Open Access
Table 1
Details on the studied sites, including adjacent valley direction, quarry face direction and mean fracture directions. Although both valleys and quarry face directions vary, the same orthogonal network of joints is measured for all studied sites.
| Setting | Proximal town | Site name | Coordinates | Adjacent valley direction | Quarry face direction | Mean orientations of fractures | Altitude of sandstones (m) |
|---|---|---|---|---|---|---|---|
| 1 | Souzy-la-Briche | Madagascar quarry | 48°32'15”N 2°09'02”E | N40° | N105° and N30° | N115° – N022° | 140 |
| 2 | Émancé | Sauvage Castle | 48°35'13”N 1°44'34”E | N70° | N65° | N109° – N021° | 140 |
| 3 | Saint-Rémy-lès-Chevreuses | Mérantaise quarry | 48°42'58”N 2°06'30”E | N140° | N030° and N165° | N111° – N027° | 150 |
| 4 | Orsay | La Troche quarry | 48°41'33”N 2°11'44”E | N90° | Changing from N020° to N095° | N116° – N025° | 150 |
| 5 | Orsay | Bois Persan quarry | 48°41'30”N 2°11'55”E | N90° | Changing from N070° to N115° | N108° – N026° | 145 |
| 6 | Lardy | Chamarande quarry | 48°31'08”N 2°14'16”E | N70° | Changing from N020° to N100° | N106° – N019° | 140 |
| 7 | Auvers-Saint-Georges | Deschamps Est quarry | 48°28'40”N 2°12'47”E | N25° | N060° | N106° | 135 |
| 8 | Auvers-Saint-Georges | Deschamps Ouest quarry | 48°28'35”N 2°12'21”E | N25° | Changing from N005° to N115° | N117° – N008° | 130 |
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