Gordon Williams

Journal Article The Science of the total environment · November 2024 The global green energy transition has spurred increased lithium exploration and extraction, yet the water quality impacts from lithium mining are understudied. This study investigates the potential water quality impacts from a legacy hard-rock lithium min ... Full text Cite

Reconstructing the depositional environment and diagenetic modification of global phosphate deposits through integration of uranium and strontium isotopes

Journal Article Chemical Geology · September 5, 2024 The geochemistry of phosphate rocks can provide valuable information on their depositional environment and the redox condition of global oceans through time. Here we examine trace metal concentrations and uranium (δ238U, δ234U) and strontium (87Sr/86Sr) is ... Full text Cite

Tracing the Environmental Effects of Mineral Fertilizer Application with Trace Elements and Strontium Isotope Variations

Journal Article Environmental Science and Technology Letters · June 11, 2024 Fertilizer utilization is critical for food security. This study examines the occurrence of trace elements (TEs) and Sr isotope (87Sr/86Sr) variations in phosphate rocks and mineral fertilizers from a sample collection representative of major phosphate pro ... Full text Cite

Evidence for the accumulation of toxic metal(loid)s in agricultural soils impacted from long-term application of phosphate fertilizer.

Journal Article The Science of the total environment · January 2024 Phosphate fertilizers may contain elevated concentrations of toxic metals and metalloids and therefore, their excessive application can result in the accumulation of both phosphorus (P) and metal(loid)s in agricultural soils. This study aims to investigate ... Full text Cite

Lead isotopes and rare earth elements geochemistry of global phosphate rocks: Insights into depositional conditions and environmental tracing

Journal Article Chemical Geology · November 20, 2023 Phosphate rock bears both geologically and environmentally significant information. Rare earth elements and yttrium (i.e., REY) characteristics have been commonly used for reconstructing the redox conditions of depositional environments and the effects of ... Full text Cite

Response to comments on Vengosh et al. (2022): The strontium isotope fingerprint of phosphate rocks mining.

Journal Article The Science of the total environment · April 2023 Full text Cite

The strontium isotope fingerprint of phosphate rocks mining.

Journal Article The Science of the total environment · December 2022 High concentrations of metal(loid)s in phosphate rocks and wastewater associated with phosphate mining and fertilizer production operations pose potential contamination risks to water resources. Here, we propose using Sr isotopes as a tracer to determine p ... Full text Open Access Cite

Seismology with dark data: Image-based processing of analog records using machine learning for the rangely earthquake control experiment

Journal Article Seismological Research Letters · March 1, 2019 Before the digital era, seismograms were recorded in analog form and read manually by analysts. The digital era represents only about 25% of the total time span of instrumental seismology. Analog data provide important constraints on earthquake processes o ... Full text Cite