Espanola Basin  |
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| RT | New Mexico | | | Rio Grande Rift | | SN | N New Mexico. Indexed with counties or region as applicable. Added to Thesaurus in 1985. |
ESR  |
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| SN | Not a valid term for GeoRef. For electron spin resonance, see electron paramagnetic resonance or EPR spectra. |
estimation  |
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| SN | Used as a general term through 1977. After 1977, see evaluation for economic studies. |
estone#Barnwell Formation#Blue Ridge Mountains#Blue Ridge Province#Blufftown For  |
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Estrada Nova Formatio  |
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estuarine  |
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| SN | A valid term through 1977. After 1977, use estuaries or (as of 1981) estuarine environment or estuarine sedimentation. |
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