Global Geochemical Baseline

A Global Geochemical Baseline is a comprehensive reference map or dataset that shows the normal levels of chemical elements and compounds found naturally in Earth's environment—such as soil, water, or sediment—at a global scale. It helps scientists distinguish between natural background levels and changes caused by human activities or pollution. By understanding these natural baselines, researchers can better detect environmental contamination, assess ecological health, and guide sustainable resource management around the world. Essentially, it provides a standard to compare current geochemical data against the Earth's natural chemical state.