Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin
<p><span>DOI: 10.17014/ijog.4.3.143-157</span></p><p>This paper introduces the petrographic characteristics and depositional environment of Middle Miocene rocks of the Thien Ung - Mang Cau structure in the central area of Nam Con Son Basin based on the results of analyz...
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| Format: | Article |
| Language: | English |
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Geological Agency
2017-08-01
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| Series: | Indonesian Journal on Geoscience |
| Subjects: | |
| Online Access: | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/387 |
| _version_ | 1818402380962594816 |
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| author | Pham Bao Ngoc Tran Nghi Nguyen Trong Tin Tran Van Tri Nguyen Thi Tuyen Tran Thi Dung Nguyen Thi Phuong Thao |
| author_facet | Pham Bao Ngoc Tran Nghi Nguyen Trong Tin Tran Van Tri Nguyen Thi Tuyen Tran Thi Dung Nguyen Thi Phuong Thao |
| author_sort | Pham Bao Ngoc |
| collection | DOAJ |
| description | <p><span>DOI: 10.17014/ijog.4.3.143-157</span></p><p>This paper introduces the petrographic characteristics and depositional environment of Middle Miocene rocks of the Thien Ung - Mang Cau structure in the central area of Nam Con Son Basin based on the results of analyzing thin sections and structural characteristics of core samples. Middle Miocene sedimentary rocks in the studied area can be divided into three groups: (1) Group of terrigenous rocks comprising greywacke sandstone, arkosic sandstone, lithic-quartz sandstone, greywacke-lithic sandstone, oligomictic siltstone, and bitumenous claystone; (2) Group of carbonate rocks comprising dolomitic limestone and bituminous limestone; (3) Mixed group comprising calcareous sandstone, calcarinate sandstone, arenaceous limestone, calcareous claystone, calcareous silty claystone, dolomitic limestone containing silt, and bitumen. The depositional environment is expressed through petrographic characteristics and structure of the sedimentary rocks in core samples. The greywacke and arkosic sandstones are of medium grain size, poor sorting and roundness, and siliceous cement characterizing the alluvial and estuarine fan environment expressed by massive structure of core samples. The mixed calcareous limestone, arenaceous dolomitic limestone, and calcareous and bituminous clayey siltstone in the core samples are of turbulent flow structure characterizing shallow bay environment with the action of bottom currents. The dolomitic limestones are of relatively homogeneous, of microgranular and fine-granular texture, precipitated in a weakly reducing, semi-closed, and relatively calm bay environment.</p> |
| first_indexed | 2024-12-14T08:07:27Z |
| format | Article |
| id | doaj.art-ef1b8ef4e0b94c45913b51cde9a8cf19 |
| institution | Directory Open Access Journal |
| issn | 2355-9314 2355-9306 |
| language | English |
| last_indexed | 2024-12-14T08:07:27Z |
| publishDate | 2017-08-01 |
| publisher | Geological Agency |
| record_format | Article |
| series | Indonesian Journal on Geoscience |
| spelling | doaj.art-ef1b8ef4e0b94c45913b51cde9a8cf192022-12-21T23:10:08ZengGeological AgencyIndonesian Journal on Geoscience2355-93142355-93062017-08-014314315710.17014/ijog.4.3.143-157227Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son BasinPham Bao Ngoc0Tran Nghi1Nguyen Trong Tin2Tran Van Tri3Nguyen Thi Tuyen4Tran Thi Dung5Nguyen Thi Phuong Thao6PetroVietnam UniversityHanoi University of ScienceVietnam Petroleum Geology UnionGeneral Department of Geology and and Minerals of VietnamInsitute for Geo-Environmental Research and Adaptation of Climate ChangeHanoi University of ScienceInsitute for Geo-Environmental Research and Adaptation of Climate Change<p><span>DOI: 10.17014/ijog.4.3.143-157</span></p><p>This paper introduces the petrographic characteristics and depositional environment of Middle Miocene rocks of the Thien Ung - Mang Cau structure in the central area of Nam Con Son Basin based on the results of analyzing thin sections and structural characteristics of core samples. Middle Miocene sedimentary rocks in the studied area can be divided into three groups: (1) Group of terrigenous rocks comprising greywacke sandstone, arkosic sandstone, lithic-quartz sandstone, greywacke-lithic sandstone, oligomictic siltstone, and bitumenous claystone; (2) Group of carbonate rocks comprising dolomitic limestone and bituminous limestone; (3) Mixed group comprising calcareous sandstone, calcarinate sandstone, arenaceous limestone, calcareous claystone, calcareous silty claystone, dolomitic limestone containing silt, and bitumen. The depositional environment is expressed through petrographic characteristics and structure of the sedimentary rocks in core samples. The greywacke and arkosic sandstones are of medium grain size, poor sorting and roundness, and siliceous cement characterizing the alluvial and estuarine fan environment expressed by massive structure of core samples. The mixed calcareous limestone, arenaceous dolomitic limestone, and calcareous and bituminous clayey siltstone in the core samples are of turbulent flow structure characterizing shallow bay environment with the action of bottom currents. The dolomitic limestones are of relatively homogeneous, of microgranular and fine-granular texture, precipitated in a weakly reducing, semi-closed, and relatively calm bay environment.</p>https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/387calcareous sandstonecalcarinate sandstonecalcareous clayey siltstonebituminous calcareous claystoneturbulent flow structureThien Ung - Mang Cau structure |
| spellingShingle | Pham Bao Ngoc Tran Nghi Nguyen Trong Tin Tran Van Tri Nguyen Thi Tuyen Tran Thi Dung Nguyen Thi Phuong Thao Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin Indonesian Journal on Geoscience calcareous sandstone calcarinate sandstone calcareous clayey siltstone bituminous calcareous claystone turbulent flow structure Thien Ung - Mang Cau structure |
| title | Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin |
| title_full | Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin |
| title_fullStr | Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin |
| title_full_unstemmed | Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin |
| title_short | Petrographic Characteristics and Depositional Environment Evolution of Middle Miocene Sediments in the Thien Ung - Mang Cau Structure of Nam Con Son Basin |
| title_sort | petrographic characteristics and depositional environment evolution of middle miocene sediments in the thien ung mang cau structure of nam con son basin |
| topic | calcareous sandstone calcarinate sandstone calcareous clayey siltstone bituminous calcareous claystone turbulent flow structure Thien Ung - Mang Cau structure |
| url | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/387 |
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