Article
Geology
Craig R. Sloss, Stephanie Tillquist, Sarah McGill, Tiah Penny, Craig Ballington, Luke Nothdurft, Jessica Trofimovs, Mark J. Lawrence, Christoph E. Schrank
Summary: This study provides a detailed sedimentological, stratigraphic and depositional model for the lower Whakataki Formation, revealing that the turbidite successions were deposited as dilute low-density turbidity currents transporting sediment downslope. The textural and compositional immaturity, combined with the high carbonaceous and carbonate content of the clastic sediments, indicates a proximal detrital input.flows entering the structurally confined basin were deflected to the north-northeast, producing paleoflow along the basin axis and represent deposition in the early stages of trench-slope basin development.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Eric A. Barefoot, Jeffrey A. Nittrouer, Kyle M. Straub
Summary: An appealing strategy for reconstructing paleoenvironmental change is to linearly interpolate between marker beds of known age. However, changes in sedimentary processes can invalidate this method and affect estimates of time from the strata. When sedimentary processes change, measuring time linearly systematically overestimates time duration and misestimates the beginning and end of geologic intervals. Geologic evidence for changes in sediment dispersal can help identify sections of dilated and shifted time, and better resolve time in sedimentary strata.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geology
Etienne Jaillard, Jean-Louis Latil, Jean-Pierre Masse, Rabaa Hfaiedh
Summary: The detailed study of sedimentology and biostratigraphy in the Chott area, southern Central Tunisia, identifies several well-dated depositional sequences in the upper Aptian-Albian series. The upper Aptian sequences show a transition from shallow marine evaporitic deposits to clastic deposits and yield latest Aptian ammonites. The boundary between the Aptian and Albian is suggested to have a long-lasting hiatus and a change from clastic to carbonate deposits. The Albian transgression is expressed by the Knemiceras Beds, which can be correlated with the lower Albian in Central Tunisia based on new ammonite findings. The Knemiceras beds exhibit five distinct morphologies of Knemiceras sp. The overlying massive shelf carbonates are assigned to the uppermost lower Albian and correlated with the Allam Limestone of Central Tunisia. The carbonates are capped by a major discontinuity, correlated with a middle Albian discontinuity in Central Tunisia. The study presents and illustrates the ammonites and rudists fauna found in the area.
CRETACEOUS RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Leandro G. DaSilva, Peir K. Pufahl, Noel P. James, Edi M. Guimaraes, Carolina Reis
Summary: The Bambui Group in central Brazil is a significant sedimentary succession that accumulated during the Cryogenian-Ediacaran period. The study presents a new sequence stratigraphic model, supported by geochemical and structural data, which identifies six stratigraphic sequences that record the depositional evolution from a shallow sea to a foreland basin. These sequences provide important evidence of seawater redox conditions and its significance in the evolution of multicellular animals during the Ediacaran period.
PRECAMBRIAN RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Fengtao Guo, Peter McCabe, Zhiqiang Feng, Changwu Wu, Xueyan Lyu, Weilong Peng, Jinrui Guo
Summary: The early to middle Permian Roseneath-Epsilon-Murteree (REM) strata of the Cooper Basin in Australia are considered the most feasible shale gas play in the country. A systematic study analyzing lithofacies, facies associations, and stacking patterns of cores from nine wells penetrating the REM strata revealed complex sedimentary features and shed new light on the depositional process. The study also conducted sequence stratigraphic analysis, identifying two 1st-order Transgressive-Regressive (T-R) cycles and four sequence units within the REM strata, providing insights for comparison with other shale-dominated gas plays worldwide.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Biwen Wang, Guangfa Zhong, Liaoliang Wang, Min He, Benduo Zhu, Yiqun Guo, Huodai Zhang, Zhe Wu
Summary: This study reports the Yitong submarine canyons - fan apron system (YCFS) in the northern South China Sea. The YCFS consists of approximately 12 submarine canyons and a fan apron, with the canyons being erosion-dominated and the fan apron being depositional. The transition zone between the canyons and the fan apron exhibits features of supercritical turbidity currents.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geology
Jon R. Ineson, Bodil W. Lauridsen, Stefanie Lode, Emma Sheldon, Henning O. Sorensen, Max Wisshak, Kresten Anderskouv
Summary: The Deep Adda-1 well in the Danish Central Graben, North Sea, provides a record of mid-Cretaceous sedimentation and an abrupt environmental shift. The well core spans the lower boundary of the laminated organic-rich Munk Marl Bed (MMB) and the lower Tuxen Formation, documenting a diverse benthic fauna and a condensed succession with hardgrounds. The following MMB indicates poorly oxygenated bottom waters and intermittent disturbance by muddy turbidity currents and debris flows. The core records a sea-level excursion and early Barremian oxygen depletion.
SEDIMENTARY GEOLOGY
(2022)
Article
Multidisciplinary Sciences
Yousif M. Makeen, Xuanlong Shan, Habeeb A. Ayinla, Ekundayo Joseph Adepehin, Ndip Edwin Ayuk, Nura Abdulmumini Yelwa, Jian Yi, Osman M. A. Elhassan, Daijun Fan
Summary: This study focused on the sedimentology and diagenesis of the Zarga and Ghazal formations in the Muglad Basin, Sudan, highlighting the importance of understanding reservoir quality, provenance, and depositional environments to improve exploration and production efficiency. Analysis of subsurface reservoir cores revealed different lithofacies and authigenic minerals, showing a fluvial-to-deltaic depositional environment for the Ghazal formation and a dominant deltaic setting for the Zarga formation. Diagenetic processes like precipitation and cementation were found to be more prevalent than pore-enhancing processes, leading to varying reservoir qualities between the two formations.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Ke Zhang, Hanlie Cheng, Jianfei Wei, Zhaoyuan Cheng, Yong Yao, Minghao Wan
Summary: Reservoir stratigraphic division is a crucial process in oil and gas exploration, as it helps identify gas-bearing layers and provides guidance for reservoir prediction and drilling. This study conducted a comprehensive analysis of geological data using high-resolution sequence stratigraphy methods in the eastern margin of the Ordos Basin, leading to the identification of favorable reservoir sand bodies within the cycle structure.
FRESENIUS ENVIRONMENTAL BULLETIN
(2022)
Article
Environmental Sciences
Feilong Li, Lixun Sun, Xuesong Bai, Hengchun Zhuang
Summary: This study aims to solve the problem of sedimentary facies development types and sedimentary systems determination of the Dongying Formation, and predict the distribution of reservoirs. By comprehensive analysis of seismic, geological, drilling and logging data, and combined with structural evolution characteristics, a sequence stratigraphic framework was established. The results showed that the Dongying Formation has characteristics of multiple provenances and multiple types of reservoirs.
FRESENIUS ENVIRONMENTAL BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
Elizabeth M. Davis, Kurt W. Rudolph, Joel E. Saylor, Thomas J. Lapen, Julia S. Wellner
Summary: The study identifies three main drivers of subsidence in the Western Interior Basin: Mesozoic-early Cenozoic flexure linked to the Sevier Orogeny, Late Cretaceous-Eocene flexure associated with Laramide Uplifts, and Late Cretaceous dynamic subsidence. These factors impact basin geometry and stratigraphic architecture in the region.
Article
Geosciences, Multidisciplinary
Hui Gao, Xinming Wu, Jinyu Zhang, Xiaoming Sun, Zhengfa Bi
Summary: This article presents a workflow for automatically generating synthetic training datasets and demonstrates the effectiveness of using these datasets for seismic clinoform delineation. The workflow includes stochastic stratigraphic forward modeling, conversion to impedance models, simulation of synthetic seismic data, and training a deep neural network. Results from synthetic and field examples show that the network can accurately and efficiently delineate clinoforms in seismic data.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2023)
Article
Environmental Sciences
Randall W. Parkinson, Shimon Wdowinski
Summary: Aggregation of paleo-environmental data from geological investigations in Florida's coastal geomorphic sectors reveals a common response to decelerating sea level rise during the Holocene. The rates of sea level rise have accelerated in the 21st century, and recent studies show the destabilizing effects on the coastline and ecology. The increasing rates of rise are expected to further impact Florida's coastal environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Cecilia Sanders, John Grotzinger
Summary: The Una and Bambui Groups in northeastern and central Brazil are remnants of a vast intracratonic carbonate platform formed on the Sao Francisco Craton during the Ediacaran Period. Characterized by high-energy lithofacies, the depositional setting of the Salitre and Sete Lagoas formations suggest early phosphate mineralization was likely a result of highly local processes of phosphate enrichment on a wave-swept platform environment.
PRECAMBRIAN RESEARCH
(2021)
Article
Geology
Zaki A. Abdel-Fattah
Summary: This paper focuses on the fluvial architecture and depositional facies model of the Late Cretaceous large sandy braided-river system of the Nubia Formation in the central Eastern Desert of Egypt. It identifies two distinctive fluvial architectural styles in the lower and upper members, highlighting different characteristics and depositional environments. The fluvial depositional system and sequences are strongly controlled by Late Cretaceous base-level fluctuations and tectonic pulses of the Laramide Orogeny.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Jingzhe Li, Shasha Liu, Jinliang Zhang, Zhongli Fan, Zhongqiang Sun, Ming Zhang, Yong Yuan, Penghui Zhang
MARINE AND PETROLEUM GEOLOGY
(2015)
Article
Geosciences, Multidisciplinary
Longlong Liu, Jinliang Zhang, Ruoshan Wang, Jinkai Wang, Jiangtao Yu, Zhongqiang Sun, Guangqun Wang, Jiaqi Guo, Shasha Liu, Penghui Zhang, Cunlei Li
ARABIAN JOURNAL OF GEOSCIENCES
(2016)
Article
Geosciences, Multidisciplinary
J. Li, J. Zhang, S. Liu, Z. Fan, H. Xue, Z. Sun, T. Yu
RUSSIAN GEOLOGY AND GEOPHYSICS
(2016)
Article
Geochemistry & Geophysics
Shasha Liu, Eun Young Lee, Jinliang Zhang, Michael Wagreich, Leqiang Zhao, Hui Liu
Summary: The Chaiwopu Depression in northwest China, located between the West Bogda Mountains and the northeastern Tian Shan Mountains, was formed during the Late Paleozoic in the Central Asian Orogenic Belt. The Permian strata exhibit distinct variations, providing significant information on tectonic and depositional evolution. The study of six outcrop sites through lithological, sedimentological, and geochemical analyses revealed a source-to-sink system that occurred in an incipient level of weathering and maturation, a simple recycling process, and arid to semi-arid climatic conditions.
Article
Oceanography
Shasha Liu, Cai Feng, Hongshuai Qi, Jianhui Liu, Yang Wei, Liu Gen
Summary: The beach ecosystem provides valuable economic services. However, there is a lack of quantification of the economic contributions of beaches to human life. This study establishes a framework for beach ecosystem services and summarizes quantification methods. The economic contributions of beach resources in China over the past decade are estimated to be at least yen 4.00 x 1012 ($579.60 x 109). The study also discusses legislation, international tourism competitiveness, beach nourishment, and restoration, and proposes a dynamic and sustainable beach economy.
OCEAN & COASTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Lewei Hao, Huifei Tao, Shasha Liu, Eun Young Lee, Ruiliang Guo, Shutong Li, Junli Qiu, Chengfu Lv
Summary: This study investigates the sedimentary architecture and geomorphology of an embayed beach on the southern of Qinghai Lake using ground penetrating radar, trenches, and modern beach observation. It was found that the beach deposits consist of washover deposition, fair-weather swash deposition, and lagoonal deposition. The formation of the embayed beach can be divided into two stages: lake-level highstand and lake-level lowstand. Hydrodynamic changes in these stages lead to the heterogeneity of sediment distribution, reflected in the morphology and the sedimentary architecture. The interaction of topography and hydrodynamics controls the formation and evolution of the embayed beach.
JOURNAL OF PALEOLIMNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Jinliang Zhang, Shasha Liu, Jingzhe Li, Longlong Liu, Huimin Liu, Zhongqiang Sun
ARABIAN JOURNAL OF GEOSCIENCES
(2017)
Article
Geosciences, Multidisciplinary
Xu Fa, Zhang Penghui, Zhang Jinliang, Liu Jinshui, Hou Guowei, Zhang Ming, Li Jingzhe, Liu Shasha, Guo Jiaqi, Meng Ningning
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2015)
