Results 101 to 110 of about 5,732,959 (308)

Kisameet Glacial Clay: an Unexpected Source of Bacterial Diversity

mBio, 2017
Widespread antibiotic resistance among bacterial pathogens is providing the impetus to explore novel sources of antimicrobial agents. Recently, the potent antibacterial activity of certain clay minerals has stimulated scientific interest in these ...
Sarah L. Svensson, Shekooh Behroozian, Wanjing Xu, Michael G. Surette, Loretta Li, Julian Davies   +5 more
doaj   +1 more source

Geochemical characteristics and hydrocarbon expulsion of source rocks in the first member of the Qingshankou Formation in the Qijia‐Gulong Sag, Songliao Basin, Northeast China: Evaluation of shale oil resource potential

Energy Science & Engineering, 2020
In recent years, there has been significant progress in shale oil exploration in the first member of the Qingshankou Formation (K2qn1) in the Qijia‐Gulong Sag, Songliao Basin, Northeast China: It shows good prospects for shale oil.
Zhipeng Huo, Shibo Hao, Bo Liu, Jinchuan Zhang, Jianghui Ding, Xuan Tang, Changrong Li, Xiaofei Yu   +7 more
doaj   +1 more source

The comparison of geochemical characteristics of Fe, Co, Ni

, 2005
The purpose of this paper is to compare the geochemical characteristics of iron, manganese, nickel and cobalt.
Kubínová, Petra
core  

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source

Geochemical characteristics and paleoenvironmental significance of karst reservoirs in Gaoyuzhuang-Wumishan Formations of Jixian System in Xiong ‘an New Area and its adjacent areas

Frontiers in Earth Science
A set of thick carbonate rocks is developed in Gaoyuzhuang-Wumishan Formations of Jixian System in Xiong ‘an New Area and its adjacent areas, with diverse dolomite rock types, complex reservoir space, and large differences in physical properties, which ...
Guoquan Nie, Guoquan Nie, Guoquan Nie, Qingyu Zhang, Qingyu Zhang, Dengfa He, Xiaopan Li, Xiaopan Li, Shaocong Ji, Shaocong Ji   +9 more
doaj   +1 more source

Ichnology of the Rhätsandstein in the Exter Formation (Triassic), Germany

Geological Journal, EarlyView.
Trace fossils from the Rhätsandstein of southern Germany record repeated colonization of high‐energy shallow‐marine substrates before the Triassic–Jurassic transition. The assemblage reflects environmental and preservational controls on ichnodiversity.
Daniel Sedorko, James H. Nebelsick
wiley   +1 more source

Zircon U-Pb age, geochemical characteristics, and tectonic implications of the early Permian ultrabasic dykes in the Harlik Mountain, east Tianshan, Xinjiang

Dizhi lixue xuebao
Objective  During multiple stages of magmatic activity in the Harlik Mountains of the east Tianshan, extensive granitic and mafic dyke swarms were formed.
DU Xiaofei, WANG Wei, ZHANG Chuanlin, MA Huadong, ZHU Bingyu, QIU Lin   +5 more
doaj   +1 more source

Quantifying the Distribution Characteristics of Geochemical Elements and Identifying Their Associations in Southwestern Fujian Province, China

, 2020
The distribution of geochemical elements in the surficial media is the end product of geochemical dispersion under complex geological conditions. This study explored the frequency and spatial distribution characteristics of geochemical elements and their
Jian Wang, Renguang Zuo
core   +1 more source

Hybrid Machine Learning–Geostatistical Modeling of Soil Quality in Saline–Sodic Soils Under Arid Agroecosystems of Northwestern Peru

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Soil fertility management in mango and banana production systems in northern Peru is limited by marked spatial heterogeneity, driven by chemical imbalances, particularly salinity, alkalinity, and sodicity. Aim This study developed a spatial predictive framework to assess soil quality across the agricultural area of Morropón Province,
Sebastian Casas‐Niño, Gerson La Rosa Lama, Sharon Mejia, Ruth Mercado, Kenyi Quispe   +4 more
wiley   +1 more source

The Geochemical Characteristics and Exploitation Threshold of Copper in the Cultivated Soils of Guanzhong Plain, Shaanxi Province

Agronomy
Moderate copper (Cu) intake is beneficial for human health; however, China has not established recommended Cu levels in major food crops and their cultivation lands.
Yuchen Yan, Zhongfang Yang, Shengfei Yang, Anmin Xu, Duoxun Xu   +4 more
doaj   +1 more source