Identification

Title

Geologic Map of Minnesota - Bedrock Geology (MGS Map S-21)

Abstract

This map is a new construct that incorporates existing geologic maps where prior mappers had adequate ground control, and new interpretations based on drill hole, geophysical, and unpublished data where they did not. The interpretation differs significantly from previous maps to reflect new data and accommodate scale. It portrays our current geologic understanding of the temporal and geographic distribution of units within major Precambrian terranes and of the Phanerozoic strata. The western part of the mapped Precambrian terrane is inferred largely from geophysical maps, anchored locally by drilling. In many places, contacts are drawn between units of the same or similar apparent rock type (and same unit label); these are recognized as geometrically distinct, though geophysically or lithologically similar. Digital files corresponding to this map allow removal of Cretaceous, Paleozoic, and some parts of Mesoproterozoic strata to reveal an interpretation of the underlying Precambrian bedrock. Note: This publication supersedes the bedrock geologic map elements of MGS Open-File OF10-02. Other components of OF10-02 are still valid, including the state-wide maps of bedrock topography, depth to bedrock, and outcrop locations, and the geochronology shapefiles.

Resource type

dataset

Resource locator

Unique resource identifier

code

codeSpace

Dataset language

Spatial reference system

code identifying the spatial reference system

Additional information source

Minnesota, statewide

Classification of spatial data and services

Topic category

Keywords

Geographic location

West bounding longitude

-97.23

East bounding longitude

-89.53

North bounding latitude

49.37

South bounding latitude

43.5

Temporal reference

Temporal extent

Begin position

End position

Dataset reference date

date type

publication

effective date

2011-01-01

Frequency of update

unknown

Quality and validity

Lineage

This lineage was generated by the FGDC CSDGM to 19139 transformation

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Constraint set

Limitations on public access

Use Constraints: Credit given to the Minnesota Geological Survey. Suggested Citation: Jirsa, Mark A.; Boerboom, Terrence J.; Chandler, V.W.; Mossler, John H.; Runkel, Anthony C.; Setterholm, Dale R. (2011). S-21 Geologic Map of Minnesota-Bedrock Geology. Minnesota Geological Survey. Retrieved from the University of Minnesota Digital Conservancy, http://purl.umn.edu/101466.

Constraint set

Limitations on public access

Access Constraints: None.

Responsible organisations

Responsible party

contact position

Geologic Information Systems

organisation name

Minnesota Geological Survey

full postal address

2609 Territorial Road

St. Paul

55114

telephone number

612-626-3103

email address

lively@umn.edu

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

contact position

Geologic Information Systems

organisation name

Minnesota Geological Survey

full postal address

2609 Territorial Road

St. Paul

55114

telephone number

612-626-3103

email address

lively@umn.edu

responsible party role

pointOfContact

Metadata date

2015-09-01

Metadata language