RFG 2018 Conference

GeoWord of the Day

The GeoWord of the Day is a free service of the American Geosciences Institute. All of the terms and definitions are from the Glossary of Geology, 5th Edition Revised.

Subscribe via EMail to the GeoWord of the Day.


laforêtite . A metallic brown tetragonal mineral of the chalcopyrite group: AgInS2.

shell bank . A bank [sed] consisting largely of shells, esp. of corals and pelecypods.

influent seepage . Movement of gravity water in the unsaturated zone , from the ground surface toward the water table; seepage of water into the ground.

lukrahnite . A yellow triclinic mineral of the helmutwinklerite group: Ca(Cu,Zn)(Fe3+,Zn)(AsO4)2(OH,H2O)2.

corrugated lamination (cor'-ru-gat''-ed). A form of convolute bedding that differs from convolute lamination in that the lamination is intricately contorted and does not show a regular subparallel orientation of anticlines and synclines.

corrugated lamination (cor'-ru-gat''-ed). A form of convolute bedding that differs from convolute lamination in that the lamination is intricately contorted and does not show a regular subparallel orientation of anticlines and synclines.

radiance (ra'-di-ance). Radiant flux per unit solid angle per unit area.

Hemphillian (Hemp-hil'-li-an). North American land mammal age: Late Miocene (after Clarendonian, before Blancan).

pressure surface . A less-preferred syn. of potentiometric surface.

polyquartz (pol'-y-quartz). A group term for Al(PO4), Al(AsO4), B(PO4), etc.

Pages

Subscribe to GeoWord of the Day