China University of Geosciences (Beijing)

Effect of calcined lithium slag, copper tailings and tungsten tailings on the properties and microstructure of hybrid cements

The effects of desulfurized gypsum (DG) activation on the performance and hydration microstructure of composite materials were investigated, with calcined lithium slag (LS), copper tailings (CT), and tungsten tailings (TT) powders employed as supplementary cementitious materials...

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images rev...

Tectonic escape from the Pangean megamonsoon via oceanic isolation modulated low-latitude hydroclimate

The assembly of the Pangea supercontinent during the late Paleozoic ice age drove Earth’s most intense megamonsoon. Although climate models predict a humid low-latitude eastern Pangean margin, widespread red-bed records indicate extreme seasonal oxidation, creating a conspicuous...

Three-dimensional magnetotelluric Bayesian inversion based on Stein variational gradient descent

Summary To address the challenge of assessing the reliability of three-dimensional (3D) magnetotelluric (MT) inversion results, we have developed a variational inference (VI) inversion framework (VI-MT) based on the Stein Variational Gradient Descent (SVGD) method. Through parall...

Predictive analysis of construction accident outcomes using explainable artificial intelligence and evidence fusion techniques

Purpose Effective construction safety management relies on interpretable information to guide practitioner interventions. However, most current predictive models are “black boxes” that provide limited insight into the complex, multifactor causal mechanisms of accidents. Therefore...

Potential Source-to-Sink Spatial Correspondence in a Martian Analog Environment of the Qaidam Basin Based on GF-5A Hyperspectral Imagery

Alluvial fan source-to-sink (S2S) systems in Mars-analog environments are crucial for investigating planetary surface processes. However, traditional S2S analyses lack continuous regional coverage and topographic physical constraints. This study integrates GF-5A spaceborne hypers...

Water-Induced Shear-Strength Degradation of Coal-Measure Rocks and Its Engineering Implications: A Case Study of the Fushun West Open-Pit Mine, China

Slopes excavated in coal-measure strata are prone to rainfall-induced landslides because water-induced disturbances progressively degrade rock-mass shear strength. This study investigated six coal-measure lithologies from the unloading zone of the Fushun West Open-Pit Mine using...

Evaluation of Passive Seismic Imaging by Comparison with Active-Source Results in the Larsemann Hills, Antarctica

Abstract In Antarctica, more than 98% of the continent is covered by ice sheets. Seismic exploration is recognized as one of the most effective methods for high-resolution imaging of ice sheets and the underlying bedrock. However, conducting active-source seismic surveys remains...

Vertical Heterogeneity of Deep Carboniferous Coal Reservoirs in the Northern Part of the Eastern Margin of the Ordos Basin

Deep coalbed methane (CBM) is an important frontier for expanding unconventional natural gas reserves and production in China. Significant vertical heterogeneity in coal reservoirs is a primary constraint on exploration and development, and the conventional interval subdivision b...

Dispersion Equations of Scholte Waves for Inclined Multi-layered Seabed

Abstract Scholte waves are surface waves that propagate along a fluid-solid interface and arise from the interference of P- and SV-waves. The conventional dispersion equations for surface waves are typically derived under the assumption of horizontal interfaces, and cannot be app...

Odometry and Mapping for Complex Environment Perception Under Partial-View Sensing

Dense partial-view LiDAR observations are attractive for outdoor perception, but limited overlap and viewpoint sensitivity make odometry and mapping less reliable than with spinning LiDARs. Many recent algorithms for this sensing regime are built as LiDAR-inertial odometry framew...

Tracking Variability in Atmospheric, Oceanic, and Riverine Inputs to the Iberian Margin Over the Last 250 kyr

Abstract The Iberian Margin provides an exceptional archive of climate variability due to its high sedimentation rates. However, uncertainties persist regarding the provenance of terrigenous detrital sediments on the Iberian Margin, and the climate‐driven changes in their source...

Cross-scale Data-Driven Heat Flow Prediction in the Ordos Basin and Adjacent Areas: An XGBoost Model with SHAP Interpretability

Summary Terrestrial heat flow is a fundamental parameter characterizing the thermal regime of sedimentary basins, but sparse and unevenly distributed measurements limit regional heat flow mapping. This study integrated cross-scale geological and geophysical features to compare XG...

Genesis of Gem-Quality Peridot from Sapat, Pakistan: Constraints from Gemmology, Mineralogy, and Geochemistry

Pakistan is recognized as a notable source of gem-quality peridot, which is renowned internationally for its attractive yellowish-green to light greenish-yellow color and large crystal size. This paper elucidates the petrogenesis of Pakistani peridot based on coupled gemological,...

Identification of phenology-aligned sensitive windows to extreme-rainfall events for maize in north China Plain and actionable irrigation–drainage triggers

Agricultural water-risk assessment requires the identification of exposure windows that accurately capture extreme rainfall during crop-sensitive stages. Using county-level data from the North China Plain from 2001 to 2015, phenology-aligned exposure windows were reconstructed an...

Fluorination‐Driven Homogeneous Strategy for High‐Performance Tribo‐Piezoelectric Hybrid Nanogenerators

ABSTRACT Electrospun PVDF‐based tribo‐piezoelectric hybrid nanogenerators (TPHGs) exhibit potential in the domain of self‐powered sensing, owing to their high output performance and flexibility. However, simultaneously optimizing both piezoelectric and triboelectric outputs remai...

A New Understanding of Stratigraphic Development in Subsurface Arid Alluvial Fans: Implications From the Northwest Margin of the Junggar Basin, China

ABSTRACT Alluvial fans are common sedimentary deposits on Earth and serve as crucial reservoirs for underground oil and gas. However, our understanding of the stratigraphic development and sedimentary evolution of different alluvial fan types remains limited. This study examines...

Sequence Stratigraphic Framework and Coal Accumulation of the Lopingian Longtan Formation in the Sichuan Basin, South China

ABSTRACT The Lopingian Longtan Formation in the Sichuan Basin is a representative coal‐bearing succession deposited in a marine–continental transitional setting. Pronounced lateral variability in depositional environments and the subtle expression of sequence‐stratigraphic surfac...

Unveiling the new round of trade-in policies in China: an “objectives-tools-targets” analysis framework

Trade-in policies play an important role in advancing sustainable consumption in China, but their sustained effectiveness still faces obstacles. This study constructs a trade-in policy mix analysis framework, which integrates the three dimensions of policy objectives, tools and t...

Observations of groundwater-surface water exchange effects on emerging pollutants in a subtropical catchment

The occurrence of emerging pollutants (EPs) in aquatic environments is a major threat to natural ecosystems and human health, but the connections between EPs in surface water and groundwater have been largely unexplored. Here, a total of 38 EPs, including antibiotics, per- and po...