Results 31 to 40 of about 235,656 (299)

Voluminous silica precipitated from martian waters during late-stage aqueous alteration [PDF]

, 2020
Mars' transition from an early "warm and wet" to the "cold and dry" environment left fingerprints on the geological record of fluvial activity on Mars. The morphological and mineralogical observations of aqueous activity provided varying constraints on the condition and duration of liquid water on martian surface.
arxiv   +1 more source

Characteristics and classification of paleozoic tight reservoirs in the central uplift of the South Yellow Sea Basin

Energy Geoscience, 2022
Several sets of Paleozoic tight reservoirs are developed in the Central Uplift of the South Yellow Sea Basin. A qualitative analysis of the microscopic pore structure of the tight reservoir rocks was carried out through cast thin slice and scanning ...
Yumao Pang, Xingwei Guo, Xiangchun Chang, Junjian Zhang, Jingqi Zhou, Laixing Cai   +5 more
doaj  

Compositional and multivariate statistical analyses for grain-size characterisation of intertidal sedimentary facies in an estuarine environment

Geology, Ecology, and Landscapes, 2020
This study presents the characterisation of grain size dynamics within an estuarine environment through statistical summarisation of grain size distribution and multivariate statistics.
Temitope D. Timothy Oyedotun
doaj   +1 more source

SEDucate: sedimentary log exercises for an active learning environment

Sedimentologika, 2023
Active learning in higher education has been shown to improve students’ learning experience by focusing on a student-centered environment. However, the development of realistic activities that simulate the complexity of real world examples while being ...
Bjorn Nyberg, Henk Keers, Sigrid Næsheim, Lisbeth Vedå, Gary Weissmann   +4 more
doaj   +1 more source

Sedimentary Environment, Diagenesis, Sequence Stratigraphy, and Reservoir Quality of the Ilam Formation in Dezful Embayment and Abadan Plain in South-West Iran [PDF]

arXiv, 2022
The Ilam Formation Cenomanian to Santonian in age is considered one of the main rock reservoirs of the Bangestan Group in the southwest of Iran. This formation mostly consists of carbonate rocks. To examine the sedimentary environment, diagenesis, sequence stratigraphy, and reservoir quality of Ilam Formation in Dezful embayment and Abadan Plain, four ...
arxiv  

Stratigraphy of Aeolis Dorsa, Mars: stratigraphic context of the great river deposits [PDF]

Icarus (2015), 253, 223-242, 2017
Unraveling the stratigraphic record is the key to understanding ancient climate and past climate changes on Mars. River deposits when placed in stratigraphic order could constrain the number, magnitudes, and durations of the wettest climates in Mars history. We establish the stratigraphic context of river deposits in Aeolis Dorsa sedimentary basin, 10E
arxiv   +1 more source

Influence of Permeability Anisotropy and Layered Heterogeneity on Geothermal Energy Battery Storage [PDF]

Geothermics 2020, 2020
The Geothermal Battery Energy Storage concept has been proposed to provide large-scale heat storage when solar radiance is available, to be later recovered for economic benefit. The concept uses solar radiance to heat water on the surface which is then injected into a suitable subsurface formation.
arxiv   +1 more source

Depositional environment and sequence stratigraphy of the Asmari Formation in Kuh-e Asmari and Kuh-e Gurpi surface sections [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
In this research the sedimentary successions of the Asmari Formation with the age of Oligocene – Miocene in two outcrops of kuh–e Asmari, located in the Dezful embayment with a thickness of 349 m and kuh–e Gurpi (Pabdeh valley), located at the Izeh
Mahnaz Dehghanzadeh, Mohammad Hossein Adabi, Mir Reza Moussavi, Abbas Sadeghi, Shahram Avarjani   +4 more
doaj  

Interpretation and Reconstruction of Depositional Environment and Petroleum Source Rock Using Outcrop Gamma-ray Log Spectrometry From the Huai Hin Lat Formation, Thailand

Frontiers in Earth Science, 2021
Gamma ray logs are most useful in identifying subsurface lithology and interpreting depositional environments. This study highlights the use of outcrop gamma-ray logs along with outcrop observations and total organic carbon (TOC) analysis to provide the ...
Chawisa Phujareanchaiwon, Piyaphong Chenrai, Piyaphong Chenrai, Kasira Laitrakull   +3 more
doaj   +1 more source

Sedimentary pyrite sulfur isotopes track the local dynamics of the Peruvian oxygen minimum zone

Nature Communications, 2021
Sulfur cycling is ubiquitous in sedimentary environments, where it mediates organic carbon remineralization, impacting both local and global redox budgets, and leaving an imprint in pyrite sulfur isotope ratios (δ34Spyr).
V. Pasquier, D. Fike, I. Halevy
semanticscholar   +1 more source