Table Name |
Field Name |
Begin Column |
Definition |
Valid Values |
Descriptions |
millobmodl.dbf |
Modl_ID |
|
Number, 4, 0 |
Ex: 25 |
Unique identifiers used
in the database |
|
Modl_Sourc |
|
Text, 50 |
|
Specific source the
data was gathered from. See metadata
for detail about each source. |
|
|
|
|
CWI-MGS Located |
Well that contains
bedrock or minima information located by the Minnesota Geological Survey
(MGS) |
|
|
|
|
CWI-DNR Located |
Well that contains
bedrock or minima information located approximately by the Minnesota
Department of Natural Resources, Division of Lands and Minerals (See Metadata
for Specific Locating Methodology) |
|
|
|
|
Field Observation |
MN DNR observed granite
bedrock outcrops |
|
|
|
|
Drilling-MGS |
Drill holed by MGS that
encountered bedrock |
|
|
|
|
Drilling-Explorer |
MN DNR Exploratory
drill hole that encountered bedrock |
|
|
|
|
MGS Outcrop |
MGS observed bedrock outcrop |
|
|
|
|
USDA/NRCS - Outcrop |
Soil Survey observed
bedrock outcrop |
|
Surf_Elev |
|
Number, 4, 0 |
Ex. 1250 |
Surface elevation
(feet) of data point, calculated from 30 Meter DEM or extracted from CWI data
if available |
|
Overburden |
|
Number, 4, 0 |
Ex. 100 |
The data point’s depth
to (In Feet) hard bedrock or minima interpreted from the CWI stratigraphy
table or from the MGS and Exploratory drilling database. Outcrop points values equal ‘0’. |
|
Modl_Elev |
|
Number, 4, 0 |
Ex. 1150 |
The model’s hard
bedrock and minima elevations (Surf_Elev – Overburden) |
|
Geo_Desc |
|
Text, 75 |
Ex. Granite – Dk.
Gray/Hard |
A geologic description
of bedrock and minima data taken directly from CWI stratigraphy (i.e., Material
– Color/Hardness). If source of point
was an outcrop, the description further defines the source. |
|
Bdrk_Conf |
|
Text, 3 |
Ex. Yes/No |
A yes/no record
answering the question, did the well drilled hit hard bedrock. |
|
Confidence |
|
Text, 10 |
|
Confidence class (high,
moderate, low) of data point accuracy related to actual location. |
|
|
|
|
High |
It is probable that the
point location is within 0-5 acres of actual location. |
|
|
|
|
Moderate |
It is probable that the
point location is within 0-40 acres of actual location |
|
|
|
|
Low |
It is probable that the
point location is within 0-160 acres of actual location |
|
Relateid |
|
Text, 10 |
Ex. 0000645232, Not CWI |
These are the unique
identifiers for the CWI wells (Relate item with millcwistrat.dbf). An overburden point with ‘Not CWI’ can not
be used to relate to millcwistrat.dbf |