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LA DIVE
South view Located in the Poitevin marsh (in France), on the side of its mouth, at some cable's lengths of the sea, it is a paleo-island of the old Golf of Poitou, which became a promontory in the middle of the marshes in consequence of the filling of the Golf by muds, in particular by clays with scrobiculaires. On this ex-island, of lengthened form, as the photographs of its extremities can show it, there is a typically calcareous, poor vegetation similar to the vegetation of the plateaux of Aunis, located at sight of eye, on the other side of l'Aiguillon bay. This bay is the remainder of the old Golf almost filled today (except this bay). A cross section of the marsh makes it possible to understand that this old island is the remainder of the erosion of Oxfordien age's layers, deposited there are approximately 150 My, during the Secondary era.
Here some sights with accompanying notes:
To finish in beauty this page, here’s an extract of an old card which dates from the XV or XVIeme century when one sees very well the insular character of La Dive. Even if the layout of the coasts were not right, the insular character does not leave a doubt.
Bonne journée
Have a nice day (c) K.R. 2000 |
Photo 1: It shows the south of La Dive, one can see that it is indeed an old rock promontory surrounded by marsh put in culture for corn and wheat especially. This photo was taken from the sea wall which protects these marshes from the invasion of the sea, which proves its old islander character recently lost, because of a local recession of sea. Its cliffs are not covered with vegetation and especially are not eroded yet, but bluff (risk of fall!)
Photo 2: It is a sight of the top of La Dive, poor vegetation because of the basement made of limestone is almost level. In back, not easily visible, on the left of the ruin, one guesses the summit of the trees, those of the other sides of the marshes zones (extremely flat, at constant altitude, approximately +3m NGF) which are near of Trizay. Sight towards NE.
Photo 3: Still seen towards NE, but on north part of La Dive. One sees neatly the marsh in culture (harvests were made recently, other parcels still have corn, wheats (presence of thatches in great quantities) and others finally were plowed, perhaps planted (photos taken on beginning of september 1998). In the foreground there is an old limestone quarry, because its ground consists of limestone levelling on all surface, and not of marsh ground, as everywhere presents around La Dive.
Photo 4: Seen towards the SE, but the backlight and gray sky of the day of the photos' realization prevent from seeing the silos of La Pallice, near La Rochelle, which is near at bird's-eye. In the foreground, the top of La Dive with its graminaceous vegetation, and towards the center of the image, the recently plowed grounds of the Poitevin marsh. Normally, before the limit of the horizon one sees the sea wall protecting from the bay, and right after, the sea. At the time the photographs are taken, the sea was low, and the immense mud flats, filled by spots of mussel poles (bouchots in french) are visible.
Photos 5: On this sight of the SW of La Dive. One sees well cliffs of limestone, from 6 to 8 meters high, with few trees, recent moreover, who are obviously planted by the man. Moreover, the old country cottage are on the upper of La Dive, and all along the road which circumvents this promontory by its SE side, some new houses and of large agricultural warehouses are present. All the grounds located around are cultivated in large fields.
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(c) Kim RENAUD 1999- 2007 - All rights reserved worldwide - Tous droits reservés mondialement |