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Formations dating back to the Albian Age
The ochres of Provence formed from the Albian Age (110 million years ago) to the beginning of the Cenomanian Age (95 million years ago). Today, vestiges of yellow and red ocher sands with intersecting stratifications remain from the Albian age. They are rich in mica and glauconite, especially in their lower part. The aeolian shaping of quartz evokes local emergences of beaches and dunes.
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