Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/08051615221 |
Depositional environments and sequence stratigraphy of carbonate mudrocks using conventional geologic observations, multiscale electrofacies visualization, and geochemical analysis: The case of the Tuwaiq Mountain and Hanifa Formations in a basinal setting, Saudi Arabia | |
Al Ibrahim, Mustafa A.1,2; Sarg, J. Frederick3; Hurley, Neil4; Cantrell, Dave L.1; Humphrey, John D.5 | |
2017-05-01 | |
发表期刊 | AAPG BULLETIN
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ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2017 |
卷号 | 101期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia; USA |
英文摘要 | Depositional interpretation and sequence stratigraphic analysis of carbonate mudrocks requires numerical analysis and data integration to achieve quantitative, predictive stratigraphic and geochemical models. A depositional and sequence stratigraphic analysis is built for a basinal interval of the Tuwaiq Mountain and Hanifa Formations, Saudi Arabia. Conventional geologic interpretation, automated electrofacies analysis, and geochemical interpretation are integrated using quantitative means. Cluster analysis of well logs using self-organizing maps and hierarchical clustering allowed for a multiscale electrofacies analysis. This is useful for identifying major lithological surfaces, which commonly correspond to sequence stratigraphic surfaces. Geochemical data were used for depositional environment interpretation, such as sediment provenance, redox, and paleoproductivity conditions. Factor analysis is used to group element data. Redox and paleoproductivity indices were calculated using electrofacies clustering of different elemental groups. Electrofacies analysis shows good correlation with the lithofacies; that is, lithofacies can be identified from logs. Five major lithofacies have been identified in the studied interval: (1) wispy laminated skeletal wackestones to mudstones; (2) differentially cemented skeletal wackestones, packstones, and grainstones; (3) laminated peloidal mudstones to wackestones; (4) bioturbated packstones and wackestones; and (5) palmate anhydrite. The majority of the interval is interpreted to be deposited by gravity processes. Four major sequences have been identified in the Tuwaiq Mountain and Hanifa Formations made of transgressive and high-stand systems tracts. The uppermost bioturbated packstones of the Hanifa Formation are interpreted to be a lowstand systems tract with subsequent restriction leading to the deposition of gypsum. In the studied interval, total organic carbon (TOC) content correlates well with suboxic to anoxic intervals that have high paleoproductivity. Complete anoxia is not a prerequisite for organic matter preservation. These high TOC intervals are mainly in transgressive systems tracts. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401859700003 |
WOS关键词 | SEDIMENTS ; PLATFORM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24504 |
专题 | 地球科学 |
作者单位 | 1.Saudi Aramco, EXPEC Adv Res Ctr, Geol Technol Team, Bldg 9172,Wing A, Dhahran 31311, Saudi Arabia; 2.Stanford Univ, Green Earth Sci Bldg,Room 50,365 Panama St, Stanford, CA 94305 USA; 3.Colorado Sch Mines, Dept Geol & Geol Engn, 1516 Illinois St, Golden, CO 80401 USA; 4.Chevron, 1500 Louisiana St,Room 31114, Houston, TX 77002 USA; 5.SedimentarySolutions Com, 4625 15th St C, Boulder, CO 80304 USA |
推荐引用方式 GB/T 7714 | Al Ibrahim, Mustafa A.,Sarg, J. Frederick,Hurley, Neil,et al. Depositional environments and sequence stratigraphy of carbonate mudrocks using conventional geologic observations, multiscale electrofacies visualization, and geochemical analysis: The case of the Tuwaiq Mountain and Hanifa Formations in a basinal setting, Saudi Arabia[J]. AAPG BULLETIN,2017,101(5). |
APA | Al Ibrahim, Mustafa A.,Sarg, J. Frederick,Hurley, Neil,Cantrell, Dave L.,&Humphrey, John D..(2017).Depositional environments and sequence stratigraphy of carbonate mudrocks using conventional geologic observations, multiscale electrofacies visualization, and geochemical analysis: The case of the Tuwaiq Mountain and Hanifa Formations in a basinal setting, Saudi Arabia.AAPG BULLETIN,101(5). |
MLA | Al Ibrahim, Mustafa A.,et al."Depositional environments and sequence stratigraphy of carbonate mudrocks using conventional geologic observations, multiscale electrofacies visualization, and geochemical analysis: The case of the Tuwaiq Mountain and Hanifa Formations in a basinal setting, Saudi Arabia".AAPG BULLETIN 101.5(2017). |
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