experimental
Entry: Base of Portlandian
URI: https://data.geoscience.fr/ncl/GeolTsBound/2140
no description supplied
Definition
category |
geology
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has tRS |
Million d'années
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in scheme |
Chronostratigraphical / geochronological boundaries
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label |
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nature |
Régional
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numeric position |
148,053
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percentage |
57
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pref label |
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ref age |
Tithonian
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source |
Fictif ICS2020-01
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spatial |
Europe
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type |
era boundary
| Concept
| geochronologic boundary
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