From the BRGM geological map 1/50000th HAGETMAU September 1997 JP direction Capdeville
Same
Preview Bulletin de la Societe de Borda No. 439 of the third quarter of 1995 article by Jean
Delfaud , University Professor Pau and Pays de l'Adour
Click on documents to enlarge
Same 
Preview Bulletin de la Societe de Borda No. 439 of the third quarter of 1995 article by Jean Delfaud , University Professor Pau and Pays de l'Adour
Click on documents to enlarge
But yes my good sir, there was an anticline Audignon! And why not?
Mont de Marsan has been a prefecture in 1790, there was a bishop in St. Papoul from 1317 to 1802, a sub-prefect of Lombez 1790 to 1926 and the shield of Brennus in Quillan in 1929 ...
Now we completely change of scale, we no longer speak to century but in tens of thousands of centuries or more in MILLION YEARS (MA)
Our Audignon
anticline is still not isolated in the region, he lives with those of Vic Bihl of Pécorade, Riscle of Tercis, Saint Lon Mines, with diapirs Dax of Thétieu of Basten and the dome of Rent. These organizations around the synclinorium of Arzacq also called for extending Chalosse Gamarde in Vic en Bigorre. The
filling Chalosse belongs to the Alpine cycle, initiation covers the Triassic (between 245 and 205 million years AD) and is expanding to the Cretaceous (135-65 AD) and senescence in the Eocene or the Oligo-Miocene (53-40 MA).
One example, the limestone quarry at Arcet Montaut were formed by sediment in the sea at the Danian (65 to 60 MA). Dinosaurs no longer existed for some MA.
The climax comes at the end of the Eocene (34 AD). Pyrenean tightening leads to very many shots and very strong earthquakes, structure oriented east - west and in particular our anticline. In
Miocene (23.5 to 5 AM), there is a small mountain about 200 to 250 meters in elevation between the ocean and St. Sever its gulfs in Hagetmau.
The structure is asymmetrical with a north side (between Saint-Sever and Audignon) broke and collapsed against the southern flank (between Audignon and Doazit) with significant dips in the Cretaceous Paleocene series.
The anticline extends to the east by a periclinal (Sarraziet Fargues).
Middle Miocene, our little peninsula is eroded (13 Ma) and the sea transgresses, the continued erosion in the Late Miocene (6 Ma) and Pliocene (5.3 to 1.65 MA). Then the tawny sands Chalosse appear and gradually the original Pyrenean Molasse sedimentation continues in synclinal areas. In
quaternary (1.65 MA-present), the landscape becomes one we know today with huge changes in vegetation due to climatic conditions very different.
It is worth recalling the successive climates:
- before the Triassic 245 Ma: equatorial climate
- Triassic to the middle Eocene (205-50 AD):
tropical climate - the Oligocene (34 to 23.5 MA): desert climate
- Quaternary (1.65 MA at least 10000 years): alternating ice and warmer periods
This text is a summary of outreach materials published in the Bulletin de la Societe de Borda Q3 1995 by Professors John and Bruno DELFAUD CAHUZAC
Now we completely change of scale, we no longer speak to century but in tens of thousands of centuries or more in MILLION YEARS (MA)
Our Audignon
anticline is still not isolated in the region, he lives with those of Vic Bihl of Pécorade, Riscle of Tercis, Saint Lon Mines, with diapirs Dax of Thétieu of Basten and the dome of Rent. These organizations around the synclinorium of Arzacq also called for extending Chalosse Gamarde in Vic en Bigorre. The
filling Chalosse belongs to the Alpine cycle, initiation covers the Triassic (between 245 and 205 million years AD) and is expanding to the Cretaceous (135-65 AD) and senescence in the Eocene or the Oligo-Miocene (53-40 MA).
One example, the limestone quarry at Arcet Montaut were formed by sediment in the sea at the Danian (65 to 60 MA). Dinosaurs no longer existed for some MA.
The climax comes at the end of the Eocene (34 AD). Pyrenean tightening leads to very many shots and very strong earthquakes, structure oriented east - west and in particular our anticline. In
Miocene (23.5 to 5 AM), there is a small mountain about 200 to 250 meters in elevation between the ocean and St. Sever its gulfs in Hagetmau.
The structure is asymmetrical with a north side (between Saint-Sever and Audignon) broke and collapsed against the southern flank (between Audignon and Doazit) with significant dips in the Cretaceous Paleocene series.
The anticline extends to the east by a periclinal (Sarraziet Fargues).
Middle Miocene, our little peninsula is eroded (13 Ma) and the sea transgresses, the continued erosion in the Late Miocene (6 Ma) and Pliocene (5.3 to 1.65 MA). Then the tawny sands Chalosse appear and gradually the original Pyrenean Molasse sedimentation continues in synclinal areas. In
quaternary (1.65 MA-present), the landscape becomes one we know today with huge changes in vegetation due to climatic conditions very different.
It is worth recalling the successive climates:
- before the Triassic 245 Ma: equatorial climate
- Triassic to the middle Eocene (205-50 AD):
tropical climate - the Oligocene (34 to 23.5 MA): desert climate
- Quaternary (1.65 MA at least 10000 years): alternating ice and warmer periods
This text is a summary of outreach materials published in the Bulletin de la Societe de Borda Q3 1995 by Professors John and Bruno DELFAUD CAHUZAC
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