Stratigraphy

 

 

Stratigraphy

The Stratigraphy table is intended to contain data on the geologist’s or hydrogeologist’s interpretation of stratigraphic units.  There are a number of things that should be kept in mind when constructing the Stratigraphy table. 

 

1.Unit intervals must lie in the same order from top to bottom in every well.  You cannot for example have strata AQ1 over AQ2 at well MW1 and AQ2 over AQ1 at well MW2.

2.If a particular unit is missing at a well then it will be interpreted as if it had a zero thickness.

3.When generating a borehole, missing units at the bottom of a borehole will use the interpolated thickness values based on other boreholes.  This is useful in cases where shallow boreholes only penetrate the shallowest units.

Field Name

Description

Data Type

Must be Populated?

Location

Unique location id

Text String

Yes

Strata

Description of stratigraphic unit

Text String

Yes

Top Elevation or Top Depth

Elevation of or depth of top of soil interval

Numeric - Floating Point

Yes

Bottom Elevation or Bottom Depth

Elevation of or depth of bottom of soil interval

Numeric - Floating Point

Yes