Caussade is a commune in the district of Montauban, located in the Tarn-et-Garonne department in the Occitanie region in the south of France.

Further descent into the former Oligocene Gulf of Monteils leads to the former floodplain of the Aveyron, which meets the Tarn downstream from Montauban.

The plateaus of limestone are permeable, with the notable exception of sinkholes, and ouvalas covered with clay and siderolithic deposits of Phosphor.

Remains of furnaces or remnants of deposits for production, in the form of bricks and tiles, are located near populated areas and on farms or in villages.

At the expense of Moissac Abbey, the austere cahorsin Jacques Duez, Pope under the name John XXII, seals the domination by creating the diocese of Montauban in 1317.

The last count of Rodez, Charles d'Armagnac, had been in favour of his illegitimate son Pierre taking the lordship.

Contrasting with the slow erasure of Haut-Quercy, the last two centuries of the Ancien Régime are the economic heyday of this prosperous southern area, diversified agriculture, viticulture and arboriculture refined the remarkable industrial dynamics, driven by textile and mills.

Until 1900, rail encouraged the production and export of tomatoes, peas, beans, onions, asparagus and cauliflower plus artichokes and melons in a few areas.

The initiative came from Lady Petronilla Cantecor (1762-1846), born "Gleye" at a place called Bourrou", in the parish of St. Martin de Cesquières, a town of Caussade and of peasant origin selling at the market.

In 1860, the services of the railway are a boon to the hat industry, since heavy modern machines ship easily to the station platform.

Besides this common canvas, the once flourishing trade of grains, flour, saffron, fruits, truffles and poultry continues.

Deposits of cantons de Caylus, Caussade and Saint-Antonin were operated from 1870 by an industrial company, Compagnie des Phosphates du Midi.

These compact masses phosphorite whitish, pale grey or yellow or red in colour are similar to the Natterjack and were also crushed and used as fertilizer locally.