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Lexicon of Canadian Geologic Units

Submission form for proposed or missing published geological units

*** Required fields are in red ***

Status of unit:

Unit category:

(Required for members and beds which must belong to a formation, group, lithodeme, suite or complex. If this is a new unit, please check the 'New unit:' checkbox and complete another 'New Submission' entry for this unit)


Existing units - full reference to first definition and any revisions;
Proposed units - reference to planned publication containing their description

Age: maximum and minimum age in chronostratigraphic units as precisely as possible

Click to expand/contract/select age. From keyboard, use right/left arrow to expand/contract tree, up/down arrow and Enter to select/deselect age.

Select age from age tree. After selecting age,
click appropriate button (Min Age / Max Age) to make your entry.


Directly enter max age and min age.


Or absolute age if known (with error, material, method, and technique)

Geographic Extent(s)

Contact information: your contact information.

Any personal information collected by Natural Resources Canada, whether in print or electronic format, is protected under the Privacy Act.

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