1. of, relating to, or containing glauconite (a greenish mineral composed of hydrous silicates of iron and potassium, commonly found in sedimentary rocks)
Usage: geology; technical

Examples

• The glauconitic sandstone formations along the coast are rich in marine fossils.
• Geologists identified glauconitic layers in the core sample from the drilling site.
• The greenish color of the glauconitic sediment indicates the presence of iron-rich minerals.
• Glauconitic rocks are often used as indicators of ancient marine environments.
• The glauconitic deposits in this region date back to the Cretaceous period.