mica schist, and others whereas quartzites are partly enriched in iron. The youngest SHRIMP U-Pb age groups of the detrital zircons from these schists and quartzites are before ca. 1.86 Ga. Paleoproterozoic biotite granite gneisses are mainly composed of gneisses and granites including (porphyritic) biotite gneiss, augen gneiss, leucocratic granite and amphibolite. It is difficult to establish the stratigraphic sequence of these gneisses and granites but we can broadly constrain the formation (intrusion) ages of the Paleoproterozoic basement rocks to ca. 1.89-1.85 Ga. Alkali hornblende-biotite granite and Paleoproterozoic granite intruded the Paleoproterozoic meta-sedimentary rocks. The SHRIMP zircon U-Pb ages of the granite are determined to ca. 1690 Ma. We can constrain the sedimentation age of the Paleoproterozoic meta-sedimentary rocks to before ca. 1690 Ma based on the intrusion relationship.
Neoproterozoic granites mainly consist of granodiorite (hornblende granite), biotite granite and amphibolite, and characteristically have strong foliation. Amphibolites occur as small bodies together with granodiorite or biotite granite. We newly discriminated the Neoproterozoic granites from formerly defined schists and gneisses based on field evidence, geochemical data, and geochronological data. The SHRIMP zircon U-Pb ages of the Neoproterozoic granites are estimated as ca. 823-817 Ma.
Paleozoic metasedimentary rocks mainly consist of low-grade metasedimentary rocks of biotite schists, phyllite and marble. However, high-grade schists locally occur with the index minerals of sillimanite, staurolite, garnet and andalusite. The Youngest sedimentation age of sillimanite-garnet-biotite schists is estimated as ca. 395 Ma, and metamorphic age as ca. 254 Ma.
Triassic granites are composed of biotite granite exposed in the southern part of the study area, foliated biotite granite and syenite. Age unknown foliated biotite granite and large part of formerly Jurassic granite are newly defined as Triassic. The SHRIMP zircon U-Pb ages of the Triassic granites are estimated as ca. 221-219 Ma.
Jurassic biotite granite is characterized by pink color of alkali feldspar and absence of foliation. The SHRIMP zircon U-Pb ages of the granite is estimated as ca. 186 Ma.
Ganghwado-Gyodongdo-Seokmodo-Yeongjongdo-Yongyudo and adjacent islands was investigated and preliminary 1:100,000 geologic map was made. The stratigraphic units of this area are divided into Paleoproterozoic tonalitic gneiss, biotite gneiss, and granite gneiss, Mesoproterozoic Onsuri Schist and basic-intermediate dykes, Neoproterpzoic meta-psammite and pelitic schist, Devonian schist (Yeongjong Schist), Triassic syenite and granitoids, Jurassic biotite granite and the Tongjin Formation, Cretaceous Munsusan Formation, volcanics, and granitoids, and Quaternary sediments. The previous geologic maps have been modified as follows : 1) granite gneiss, biotite gneiss, and crystalline limestone were found within the Onsuri Schist in Gyodongdo, 2) the Jangbong Schist in Gyodongdo was corrected to granite gneiss, 3) the Onsuri Schist in Jangbongdo and adjacent islands were divided into pelitic schist, meta-psammite, and crystalline limestone and their distribution was confirmed, 4) ancient basic-intermediate dykes were found in the Onsuri Schist in the islet west of Jangbongdo, 5) the Onsuri and Jangbong Schists in Sindo and Sido were corrected to biotite gneiss and the boundary between them and granite was redefined, 6) Mesozoic granitoids in Jangbongdo-Sindo-Sido-Modo were reclassified into Triassic Seonsu Granite and Jurassic biotite granite, 7) age of the low-grade metasedimentary rock in Yeongjongdo was corrected to Paleozoic. In addition, age-uncertain metasedimentary and intrusive rocks in Jangbongdo and adjacent islands were dated through SHRIMP U-Pb zircon analysis, which reveals the presence of Neoproterozoic strata with the youngest detrital zircon age of 980 Ma in Jangbongdo and Mesoproterozoic intrusives with 1250 Ma in Dongmando.
This study also includes the investigation on the Mesozoic sedimentary strata, the Gimpo Group, and main focuses are to refine subdivision of the Gimpo Group for better understanding on the development of the sedimentary system of the Gimpo Basin. This year, a rhyolitic (?) tuff was found in the Tongjin Formation and absolute age will be acquired to compare with paleontologic data. Plant fossils were newly found in the lower part of the overlying Munsusan Formation and more material will be collected during the following year. It was found that the Munsusan Formation was intruded by Cretaceous granite with the age of 109 Ma, and the granite will be compare with larger granite bodies known as Jurassic intrusives to resolve the relationship between the Tongjing and Munsusan formations.
The metamorphic and sedimentary rocks of the Hida Belt has been studied for resolving the east Asian tectonic history by comparison of geologic data among Korea, China, and Japan. SHRIMP U-Pb zorcon age dating for orthogneiss samples from south of Toyama implies that the parental rocks were formed during two separate periods (302 Ma and 254-259 Ma) and secondarily experienced thermal influence during 241-247 Ma. The Hida Belt is supposed to consists of similar basement rocks as in the southeastern part of the Korean Peninsula where the Taebaeksan area and the Yeongnam massif are distributed, but to confirm this, the synthetic study of geophysics, petrology, sedimentology, and geochemistry is required.
The Oseosan and Seongjusan areas, western Chungnam Basin, are studied in terms of the history of sedimentation and deformation. Several notable results can be summarized as follows: 1) Rhyolitic pyroclastic rock and associated tuffaceous sedimentary rock around the Oseosan area are defined as a new lithostratigraphic unit, temporarily referred to Okgye Group here, younger than the Late Triassic to Early Jurassic Nampo Group. The sedimentation of the Okgye Group is estimated to be the Middle to Late Jurassic, based on zircon U-Pb isotopic data (maximum emplacement age of rhyolitic tuff of ca. 177 Ma) and plant fossil taxa (age range from the Middle Jurassic to Early Cretaceous of Coniopteris concinna). Synthetically, the Chungnam Basin continued to subside at least until the Middle to Late (?) Jurassic, after beginning to open in the Late Triassic as suggested by available paleontological data. 2) The geological structures including reverse fault(or thrust) and fold in the study area have trends to the NNE∼NE as well as N∼NW. Although N-S to NW-SE trending folds are unclear in origin, at least a part of the NNE-SSW to NE-SW trending folds are interpreted to be initiated as detachment fold or fault-propagation fold, in association with the activation of NNE-SSW to NE-SW trending major faults. 3) The K-feldspar K-Ar ages of ca. 135 to 106 Ma from the rhyolitic tuff in the Okgye Group possibly indicate cooling ages due to deformation-induced uplift and exhumation. It means that the contractional event imprinted on the Mesozoic non-marine sedimentary basin persisted at least until the Early Cretaceous.
The Cretaceous Buan Volcanics, occurring along NE-trending strike-slip fault in the mid-west Korean Peninsula south to the Chungnam Basin, have an oval shaped in plan with a maximum diameter in ca. 20 km. The volcanics consists of nine mappable lithostratigraphic units, named the Cheonmasan Tuff, Yeondong Tuff, Udongje Tuff, Seokpo Tuff, Gyeokpori Formation, Gomso Rhyolite, Yujeongje Tuff, Byeonsan Tuff, and Samyebong Rhyolite in ascending order. The six explosive units (Cheonmasan Tuff, Yeondong Tuff, Udongje Tuff, Seokpo Tuff, Yujeongje Tuff, Byeonsan Tuff) are composed mainly of rhyolitic, massive (lapilli) tuffs with partial welding and stratification. The two rhyolites (Gomso and Samyebong Rhyolite) is either capped or intruded into the underlying tuffs and sedimentary deposits (Gyeokpori Formation). The rhyolite is dense and shows a vertical to subvertical flow band. A peperite is well developed along the contact between the underlying Gyeokpori Formation and overlying Gomso rhyolite. The SHRIMP U-Pb zircon ages of four tuffs (Cheonmasan Tuff, Udongje Tuff, Seokpo Tuff, and Yujeongje Tuff) are ca. 87 Ma which indicates the Late Cretaceous volcanism. Paleozoic metasedimentary rocks distributed in the Taean Peninsula were analysed in terms of mineralogical and geochemical composition to resolve their provenance. Mineral assemblages, major element, rare earth element, trace element analytical results show that the sediments constituting the Taean and Daehoji formations have been derived by recycling from sedimentary rocks in the uplifted area with compressional regime.
2. 1/1,000,000 scale geologic map of Korea (3rd edition)
In order to construct the base map, coastline of north and south Korea was corrected and redefined and contour lines, drainage patterns, road networks, and information of administrative districts were extracted. Former numerical geologic maps and new geologic information were input. The Geologic map of Korea published by north Korea was collected as RASTER file, then geoinformation of north Korea by geologic period was extracted.
In East Asia, Mesozoic plutons occur as a northeast- and E-W trending magmatic belt and extend also from all the East Asian continental margin and Northeast Asia. Especially, several large-scale Cretaceous volcano-sedimentary basins with major Nto NE-trending faults occur abundantly in and around the Yellow sea as well as Southeast China and southern Korean coastal areas. Mesozoic plutonic rocks occurred extensively in the Korean Peninsula together with minor Permian pluton in the northeastern and southeastern Korean Peninsula. Triassic, Jurassic and Cretaceous plutonism occurred at 246~203 Ma, 199~165 Ma and 120~65 Ma, respectively. The Mesozoic extensive and intensive magmatism is punctuated by a major magmatic quiescence at a ca. 165~120 Ma in the Korean Peninsula.
The Taebaseksan Basin is regarded to have been placed in the marginal area of the Sino-Korea Craton where sedimentary environment was variable place to place during early Paleozoic. Hence, it is difficult to stratigraphically and paleontologically compare the basin with main part of the North China Platform, except for the Taebaek Group which have been intensively studied. Sedimentological and paleontological information of western margin of the Sino-Korea Craton which has been seldomly studied is a key to enhance understanding on the correlation and basin evolution of the Taebaeksan Basin. Joint field work with the Northwestern University to Wuhai area, Inner Mongolia, was planned, but it was canceled due to proliferation of MERS (Middle East Respiratory Syndrome) in Korea. However, based on the specimens previously collected by coworkers from the area, an SCI paper on the revision of some Ordovician trilobites was submitted and accepted during this year.
3. Construction of the integrated geoscience information system
Rock unit standardization is prerequisite for integrated geological information system. Main purpose of rock unit standardization in this project is to provide background data to KMapper (digital geological survey system) and Mgeo (geological information service system). The result of rock unit standardization is usually called as the lexicon, which is a dictionary of mapping unit of geological quadrangles. Therefore, the KIGAM lexicon will reflect viewpoints and interpretations of KIGAM. We selected 24 standardization features such as rock unit name, computer code, status code, map code, background color, pattern code, pattern color, etc. In this year the standardization of 55 units of lower Paleozoic, 31 units of upper Paleozoic and 24 units of middle Mesozoic are completed. Further study on standardization features like age range, status code is needed.
In this study, the construction of the integrated geoscience information system aims at setting up the foundation of component systems for geological survey, information management and public service. In this project, digital geological survey system prototype has been developed to run under the android tablet environment. To be efficiently used in the outdoor environment, the developed system has functions to enter surveyed data considering touch based interface and to apply various geological symbols. To use the collected data in the GIS editing system, geological lithofacies symbols base on SVG(Scalable Vector Graphic) format have been developed. The developed SVG symbols can be used in digital geological survey system, GIS editing tool and web GIS system. Geoscience information management system also has been developed. This system has functions to manage geoscience data produced by geological surveyors and GIS specialists and KIGAM rock unit lexicon data which will be used in digital geological survey system and web service.
Geoscience information such as geological and mineral resources information is an important national information resources. Currently this has been applied in various areas and its demand has been increasing in the areas of environmental pollution, ground disaster, an engineering and construction field and geological surveying work. Under this condition, we constructed GIS and Remote Sensing database for geological information to make best use a variety of area. The result map database are as follows: (1) Satellite image thumbnails and their metadata DB, (2) geologic map in the Chungnam, Munkyeong and Boeun coalfields, (3) Applied geological maps of the northern part of Daejeon, (4) Detailed geological map of Eoil, (5) Mine and Boring DB in the Haenam and Jindo counties. We made a database archive for geologic information for a member of KIGAM and also we has been providing the public these map database currently.

목차 Contents

• 표지 ... 1
• 제 출 문 ... 2
• 연차(1차연도)보고서 요약서 ... 3
• 요 약 문 ... 4
• S U M M A R Y ... 8
• CONTENTS ... 14
• 목차 ... 15
• 제1장 연구개발과제의 개요 ... 17
• 제1절 연구개발의 목적 및 필요성 ... 17
• 1. 연구개발의 목적 ... 17
• 2. 연구개발의 필요성 ... 17
• 제2절 연구개발 범위 ... 18
• 1. 연구개발 최종 목표 ... 18
• 2. 당해연도 연구목표, 연구개발 내용 및 범위 ... 18
• 제2장 국내외 기술개발 현황 ... 20
• 제1절 한반도 중서부의 층서·지구조 규명 ... 20
• 제2절 1/100만 한국지질도(개정 3판) 제작 ... 21
• 제3절 지질기반 통합정보시스템 구축 ... 21
• 제3장 연구개발 수행 내용 및 결과 ... 25
• 제1절 한반도 중서부 층서·지구조 규명 (I) ... 25
• 1. 태안-서산-당진 지역 지층분대 및 지구조·층서도 핵심 지질요소 추출 및 분석 ... 25
• 2. 경기육괴 북서부 쥬라기 이전 지층과 화성암류 층서 분대 ... 44
• 3. 쥬라기 남포층군의 퇴적·구조변형의 시공간적 발달 규명과 백악기 화산암의 산상및 층서 설정 ... 76
• 4. 한반도 중서부 태안반도 일대에 분포하는 고생대 변성퇴적암의 기원지 연구 ... 142
• 제2절 1/100만 한국지질도 제작(개정 3판) ... 163
• 1. 1/100만 축척의 한국지질도 기본도(base map) 작성 ... 163
• 2. 북한지역을 포함한 최신 지질정보자료 수집 및 추출 ... 167
• 3. 중생대 심성암류 지질연대 ... 171
• 4. 서부 북중국 지괴와 태백산 분지의 고생대 층서 대비(중국 서북대학과 공동연구) ... 183
• 제3절 지질기반 통합지질정보시스템 구축 설계 ... 187
• 1. 지질주제도 아카이브 구축(I) ... 187
• 2. 시스템 구축: 수집체계 설계, 관리체계 개발, 활용체계 고도화 ... 225
• 제4장 목표달성도 및 관련분야에의 기여도 ... 257
• 제5장 연구개발 결과의 활용 계획 ... 259
• 부 록 ... 261
• 참고문헌 ... 289
• 끝페이지 ... 291