Results 21 to 30 of about 235,656 (299)

In-situ δ18O and 87Sr/86Sr proxies in an unconformable clastic unit at the Ordovician–Silurian transition

Scientific Reports, 2023
Clastic successions found in the carbonate platform of continental margin during the Ordovician–Silurian Transition (OST) period are archives for interpreting paleo-depositional systems.
Chaewon Park, Yungoo Song, Namsoo Kim, Sung-Ja Choi, Ueechan Chwae, Yirang Jang, Sanghoon Kwon, Jeongmin Kim, Ha Kim, Youn-Joong Jeong   +9 more
doaj   +1 more source

Sedimentary Facies and Palynological Studies of Ajali Sandstones Formation Outcropping in Idah, Northern Anambra Basin, Nigeria

Journal of Applied Sciences and Environmental Management, 2023
The paleo-depositional environment of the Maastrichtian Ajali Sandstone Formation of the Anambra Basin has remained controversial as numerous studies have inferred differing origins of the sedimentary unit. This study presents analytical evidence on the
T. S. Alege, T. O. Tella, G. O. Aigbadon, J. I. Omada   +3 more
doaj   +1 more source

Factors controlling spatial distribution of complex lithology in transitional shale strata: Implications from logging and 3D seismic data, Shan-2 Lower Sub-member, Eastern Ordos Basin

Frontiers in Earth Science, 2023
The Shanxi Formation Shan-2 Lower Sub-member transitional shale in the eastern Ordos Basin is characterized by high total organic carbon value, wide distribution, and large single-layer/cumulative thickness; it is the key target interval for transitional
Xuxu Wang, Lu Zhou, Lu Zhou, Yong Wu, Yong Wu, Shuxin Li, Yifan Gu, Xingtao Li   +7 more
doaj   +1 more source

Microfacies and depositional environment of Shiranish Formation in Ain Zalah and Butmah Oil fields north west Iraq [PDF]

Kirkuk Journal of Science, 2016
This study is reveal the characteristics of Shiranish formation to elucidate the sedimentological properties Ain Zalah and Butmah Oil fields northwest in Iraq from wells Az-24, Az-29, But-15. The studied rocks are consist of limestone and marly limestone.
Faris N .AL-Juboury, Wisam A .AL-Juboury, Abdul-Salam M.AL-Taraf   +2 more
doaj   +1 more source

Geochemical characteristics and depositional environment of the Shahejie Formation in the Binnan Oilfield, China

Journal of Geophysics and Engineering, 2020
Trace elements in sedimentary rocks are highly sensitive to palaeoaquatic environmental changes in a sedimentary environment, making them an effective means for studying the paleoclimate and paleoenvironment during the deposition of sediments.
Xiaochun Zuo, Cunlei Li, Jinliang Zhang, Guiyang Ma, Panpan Chen   +4 more
semanticscholar   +1 more source

Lithofacies And Depositional Analysis Environment Of West Section Kolok Nan Tuo Village, Sawahlunto City, West Of Sumatera

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2018
Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area is located at coordinates 00 ° 36'57,85 '' - 00 ° 37'56,89 '' latitude and 100 ° 42'10,08 '' 100 ° 43'47,28 " BT.
Catur Cahyaningsih, Anjas Latif Ritonga, Shaury Aldila, Zulhikmah Zulhikmah   +3 more
doaj   +1 more source

Microfacies, Sedimentary Environment, Diagenesis and Petrophysical Evaluation of the Sarvak Formation in the framework of Sequence Stratigraphy in North-Dezful Embayment, southwestern Iran [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2023
The subsurface section of the Sarvak Formation with a thickness of 455 m is located in the North-Dezful Embayment. The Sarvak Formation is underlain by the Ilam Formation with erosional discontinuity and is overlain probably by the Shale of the Kazhdumi ...
Zhila Rahmani, Mohammadhossein Adabi, Ehsan Dehyadegari, Alireza Rostami   +3 more
doaj   +1 more source

Sedimentary molybdenum and uranium: Improving proxies for deoxygenation in coastal depositional environments

Chemical Geology, 2023
Sedimentary molybdenum (Mo) and uranium (U) enrichments are widely used to reconstruct changes in bottom water oxygen conditions in aquatic environments. Until now, most studies using Mo and U have focused on restricted suboxic-euxinic basins and continental margin oxygen minimum zones (OMZs), leaving mildly reducing and oxic (but eutrophic) coastal ...
Paul, K. Mareike, van Helmond, Niels A.G.M., Slomp, Caroline P., Jokinen, Sami A., Virtasalo, Joonas J., Filipsson, Helena L., Jilbert, Tom   +6 more
openaire   +4 more sources

Geochemistry of the black rock series of lower Cambrian Qiongzhusi Formation, SW Yangtze Block, China: Reconstruction of sedimentary and tectonic environments

Open Geosciences, 2021
The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block.
Liu Hao, Wang Chan, Li Yong, Deng Jianghong, Deng Bin, Feng Yuexing, Chen Hui, Xu Yunlong, Zhao Shaoze   +8 more
doaj   +1 more source

LITHOFACIES AND DEPOSITIONAL ENVIRONMENT OF VOLCANO-SEDIMENTARY DEPOSITS OF SE MAYO OULO BASIN [PDF]

American Journal of Geoscience, 2013
The study of volcano-sedimentary deposits of Mangbai in SE Mayo Oulo basin-Cameroon leads to the identification of five major distinct lithofacies t ypes. From the coarset to the finest lithofacies, t here are: Gb-clast supported by massive coble and boulder, Gg-granule to massive gravel, Sm-massive sand, Shhorizontal layered sandstones, Fml-massive ...
Menkem, E.F., /Sebag, David, Ngatcha, B.N., Durand, A.   +3 more
openaire   +5 more sources