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Zijinshan Copper Mine
Zijinshan Copper Mine (紫金山铜矿) is a large open-pit and underground gold-copper mine in Shanghang County, Longyan, Fujian Province, China, owned by Zijin Mining Group and discovered in the 1980s.
Zimina
Zimina (Зимина) is an extinct volcanic massif of merged stratovolcanoes, 3,057-3,081 m, at the southeastern end of the Klyuchevskaya volcano group in Kamchatka, Russia; no Holocene eruptions are known.
Zinkgruvan
Zinkgruvan, meaning "the zinc mine," is an underground zinc-lead-silver mine in Askersund Municipality, Sweden, in continuous operation since 1857 and owned by Boliden since 2025.
Zircon
Zircon, also known as zirconium orthosilicate, is a natural zirconium silicate mineral, ZrSiO4, the principal source of zirconium and hafnium and a gemstone prized for its fire.
Zircon geochronology
Zircon geochronology is a dating method that determines the ages of rocks by measuring uranium-lead isotope ratios in zircon crystals, which exclude lead when they form.
Zircon U–Pb dating
Zircon U–Pb dating is a geochronological method that measures uranium-to-lead isotope ratios in zircon crystals, dating igneous rocks and sediments with internal consistency checks from two decay chains.
Zirconolite
Zirconolite is a rare calcium zirconium titanium oxide mineral, ideally CaZrTi₂O₇, first described in 1956 from Russia's Kola Peninsula and proposed as the main actinide-hosting phase in SYNROC nuclear wasteforms.
Zitacuaro-Valle de Bravo
Zitacuaro-Valle de Bravo is a monogenetic volcanic field in central Mexico's Trans-Mexican Volcanic Belt, covering shield volcanoes, lava domes, and cinder cones near Zitacuaro and Valle de Bravo.
Zogg Fire
The Zogg Fire was a 2020 California wildfire that began near Igo in Shasta County, burned 56,338 acres in Shasta and Tehama counties, killed four civilians, and was caused by a pine tree contacting PG&E powerlines.
Zonal wave 3
Zonal wave 3 (ZW3) is a quasi-stationary atmospheric circulation pattern of the Southern Hemisphere extratropics with three ridges and troughs, influencing Antarctic sea ice, blocking, and dense water formation.
Zooplankton grazing
Zooplankton grazing is the consumption of phytoplankton and bacteria by planktonic animals, one of two principal controls on algal biomass, shaping water clarity and bloom dynamics.