https://www.usgs.gov/publications/new-evidence-a-pliocene-marine-embayment-along-lower-colorado-river-area-california
Marine foraminiferal, marine to fresh-water molluscan, and brackish- to fresh-water ostracode faunas occur in a thick section of limestone, silt, and clay of...
new evidencefor apliocenemarineembayment
https://www.usgs.gov/centers/lower-mississippi-gulf-water-science-center/science/national-water-quality-assessment-nawqa
The National Water-Quality Assessment (NAWQA) Program is designed to describe the status and trends in the quality of the Nation's surface-water and...
water qualitymississippi embaymentnationalassessmentprogram