Difference between relative and radiometric dating of fossils dating for attractive people
banded iron formation - Rock consisting of alternating light and dark layers of iron-rich chert (hematite and limonite) formed approximately 3,800 million years ago.bank - The land alongside or sloping down to a river or lake.astrobleme - A circular erosional feature that has been ascribed to the impact of a meteorite or comet.atmosphere (unit) - A unit of pressure equal to 101,325 newtons per square meter, or about 14.7 pounds per square inch.
bar - A unit of pressure equal to 10 to the sixth dynes/square centimeter; approximately one atmosphere.
aeolian process - A geological modification, such as sand dunes or erosion, caused by wind activity. algal mat - A layered communal growth of algae observed in fossils and in present day tidal zones associated with carbonate sedimentation.
alkali metal - A strongly basic metal like potassium or sodium.
allochthonous - Refers to something formed elsewhere than its present location. alluvial fan - An alluvial fan is a triangular-shaped deposit of sediment at the point where a river emerges from a mountainous area and flows onto a more gently sloping plain.
alluvium - Sediment of sorted or unconsolidated sand, gravel, and clay that has been deposited by flowing water.