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Table 6 Rock compressibility, magnetic susceptibility, specific and volumetric heat capacity of the LHVC
Unit | ß | χ | cp | VHC |
|---|---|---|---|---|
[PSI] | [10–3 SI] | [J kg–1 K–1] | [J m3 K–1] | |
Post-caldera group | ||||
 Pyroclastics, undifferentiated | 3.3E-04 | 3.977/3.758 (3) ± 0.448 | 883 (1) | 1306 (1) |
 Basalts | 1.3E-05 | 1.356/1.357 (18) ± 0.534 Q1: 0.997, Q3: 1.586 CV: 39.39% | 753/758 (5) ± 51 Q1: 701, Q3: 801 CV: 6.74% | 1698/1663 (5) ± 98 Q1: 1612, Q3: 1802 CV: 5.77% |
 Ash fall deposits | 4.2E-04 | − 0.004/− 0.009 (4) ± 0.016 Q1: -0.014, Q3: 0.013 | 862 (1) | 1034 (1) |
Caldera group | ||||
 Zaragoza ignimbrite | 1.4E-04 | 1.098/0.842 (15) ± 0.586 Q1: 0.630, Q3: 1.555 CV: 53.34% | 766/776 (3) ± 21 | 1248/1164 (3) ± 176 |
 Xáltipan ignimbrite total | 2.6E-04 | 0.441/0.310 (50) ± 0.431 Q1: 0.095, Q3: 0.778 CV: 97.72% | 762/750 (7) ± 38 Q1: 740, Q3: 803 CV: 4.95% | 992/931 (9) ± 348 Q1: 842, Q3: 1151 CV: 35.07% |
  Xáltipan ig. (unaltered) | 2.9E-04 | 0.495/0.325 (41) ± 0.446 Q1: 0.089, Q3: 0.963 CV: 90.14% | 767/763 (4) ± 28 Q1: 742, Q3: 796 | 975/931 (7) ± 147 Q1: 842, Q3: 1044 CV: 15.03% |
  Xáltipan ig. (pumice) | 6.3E-04 | 0.115/0.117 (8) ± 0.032 Q1: 0.086, Q3: 0.131 CV: 27,91% | 778 (2) ± 50 | 408 (1) |
  Xáltipan ig. (altered, welded) | 6.2E-06 | 0.874 (1) | 707 (1) | 1697 (1) |
Pre-caldera group | ||||
 Cinder cones total | 5.8E-05 | 0.773/0.644 (7) ± 0.330 Q1: 0.618, Q3: 1.008 CV: 42.61% | 747/761 (3) ± 32 | 1349/1520 (3) ± 312 |
  Scoria | 3.1E-05 | 0.598/0.639 (5) ± 0.090 Q1: 0.528, Q3: 0.647 CV: 15.02% | 765 (2) ± 6 | 1530 (2) ± 14 |
  Fallout deposits | 5.3E-04 | 1.211 (2) ± 0.287 | 710 (1) | 989 (1) |
 Teziutlán andesite unit total | 5.7E-06 | 6.092/5.697 (80) ± 2.852 Q1: 4.081, Q3: 7.822 CV: 46.82% | 765/766 (15) ± 40 Q1: 751, Q3: 784 CV: 5.25% | 1963/2044 (15) ± 148 Q1: 1844, Q3: 2058 CV: 7.52% |
  Teziutlán and. (nonporous) | 1.8E-06 | 6.995/6.524 (55) ± 2.859 Q1: 5.322, Q3: 8.223 CV: 40.88% | 762/765 (10) ± 46 Q1: 744, Q3: 786 CV: 6.09% | 2035/2044 (11) ± 92 Q1: 1991, Q3: 2078 CV: 4.52% |
  Teziutlán and. (porous) | 2.7E-05 | 4.105/4.111 (25) ± 1.551 Q1: 2.767, Q3: 5.243 CV: 37.78% | 772/774 (5) ± 27 Q1: 749, Q3: 794 CV: 3.34% | 1767/1761 (4) ± 59 Q1: 1714, Q3: 1826 |
 Cuyoaco andesite unit | 2.9E-06 | 2.367/2.471 (23) ± 1.269 Q1: 0.956, Q3: 2.961 CV: 53.63% | 752/744 (7) ± 26 Q1: 728, Q3: 766 CV: 3.51% | 1941/1924 (7) ± 127 Q1: 1817, Q3: 2002 CV: 6.53% |
Basement | ||||
 Limestone Cretaceous | 8.6E-07 | 0.162/− 0.004 (193) ± 0.634 Q1: − 0.026, Q3: 0.021 CV: 391.76% | 807/814 (32) ± 31 Q1: 785, Q3: 825 CV: 3.79% | 2159/2162 (32) ± 127 Q1: 2095, Q3: 2246 CV: 5.87% |
 Chert nodules | 3.0E-07 | − 0.029/− 0.032 (15) ± 0.012 Q1: − 0.033, Q3: -0.0267 CV: 40.95% | 814 (2) ± 30 | 2157 (2) ± 138 |
 Shales Cretaceous | 1.6E-06 | 0.056/0.051 (7) ± 0.010 Q1: 0.049, Q3: 0.058 CV: 17.59% | 780 (1) | 2068 (1) |
 Limestone Jurassic | 8.7E-07 | 0.038/0.001 (25) ± 0.115 Q1: − 0.003, Q3: 0.019 CV: 306.01% | 829/823 (6) ± 40 Q1: 809, Q3: 847 CV: 4.77% | 2171/2155 (5) ± 108 Q1: 2080, Q3: 2271 CV: 4.98% |
 Sandstone Jurassic | 6.0E-05 | 0.067/0.006 (6) ± 0.157 Q1: − 0.014, Q3: 0.125 CV: 232.56% | 739 (1) | 1524 (1) |
 Basaltic–andesitic dykes | 9.1E-07 | 11.270/4.199 (14) ± 12.410 Q1: 2.909, Q3: 26.52 CV: 110.05% | 757 (2) ± 55 | 2088 (2) ± 312 |
 Marble | 9.8E-07 | 0.124/− 0.027 (41) ± 0.498 Q1: − 0.034, Q3: 0.008 CV: 402.46% | 853/836 (9) ± 45 Q1: 825, Q3: 859 CV: 5.25% | 2318/2269 (9) ± 123 Q1: 2208, Q3: 2435 CV: 5.32% |
 Quartz veins | 3.3E-06 | 0.349/0.136 (19) ± 0.713 Q1: 0.052, Q3: 0.350 CV: 204.11% | 760/763 (4) ± 13 Q1: 746, Q3: 771 V: 1.75% | 1941/1937 (4) ± 51 Q1: 1895, Q3: 1991 |
 Skarn | 1.6E-06 | 94.120/3.920 (62) ± 190.800 Q1: 1.756, Q3: 102.800 CV: 202.72% | 742/740 (11) ± 26 Q1: 746, Q3: 763 CV: 3.51% | 2399/2477 (12) ± 333 Q1: 2028, Q3: 2629 CV: 13.89% |
 Granitoids total | 5.1E-06 | 4.363/3.331 (60) ± 4.457 Q1: 0.301, Q3: 6.402 CV: 102.15% | 775/787 (15) ± 54 Q1: 749, Q3: 809 CV: 6.91% | 1901/1920 (26) ± 123 Q1: 1798, Q3: 1979 CV: 6.48% |
  Granitoids (weak–moderate alteration) | 1.2E-06 | 5.206/3.573 (38) ± 4.878 Q1: 1.738, Q3: 6.795 V: 93.70% | 769/779 (12) ± 57 Q1: 733, Q3: 793 CV: 7.39% | 1956/1972 (9) ± 174 Q1: 1811, Q3: 2065 CV: 8.90% |
  Granitoids (strong alteration) | 1.2E-05 | 0.036/0.026 (12) ± 0.048 Q1: − 0.0068, Q3: 0.085 CV: 135.70% | 795/809 (3) ± 38 | 1931/1948 (4) ± 100 Q1: 1828, Q3: 2016 |