Article
Geosciences, Multidisciplinary
Bodhisatwa Hazra, Deependra Pratap Singh, Prasenjeet Chakraborty, Pradeep K. Singh, Santi Gopal Sahu, Ashis K. Adak
Summary: The Rock-Eval pyrolysis-stage and oxidation-stage parameters are used for source-rock screening and thermal maturity assessment, with S4T(max) curve being identified as a potential thermal maturity proxy for shales. S4T(max) shows good differentiation for shales of different maturity levels.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Yoav O. Rosenberg, Itay J. Reznik, Harold J. Vinegar, Shimon Feinstein, Yuval Bartov
Summary: This study explores the natural thermal maturation of sulfur-rich Type II-S source rocks, comparing geochemical data from the Golan Basin with an artificial maturation experiment in the Shfela Basin. The research suggests that sulfur content may affect hydrocarbon generation and contribute to differences in maturation paths between different kerogens.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Lingling Liao, Yunpeng Wang, Chengsheng Chen, Yinhua Pan
Summary: This study evaluates the generation, expulsion, and retention of hydrocarbons in three sets of lacustrine shales in eastern China. The results show differences in activation energy and hydrocarbon generation rates among the shale samples. The Nenjiang shale has the strongest retention ability, while the Shahejie shale has the strongest expulsion ability. The pore structure of lacustrine shales is identified as a key factor controlling hydrocarbon retention.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Energy & Fuels
Ali Ihsan Karayigit, Riza Gorkem Oskay, Yakup celik
Summary: The late Oligocene coal seams in the Malkara coal field are influenced by vegetation and detrital input ratio, exhibiting high TOC and high hydrogen content, mainly generating natural gas. The Rock-Eval pyrolysis data should be used cautiously and verified with traditional coal parameters to avoid misinterpretations.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Energy & Fuels
A. Arysanto, R. Littke, M. Dorner, M. Erdmann, S. Grohmann
Summary: This study proposes a new approach to investigate hydrocarbon generation and migration processes in petroleum source rocks under laboratory conditions. The researchers used programmed open-system pyrolysis on small source rock plugs to induce changes in the type and distribution of solid bitumen. Organic petrography was used to qualitatively investigate the changes before and after the pyrolysis experiments. The results showed that thermal extraction and chemical extraction can alter the distribution of solid bitumen in the source rock plugs.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Environmental Sciences
David Blake, Mary C. Boyce, William D. Stock, Pierre Horwitz
Summary: This study found that fires can increase alkaline cation concentrations, oxidize sulfidic wetland sediments, generate acidic pore waters, and mobilize metal species. These changes are seasonal and can last for several years, depleting the buffering capacity of sediments.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Geosciences, Multidisciplinary
Chenjia Zhang, Jian Cao, Baoli Xiang, Ni Zhou, Erting Li, Yuce Wang, Jin Liu
Summary: This study focused on the middle Permian Lucaogou Formation in the Jimusar Sag, Junggar Basin, China. The study found that shale oil in this area mainly occurs in fractures and pores in sandstones and carbonate rocks, while in mudstones, it mainly occurs in the matrix and kerogen, and on mineral surfaces in an adsorbed state. The results showed that siltstone has the highest potential as a shale oil reservoir.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Review
Engineering, Environmental
Nathalie Conil, Philippe Gombert, Marwan Al Heib, Nicolas Spitzenteder, Roxane Muller, Fabrice Gaumet, Danielle Pajiep
Summary: In January 1910, a chalk mine in Chateau-Landon collapsed due to a flood, causing 7 fatalities. To understand similar disasters and explore the behavior of chalk, an underground observatory was established in the Royer mine. The observatory monitors water-rock interactions and conducts laboratory tests to assess the stability of the mine. This paper provides a summary of geohazard assessment challenges and presents the objectives, perspectives, and initial results of the observatory after two years of operation.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Review
Chemistry, Multidisciplinary
Alidu Rashid, Numair Ahmed Siddiqui, Cornelius Borecho Bavoh, Akm Eahsanul Haque, Muhammed Usman, Sani Ado Kasim, Mohamed A. K. ElGhali, Syahrir Ridha
Summary: This study aims to provide researchers with all the necessary information about potential hydrocarbon-producing areas in Malaysia and the various lithologies connected to them by analyzing all earlier studies carried out in Malaysia. According to the data, the Bintulu, Pinangah, Begrih, Liang, and Tanjong formations have the highest potential to generate hydrocarbons in Malaysia, while the Kroh, Setap, Kalabakan, Temburong, and Belaga formations have the least potential. It is recommended that critical exploration activities be focused on the tertiary-aged formations, particularly those in East Malaysia, in order to increase Malaysia's hydrocarbon production.
APPLIED SCIENCES-BASEL
(2022)
Article
Multidisciplinary Sciences
Chloe Brown, Doreen S. Boyd, Sofie Sjogersten, Christopher H. Vane
Summary: In this paper, organic geochemical analysis and remote sensing data were used to predict peat conditions and carbon storage in the North Selangor Peat Swamp forest, Malaysia. The study found that degraded peatland areas can be identified using remotely sensed data, which can be used to support conservation and restoration efforts.
Article
Geosciences, Multidisciplinary
Silpa Thankan, V. Nandakumar, S. Shivapriya
Summary: Fluid inclusion techniques and rock evaluation analysis were used to study the fluid inclusion parameters and source rock characteristics of two dry wells. The results indicate the potential for finding high-value oil prospects near the RV-1 well in Mumbai offshore basin, while there is minimal chance of oil generation near the KKD-1A well in Kerala-Konkan basin.
GEOSCIENCE FRONTIERS
(2023)
Article
Chemistry, Analytical
Jeremy Jacob, Frederic Delarue, Yoann Copard, Claude Le Milbeau, Laurent Grasset, Patrick Brockmann
Summary: Natural organic matter (OM) has a complex structure, and its complete structural and chemical description poses a challenge. The Rock-Eval (R) device is a fast and affordable method for obtaining key quantitative and qualitative parameters on OM. This study compares Rock-Eval (R) pyrolysis with total ion current (TIC) traces obtained by a temperature-programmed pyrolyzer coupled to a standard mass spectrometer (Py-MS) to determine the extent to which this approach can be generalized. The results show good quantitative and qualitative agreements between the two methods, providing support for the assumption of deconvoluting S2 pyrograms.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Geochemistry & Geophysics
Qiqi Li, Fengling Chen, Shiqiang Wu, Liang Zhang, Yuxuan Wang, Shang Xu
Summary: Due to the potentially low profit of unconventional resource development, it is crucial to quickly identify favorable areas. This study introduces a new evaluation index (SE) that uses Rock-Eval data and mass balance to assess shale oil potential.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Xinyang Fan, Tim J. Peterson, Benjamin J. Henley, Meenakshi Arora
Summary: This paper proposes methods to quantify the sensitivity of groundwater level and recharge to temporal climate variability across Australia. It found that the sensitivity of head and recharge to precipitation change is nationally correlated, suggesting large-scale effects. These findings provide valuable insights for sustainable groundwater management.
WATER RESOURCES RESEARCH
(2023)
Article
Energy & Fuels
Qamar Yasin, Syrine Baklouti, Perveiz Khalid, Syed Haroon Ali, Cyril D. Boateng, Qizhen Du
Summary: Breakthroughs in shale gas exploration and production technology in China offer a potential solution to Pakistan's energy crises. Evaluating the shale gas prospects in the Kohat-Potwar Plateau of Pakistan reveals good potential for shale gas with characteristics similar to the Longmaxi shale of Sichuan Basin, China. Critical role of sealing mechanism in shale gas reservoirs is emphasized, with further scrutiny of sealing capacities essential to understand shale gas preservation and enrichment.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Applied
Steven J. Rowland, Paul A. Sutton, Barbara von der Luehe, John K. Volkman, Christopher H. Vane, Simon N. Ingram, Charlotte Dunn, Diane Claridge
Summary: For nearly 200 years, ambrein was believed to only exist in coproliths produced in a small percentage of sperm whales. However, recent research has shown that ambrein can also be detected in human corpses' adipocere/faeces, as well as in the faeces of other mammals.
NATURAL PRODUCT RESEARCH
(2021)
Article
Environmental Sciences
Alan M. MacDonald, R. Murray Lark, Richard G. Taylor, Tamiru Abiye, Helen C. Fallas, Guillaume Favreau, Ibrahim B. Goni, Seifu Kebede, Bridget Scanlon, James P. R. Sorensen, Moshood Tijani, Kirsty A. Upton, Charles West
Summary: Groundwater recharge rates in Africa were quantified for the period 1970-2019, revealing measurable recharge in most environments but lower rates in arid and semi-arid regions. The study found that only LTA rainfall is significantly related to LTA recharge at the continental scale, while other factors are important at local scales. The dataset provides valuable information for assessing groundwater development potential and water security in Africa.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Energy & Fuels
Wei Li, Lee A. Stevens, Clement N. Uguna, Christopher H. Vane, Will Meredith, Ling Tang, Qianwen Li, Colin E. Snape
Summary: Moisture in shales can negatively impact gas adsorption and pore structure under reservoir conditions, affecting methane adsorption capacity. The presence of water reduces the micropores volume, blocks micropore necks, and results in reduced accessible pores for gas transport, leading to significant decreases in surface area and pore volume. Failure to consider moisture levels can lead to overestimation of the total gas in place for shale formations.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Multidisciplinary Sciences
Aleksandra Gonciaruk, Matthew R. Hall, Michael W. Fay, Christopher D. J. Parmenter, Christopher H. Vane, Andrei N. Khlobystov, Nino Ripepi
Summary: Gas storage and recovery processes in shales are influenced by nano-scale porosity and chemical composition. Research shows that gas adsorption at low pressure is controlled by pore width rather than chemical composition. Nanoscale structure of kerogen includes various forms, allowing accurate prediction of gas sorption, storage, and diffusion properties in shales.
SCIENTIFIC REPORTS
(2021)
Article
Soil Science
Hannah V. Cooper, Sofie Sjogersten, Richard M. Lark, Nicholas T. Girkin, Christopher H. Vane, Juliano C. Calonego, Ciro Rosolem, Sacha J. Mooney
Summary: Contrasting tillage strategies have significant effects on soil structure, organic carbon concentration and stability. Zero tillage may enhance soil organic carbon retention capacity and improve aggregate formation over time.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Biodiversity Conservation
Andrew C. Kemp, Christopher H. Vane, Alexander W. Kim, Christopher L. Dutton, Amanda L. Subalusky, Stuart K. Kemp, Andrew C. Parnell
Summary: Conservation paleobiology aims to predict future changes and inform management decisions by reconstructing ecological communities and environmental conditions using proxies. Fecal steroids were found to be a potential proxy for reconstructing the time-evolving composition of megafauna populations in East Africa, with distinctive characteristics reflecting diet and digestion processes.
BIODIVERSITY AND CONSERVATION
(2022)
Article
Energy & Fuels
Wei Li, Lee A. Stevens, Will Meredith, Clement N. Uguna, Christopher H. Vane, Bo Zhang, Andrew D. Carr, Dingye Zheng, Colin E. Snape
Summary: The porosity and methane adsorption capacity of shale can be affected by moisture and oil in the pore structure, as well as naturally present oil. Extracting oil from shale can lead to changes in nanopore volume and an increase in methane adsorption capacity. The extracted oil mainly resides in micro and mesopores, and its removal can unblock the micropore necks and enlarge the accessible pore volume. The moisture content in the extracted shales is lower, and the methane adsorption capacity increases after oil extraction.
Article
Water Resources
Abrar Habib, Adrian P. Butler, John P. Bloomfield, James P. R. Sorensen
Summary: Fractal analysis and multi-objective pattern search algorithm were used to optimize and calibrate a hydrological model in this study. The results show that some simulations can be eliminated based on poor performance in the fractal domain, contributing to capturing the fluctuation structure of the simulations, and revealing the sensitivity of some parameters to fractal behavior.
HYDROLOGICAL SCIENCES JOURNAL
(2022)
Article
Geochemistry & Geophysics
Christopher H. Vane, Alexander W. Kim, Raquel A. Lopes dos Santos, Joel C. Gill, Vicky Moss-Hayes, Jemimah K. Mulu, Jessica R. Mackie, Antonio MPJ. Ferreira, Simon R. Chenery, Lydia A. Olaka
Summary: The study found that sediments in Nairobi slums are generally of poor quality, with high levels of toxic substances and noticeable presence of untreated human feces. Different slums showed varying degrees of contamination of hormones, drugs, and antibiotics. Persistent organic pollutants and trace metals also showed some level of contamination, calling for stronger policy measures to improve urban infrastructure and protect ecological and human health.
APPLIED GEOCHEMISTRY
(2022)
Article
Environmental Sciences
Elizabeth M. Flint, Matthew J. Ascott, Daren C. Gooddy, Mason O. Stahl, Ben W. J. Surridge
Summary: Excessive nutrient concentrations in fresh waters are a global problem, and further research has found that freshwater abstractions from surface waters and groundwaters, as well as watermains leakage, contribute to significant nitrate-N fluxes. In the United States, freshwater abstraction retains 417 kt NO3-N/yr, and watermains leakage returns 7 kt NO3-N/yr back to the environment. There are large regional variations in these fluxes, with higher fluxes typically found in the eastern regions. These findings are important for policymakers and water resource managers in better managing the impact of nitrogen in the environment and should be included in national and global nitrogen budgets.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Correction
Multidisciplinary Sciences
Yannick Garcin, Enno Schefuss, Greta C. Dargie, Donna Hawthorne, Ian T. Lawson, David Sebag, George E. Biddulph, Bart Crezee, Yannick E. Bocko, Suspense A. Ifo, Y. Emmanuel Mampouya Wenina, Mackline Mbemba, Corneille E. N. Ewango, Ovide Emba, Pierre Bola, Joseph Kanyama Tabu, Genevieve Tyrrell, Dylan M. Young, Ghislain Gassier, Nicholas T. Girkin, Christopher H. Vane, Thierry Adatte, Andy J. Baird, Arnoud Boom, Pauline Gulliver, Paul J. Morris, Susan E. Page, Sofie Sjogersten, Simon L. Lewis
Article
Environmental Sciences
Elizabeth M. M. Flint, Matthew J. J. Ascott, Daren C. C. Gooddy, Mason O. O. Stahl, Ben W. J. Surridge
Summary: Human activity has led to excessive phosphorus levels and eutrophication in US coastal and freshwater areas. Understanding phosphorus sources is crucial for effective management. Public water systems use phosphate to control corrosion, adding 4-14.9 kt PO4-P yr(-1) to the US water distribution network in 2015. Leakage and outdoor water use resulted in the loss of 0.7-2.6 kt PO4-P yr(-1), with 9.3 kt PO4-P yr(-1) being returned to wastewater treatment plants, accounting for 2.7% of the national influent P load.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Multidisciplinary Sciences
Chloe Brown, Doreen S. Boyd, Sofie Sjogersten, Christopher H. Vane
Summary: In this paper, organic geochemical analysis and remote sensing data were used to predict peat conditions and carbon storage in the North Selangor Peat Swamp forest, Malaysia. The study found that degraded peatland areas can be identified using remotely sensed data, which can be used to support conservation and restoration efforts.
Article
Environmental Sciences
Alison M. Williams-Clayson, Christopher H. Vane, Matthew D. Jones, Russell Thomas, Alexander W. Kim, Christopher Taylor, Darren J. Beriro
Summary: This study investigated soils sampled from 10 former manufactured gas plants in the UK using GC-MS/MS and RE. The distributions and concentrations of PAHs and the parameters of RE were analyzed to establish relationships between soils and the MGP processes history. The results showed that PAHs distributions and RE parameters can assist with differentiating between MGP processes, and RE parameters have the potential to estimate the reactivity and release of PAHs from soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Ioannis Matiatos, Leonard Wassenaar, Lucilena R. Monteiro, Jason J. Venkiteswaran, Daren C. Gooddy, Pascal Boeckx, Elisa Sacchi, Fu-Jun Yue, Greg Michalski, Carlos Alonso-Hernandez, Christina Biasi, Lhoussaine Bouchaou, Nandana Edirisinghe, Widad Fadhullah, Joseph R. Fianko, Alejandro Garcia-Moya, Nerantzis Kazakis, Si-Liang Li, Minh T. N. Luu, Sakhila Priyadarshanee, Viviana Re, Diego S. Rivera, Asuncion Romanelli, Prasanta Sanyal, Fredrick Tamooh, Duc A. Trinh, Wendell Walters, Nina Welti
Summary: The isotopic data of nitrate in global rivers and shallow aquifers reveal differences in nitrate concentrations and nitrogen isotope composition between the two water bodies. Water temperature plays a role in affecting the isotopic composition of nitrate, with waste-related nitrogen source signals being more prominent in colder seasons. Isotopic assays are crucial for understanding nitrate pollution and informing effective agricultural and land management strategies.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
