ArkeoGIS allows the users to choose a chronology (among many chronologies in different languages) in their personal project in order to build their queries. Those chronologies can also help the users to upload their databases. The administrators and the members of the different working groups about the chronologies can access to an online editor through the list of chronologies. At any time, they can add or edit a chronology on the platform.


The “+” sign at the top right of the table allows the user to create a new chronology thanks to the chronoditor tool.
The available chronologies are presented in a table. Each column’s title can be used to organize the table.
Initially, the chronologies are classified in reverse chronological order. The chronology with the latest date of creation is on the first line.
The titles and contents of the columns are the following:
Name/description: The database’s name in orange is a link to the chronoditor for this chronology. In the description, the geographical scope of the chronology is indicated.
Author(s)/credits: The members of the eponymous working group. They can edit and update the chronology.
Languages: The initials of the languages in which the chronology is available for users. At least 2 languages (English must be one of them).
Date of creation: Date of the first record in one language.
Period: The earliest and latest date determine the period covered by the chronology.
Published: The chronology is published which means that users can choose it in their project. A chronology can only be published if it’s completed and written in at least two of the four languages available (German, English, Spanish and French).
At the bottom right of the table are proposed several tools to handle it: number of the page displayed, number of lines per page, number of lines displayed on overall.
The information displayed on this screenshot is the one available on the ArkeoGIS’ app on the 1st of January 2017.
The language’s name and flag visible on the top right of the table allow the user to change it during the edition of the chronology.
The menu on the left allows to edit and access the additional operations to define a chronology. Those fields must also be translated in at least two languages for the chronology to be published on ArkeoGIS.
Name: Maximum 100 characters.
Description: Must include the geographical scope. Is used for the textual consultation of the information.
Author(s): The members of the eponymous working group. They can edit and update the chronology.
Credits: External contributors, reference work, quotes, etc.
Published: The chronology can be published by activating this button if all the conditions are met. By published, we mean that users can choose them in their personal project.
Publishable: ArkeoGIS indicates to the authors if YES or NO the conditions are met.
Error in the date: ArkeoGIS indicates to the authors the amount of errors in the date (overlap of two periods, years not included in successive periods).
Download the CSV: The authors can download a CSV export of the chronology in each of the available languages.
Save: The authors must save the information after the input to validate it.
Geographical scope…: It is mandatory to define the geographical scope of the chronology. After using the zoom and de-zoom functions and choosing an approximate geographical scope from the world map, the authors can have two different tools to accurately draw the scope on the map.
A)When clicking on “Polygon”, the user must click successively on each summit of the area, ending by clicking again on the first one. The size of this area can always be modified.
B)When clicking on “Rectangle”, the author must click, drag and drop the cursor on the map. Its size can always be changed by clicking on the angles or moved by clicking on its centre.
The author must use the “Validate area” button to save, leave the map and go back to the chronoditor.
Back to the list: To leave the edition interface and go back to the list of chronologies.
Cancel: Won’t save the latest modifications.
Delete: To delete the chronology, a double validation is requested.

Definition of the periods of the chronology.
- The architecture of the chronologies is based on a parent/children relationship (cf :ArkeoGIS v.1, v.2 and v.3).
- The maximal amount of levels for each period and sub-period is four.
- There is a maximum of ten level-1 periods which constitute the different configurable chronologies (plus “Unknown” which is automatically included in all chronologies).
- There is no limit in the number of same level sub-periods from level-2 and following.
- The author must choose a name and starting and ending limits for each period and sub-period. Those must be absolute dates. Those fields are positive by default, which means the date is preceded by a « + » sign. If the date is negative, the user must add a “-“ sign. ArkeoGIS uses the Christian calendar.
- When the user adds a sub-period, ArkeoGIS reproduces the starting and ending limits of its parent period. The limits of the sub-period must be included between its parent limits. If not, ArkeoGIS notifies the problem by a red frame. If the author does not correct those errors, the chronology can’t be published.
- When the chronology is saved in a language, the periods and limits are automatically replicated in every available language. The author must translate those periods’ names in at least one other language (including English) to be able to publish the chronology on ArkeoGIS.

Display of the chronology’s periods.
- The colours displayed on the background of each period in the editor are those which will be used by ArkeoGIS to display the sites’ icon on the map.
- The shades used range from blue for the oldest periods to purple for the most recent ones. The grey is used for the “Unknown” period.
- The colour intensity is stronger when the period is more accurate, according to the table below.
The information displayed on this screenshot is the one available on the ArkeoGIS’ app for Continental Europe from the Neolithic to nowadays chronology on the 1st of January 2017.