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An American Battlefield: Orxois

The Orxois plateau--its soil and relief.

A varied landscape.

The Orxois is a plateau extending north of the Marne to the Soissonnais, at a mean height of 160 metres. But it is very far from being uniform. Let us study the nature of its soil, and the relief, that we may comprehend its aspects more thoroughly. The substratum of the plateau of the Orxois is the layer of rock called "hard limestone" 30 to 40 metres in thickness, so much of which is used for building material in the towns and villages. This layer is almost horizontal, and if there were nothing superimposed upon it, the plateau would be a practically level platform. But above the hard limestone are successive layers of a far different character--layers of sand, of Beauchamp sandstone, mingled with marl, making a moist, impermeable, infertile soil; then another layer of limestone, softer and more clayey than that below. Finally, this upper limestone is covered, especially toward the east, with thin layers of marl, clay and, lastly, Fontainebleau sand, which are connected with the strata of the Tardenois. Thus, to a depth of 100 metres, we find a succession of diversified strata, hard and soft, dry and moist, which impart great variety to the landscape.