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Florida Geological Survey

Greenbook Index

The Florida Geological Survey holds a collection of 150 binders known as "Greenbooks," which contain historic drillers' logs and lithologic descriptions from boreholes W-1 through W-17999, wgi-1 through wgi-3203 and auger samples AS-2 through AS-352. 

Additional descriptions can be found in this collection for select boreholes between W-18000 through W-18987. 

FGS Near-Surface Geophysical Capabilities

Geophysics is the subsurface site characterization of the geology, geological structure, groundwater, contamination, and human artifacts beneath the Earth's surface, based on the lateral and vertical mapping of physical property variations that are remotely sensed using non-invasive technologies (EEGS, 2022). Near-surface geophysics employ noninvasive methods for collecting data about the shallow (tens of meters) subsurface.

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