Figure 1
![A simplified geological and structural map of the Polish Carpathians [5, 16, 23, 30].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647378f34e662f30ba53f813/j_sgem-2020-0003_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKJ6EBITH6%2F20260126%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260126T043239Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGkaDGV1LWNlbnRyYWwtMSJHMEUCIGKtnfOnXrWO3qFO2vhE%2BOPqMhkIDO8TcGBR%2ByQjKJ9dAiEA8AIXfoQf8J72d5mnx%2FER0C8Ye9Dr1DozSLmSqpC7BoYqvAUIMxACGgw5NjMxMzQyODk5NDAiDMf49PRUlcNmUwI%2FByqZBUlA2fK4Hk757zwE0zIZufqvR4o1n%2Bb8DEDPSGZJ%2Fy%2B82Xpy096xhuMPHlYr1HO8nYUxO%2F6yPb7Osl1bCMbmEafDVIc%2BWLOGE%2BOeNcL0DlKDYJ5QsQHatVipfrb36H5z6nfQsCdeZJQ8uIvPg4bV7pmqGdyu3VKvWEYuZMIRFOK%2BwTwCqIoSx9%2FqE3E3XZx1t42J%2Bq2PUu4dnCUh1FJV%2FDN20d9EKN96mW%2BoTMU6z410UG%2BJy%2FnBng13Jl65y%2Bg6ByqeP1vjLLzzM%2FEOzUqoT3p6FX6pfi4GIek222uKkNmAUnHDm1VvCOOXxkdH6f5bon43yMzrZar9AYj%2BrYG%2BwHnMhLcqZF42IeTaO5wENjcKr4MKWdqwPd7aOyi0ZpqswOJar9u6FrbQGXh1rcP9ksoeCzGtKk0XjyEnzctYOwqOx%2Bc5ZmypGJwyK3DYep4zpgVvmJoj8pxceHxbqL6CJu%2Bf7W1NVhyt4dCuVdGXhfp%2FJz8VDQO5YGt4dNWkBrZ0MIhuxj9qxro4RTldrU0v%2Be6nxnCyt4cgG9tDQMioudRkJyFbwI%2B79gRePP3rMhHyVO9fAx5T%2BgJ1P4Jb5I8OSxt1X2FzQhbPSSco%2BdeuYVglPt7vqwzxNMQ0AKj8Fap5QaT4U6WqA4uGOASjKUBcUBEVCaj1dev0%2BqQ2JPQYRWbMYFLOkP2BgVP4iM1qwLHlhQKmnG4%2F9Dwh05ovHJFk8a3qFpFd6YILDac4GEzBr2OsYrB43zU8YFoazUDc3UTrwQU86MSOjwE%2F%2F9jBwRZNUy3BPyI%2Bon7%2BWaIZhopEiUMnVJvbm%2Bn%2BZpRTXETupjWy3ey4mMlVgqHsGsbOuHPfzERbbXTtFUSkh330rTg%2Frb5CiwC3oGOCF%2B4rML2D28sGOrEBsfPXt9MZmKHny1Cdf6bNfL%2BUGKadcmvUjwB42zeKMRzNJLuTgH89Gk1yt8CWpl9LNgQxDkX6IT9g6ZbBWgrv2cXyqnsS2MYWr0%2BCrvxOFiZ8svZPn5UsYK0NEUS7e2%2FeZtFFniSYO4sKx2Li%2B998vMbdo0dTUOPI8R2NcBL0OWSNzWpoMzsqolslf4xH%2FvE2pYgss3BXf2WZY6WN%2FlxrEFJQYVaqFk6cRlISeSre%2BWJE&X-Amz-Signature=c6bf8d9d3ff4a6878eda5bc671ecd827f33f0142d99d094967c3a5d16e917507&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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Regression statistics_
| Coefficients | R square | Standard error | t Stat | p-value | Lower 95% | Upper 95% | |
|---|---|---|---|---|---|---|---|
| Linear function | |||||||
| Intersection | 0.480 | 0,8129 | 2.139 | 0.224 | 0.822 | −3.773 | 4.733 |
| LA | 1.486 | 0.076 | 19.444 | 2.02E-33 | 1.334 | 1.638 | |
| Exponential function | |||||||
| Intersection | 6.634 | 0,7426 | 2.246 | 2.952 | 0.004 | 2.168 | 11.099 |
| exp^(0.034*LA) | 12.904 | 0.814 | 15.845 | 2.24E-27 | 11.285 | 14.522 | |
| Logarithmic function | |||||||
| Intersection | −103.338 | 0,8161 | 7.330 | −14.097 | 3.49E-24 | −117.908 | −88.768 |
| ln(LA) | 44.265 | 2.252 | 19.649 | 9.59E-34 | 39.788 | 48.743 | |
Physico-mechanical properties of sandstones [12]_
| Rock type | Bulk density [Mg/m3] | Absorbability [%] | Dry condition compressive strength [MPa] | Compressive strength after water absorption [MPa] | ||||
|---|---|---|---|---|---|---|---|---|
| min–max | on average | min–max | on average | min–max | on average | min–max | on average | |
| Krosno sandstone | 2.31–2.71 | 2.64 | 0.25–3.70 | 1.50 | 57–178 | 122 | 40–153 | 89 |
| Magura sandstone | 2.50–2.69 | 2.62 | 0.30–2.47 | 1.12 | 91–207 | 164 | 59–194 | 125 |
| Cergos sandstone | 2.48–2.77 | 2.63 | 0.52–2.94 | 1.33 | 115–207 | 170 | 94–173 | 134 |
Statistical values of LA and MDE coefficients for Carpathian sandstone aggregates_
| Value | LA coefficient | MDE coefficient | ||||||
|---|---|---|---|---|---|---|---|---|
| Overall | Magura sandstone | Cergos sandstone | Krosno sandstone | Overall | Magura sandstone | Cergos sandstone | Krosno sandstone | |
| Average | 26.69 | 24.54 | 23.67 | 41.32 | 40.15 | 35.53 | 37.36 | 62.95 |
| Minimum | 14.00 | 14.00 | 20.00 | 24.30 | 20.00 | 20.00 | 30.00 | 35.20 |
| Maximum | 56.00 | 37.10 | 28.60 | 56.00 | 84.20 | 58.50 | 47.00 | 84.20 |
| Standard deviation | 8.47 | 6.38 | 2.83 | 9.08 | 13.97 | 11.39 | 4.67 | 15.15 |
| Median | 24.30 | 23.35 | 23.10 | 41.00 | 38.10 | 35.15 | 37.40 | 66.00 |
| Coefficient of variation | 31.76 | 26.01 | 11.96 | 21.99 | 34.80 | 32.04 | 12.50 | 24.07 |