A5051574626- Geology and Paleoclimatology Research
- Geomagnetism and Paleomagnetism Studies
- Geological formations and processes
- Geochemistry and Elemental Analysis
- Iron oxide chemistry and applications
- Magnetic and Electromagnetic Effects
- Geological and Geophysical Studies
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Environmental and Agricultural Sciences
- Groundwater and Isotope Geochemistry
- Aeolian processes and effects
- Meteorological Phenomena and Simulations
- CO2 Sequestration and Geologic Interactions
- Karst Systems and Hydrogeology
- Geochemistry and Geologic Mapping
- Geophysics and Gravity Measurements
- Climate variability and models
Southwest University
2011-2024
University of Córdoba
2014
Nanjing University
2011
The homeostatic balance of Earth's long-term carbon cycle and the equable state climate are maintained by negative feedbacks between levels atmospheric CO2 chemical weathering rate silicate rocks. Though clearly demonstrated well-controlled laboratory dissolution experiments, temperature dependence rates, hypothesized to play a central role in these feedbacks, has been difficult quantify natural settings at landscape scale. By compiling data from basaltic catchments worldwide considering...
[1] The iron oxide content of soils and sediments controlled by weathering pedogenesis is generally considered a reasonable indicator climate. Previous studies in temperate zones have established positive correlation aerobic between ferrimagnets low to moderate rainfall; the seems be reversed under extreme climates with high rainfall. Here we present transect saprolitic from Hainan Island, South China, rainfall (1440∼2020 mm/yr), little temperature variation (23∼24°C), weathering. Along this...
Abstract Soil magnetism depends on the mineral composition and grain size distribution of magnetic particles. The accumulation particles with different sizes has been found in laboratory to precede formation hematite (Hm), which competes goethite (Gt) natural systems. To explore changes correlation between Hm during pedogenesis, we focus three representative red Ferrasol profiles comparable total concentrations iron oxides but Hm/(Hm + Gt) ratios, from 0.14 0.74. Superparamagnetic...
Abstract Goethite/hematite ratios in soils are widely used to reconstruct past climatic changes, but their accurate measurements have remained challenging due the matrix effect. Here we present a new method for measuring soil goethite/hematite by characterizing band position of electron pair transition (EPT) based on diffuse reflectance spectra processed continuum removal. We introduce “half‐band‐area wavelength”, λ 1/2 , characterize EPT and validate using synthetic standards made from...
Abstract Magnetic iron oxides are commonly enriched in soils and sediments on Earth's surface. properties widely employed soil taxonomy, sediment tracing paleoclimate reconstruction as indicators of associated pedogenic depositional processes. However, coastal regions, frequent shifts pedogenesis diagenesis accompanied by changes hydrodynamic geochemical conditions from land to sea can influence the formation preservation magnetic particles sequences. To discern origin nature driven these...
Abstract Ferrimagnetic (FM) and antiferromagnetic (AFM) iron oxide particles are considered pedogenic climatic indicators due to their enrichment with comparable increasing in rainfall temperature. However, the opposite changes temperature result rapid change of relative humidity (RH), which could lead competition transformation. We examined two soil sequences have undergone contrary climate development on eastern edge Tibetan Plateau. Dry warm low RH favors coordinative AFM hematite FM...
Abstract Here we present new data from Chinese basaltic catchments that experience monsoonal climate. The weathering rates of fields roughly agree with the previously established law basalt includes controls both runoff and temperature. However, find out temperature alone might explain variability if active inactive volcanic are separated.
Abstract Magnetic particles associated with iron (Fe) oxides are widespread on the surface of Earth and Mars serve as reasonable climatic indicators. Ferrimagnetic maghemite (Mgh) antiferromagnetic hematite (Hm), which dominate magnetism redness, often coexist or compete each other in soils sediments. The formation efficiency Mgh relative to Hm could be modulated by geochemical background besides climate, especially phosphate (P), has a high affinity for surfaces precursor natural systems....
Earth and Space Science Open Archive This work has been accepted for publication in Geophysical Research Letters. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Different enrichment patterns pedogenic magnetic particles modulated primary iron-phosphorous inputAuthors Juan Ren Xiaoyong Long iD Junfeng Ji Vidal Barrón José Torrent...
Earth and Space Science Open Archive This work has been accepted for publication in Geophysical Research Letters. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing the latest version by default [v1]Different enrichment patterns magnetic particles modulated primary iron-phosphorous inputAuthorsJuanRenXiaoyongLongiDJunfengJiVidalBarrónJoséTorrentiDYongWangShiyouXieSee...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Science. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing an older version [v1]Go new versionCoordination competition between magnetic particles driven by opposite climate transitionsAuthorsYunfengCaiiDXiaoyongLongiDXianqiangMengiDJunfengJiYongWangShiyouXieSee all authors Yunfeng CaiiD•...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Geophysical Research Letters. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v2]Coordination competition between soil magnetic particles driven contrary climate developmentAuthorsYunfengCaiiDXiaoyongLongiDXianqiangMengiDJunfengJiYongWangShiyouXieSee all...