Examlex
Most of the elements heavier than helium were made during the first few minutes after the big bang.
Dropstones
Large stones or boulders that have been dropped into sedimentary deposits by glaciers, icebergs, or other floating ice.
Isotopic Compositions
The relative abundances of isotopes of a particular element within a sample, which can provide insights into the age, origin, and history of rocks, ice cores, and other natural materials.
Ocean Currents
Large-scale movements of water within the oceans, driven by factors such as wind, temperature, salinity, and the Earth's rotation.
Glaciation
The process, condition, or result of being covered by glaciers or ice sheets, affecting landscapes through erosion and deposition.
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