Carbonates in the critical zone

MD Covington, JB Martin, LE Toran… - Earth's …, 2023 - Wiley Online Library
Abstract Earth's Critical Zone (CZ), the near‐surface layer where rock is weathered and
landscapes co‐evolve with life, is profoundly influenced by the type of underlying bedrock …

A Review of Heavy Metal Migration and Its Influencing Factors in Karst Groundwater, Northern and Southern China

W Zhang, C Xin, S Yu - Water, 2023 - mdpi.com
With the substantial increase in karst groundwater pollution, the pollution caused by heavy
metal migration has become one of the hottest topics. The migration characteristics of heavy …

Sources and migration of heavy metals in a karst water system under the threats of an abandoned Pb–Zn mine, Southwest China

W Qin, D Han, X Song, S Liu - Environmental pollution, 2021 - Elsevier
Water quality is of great concern under the threats of an abandoned Pb–Zn mine within a
vulnerable karst area. This study focuses on tracing the sources, migration and relevant …

Environmental isotopes (δ18O, δ2H, 222Rn) and hydrochemical evidence for understanding rainfall-surface water-groundwater transformations in a polluted karst …

W Qin, D Han, X Song, S Liu - Journal of Hydrology, 2021 - Elsevier
The vulnerable karst water systems and the serious pollution issues in Southwest China
have been facing tremendous challenges, especially when controlling processes of …

Trace elements in modern and archaeological human teeth: Implications for human metal exposure and enamel diagenetic changes

GD Kamenov, EM Lofaro, G Goad… - Journal of Archaeological …, 2018 - Elsevier
The chemical composition of human tooth enamel from individuals born at different times
and/or different geographical places can provide a record of human metal exposure through …

Methane cycling in the carbonate critical zone

A Oberhelman, JB Martin, MK Flint - Science of The Total Environment, 2023 - Elsevier
The carbonate critical zone (CZ) is characterized by extensive groundwater-surface water
exchange that leads to highly variable redox states of groundwater. Changes in redox …

Groundwater‐surface water interaction, dissolved organic carbon oxidation and dissolution in carbonate aquifers

A Oberhelman, JB Martin… - Earth Surface Processes …, 2024 - Wiley Online Library
The high primary porosity and permeability of eogenetic karst aquifers permit water
recharged through secondary dissolution features to be temporarily stored in aquifer matrix …

Effects of surface water interactions with karst groundwater on microbial biomass, metabolism, and production

A Barry-Sosa, MK Flint, JC Ellena, JB Martin… - …, 2024 - bg.copernicus.org
Unearthing the effects of surface water and groundwater interactions on subsurface
biogeochemical reactions is crucial for developing a more mechanistic understanding of …

Evolution of carbonate and karst critical zones

PL Sullivan, GL Macpherson, JB Martin, RM Price - Chemical Geology, 2019 - Elsevier
Carbonate terrains (CT) underlie one-fifth of terrestrial, ice-free land and are an important
supply of potable water to the world's population, and yet processes endemic to CT critical …

Statistical evidence of recharge and supply controlling nitrate variability at springs discharging from the upper Floridan Aquifer

P Spellman, J Gulley, A Pain, M Flint, S Kim… - Science of The Total …, 2022 - Elsevier
Over the last several decades, rising nitrate concentrations in springs discharging from north
Florida's karstic Upper Floridan Aquifer have coincided with proliferation of algae in Florida …