| Volcano Name: | Mashu | Smithsonian Inst ID (SI_VNUM): | 285081 |
| Alternate Name: |
Kamuinupuri Kamuishi Kamuishuto Kamuissyuto Masyu Nishibetsu Nisibetu |
Volcano Type: | Caldera(s) |
| Latitude: | 43.5697222200 | ||
| Longitude: | 144.5652778000 | ||
| Region: | Japan, Taiwan, Marianas | Sub Region: | Hokkaido |
| Date Entered: | 02/05/2012 |
| Eruption Start Date: | 1080 | Date Error: | 100 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | Medium quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 1.800 (Literature) | ||
| Bulk deposit volume (km3): | 4.600 (Literature) | ||
| Magnitude : | 5.700 (Literature) | ||
| Maximum VEI : | 5.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 1.800 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 4.600 (Literature) |
| Magma: | Dacite | ||
| Calculated Density: | |||
| Rock Classification: | |||
| Dacite |
| Eruption Start Date: | 150 | Date Error: | 100 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | High quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 0.188 (Literature) | ||
| Bulk deposit volume (km3): | 0.490 (Literature) | ||
| Magnitude : | 4.700 (Calculated) | ||
| Maximum VEI : | 4.000 (Literature) |
| Eruption Start Date: | -2050 | Date Error: | 40 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| C14 Date: | 3660 | C14 Date Error: | 40 | |
| Bulk DRE Volume (km3): | 0.130 (Literature) | ||
| Bulk deposit volume (km3): | 0.320 (Literature) | ||
| Magnitude : | 4.500 (Literature) | ||
| Maximum VEI : | 4.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 0.130 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 0.320 (Literature) |
| Magma: | Dacite | ||
| Calculated Density: | |||
| Rock Classification: | |||
| Dacite |
| Eruption Start Date: | -3550 | Date Error: | 40 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | High quality | Preferred Date: | Y | |
| C14 Date: | 4720 | C14 Date Error: | 40 | |
| Bulk DRE Volume (km3): | 0.110 (Literature) | ||
| Bulk deposit volume (km3): | 0.270 (Literature) | ||
| Magnitude : | 4.400 (Literature) | ||
| Maximum VEI : | 4.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 0.110 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 0.270 (Literature) |
| Eruption Start Date: | -5550 | Date Error: | 100 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | Medium quality | Preferred Date: | Y | |
| C14 Date: | 175 | C14 Date Error: | ||
| Bulk DRE Volume (km3): | 7.400 (Literature) | ||
| Bulk deposit volume (km3): | 18.600 (Literature) | ||
| Ignimbrite DRE Volume (km3): | 3.800 (Literature) | ||
| Ignimbrite Deposit Volume : | 9.700 (Literature) | ||
| Magnitude : | 6.300 (Literature) | ||
| Maximum VEI : | 6.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 3.600 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 8.900 (Literature) |
| Magma: | Dacite-Rhyolite | ||
| Calculated Density: | |||
| Rock Classification: | |||
| Dacite | |||
| Rhyolite |
| Eruption Start Date: | 11800 BP | Date Error: | 100 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | Medium quality | Preferred Date: | Y | |
| C14 Date: | 10130 | C14 Date Error: | 60 | |
| Bulk DRE Volume (km3): | 0.460 (Literature) | ||
| Bulk deposit volume (km3): | 1.200 (Literature) | ||
| Magnitude : | 4.700 (Literature) | ||
| Maximum VEI : | 4.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 0.460 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 1.200 (Literature) |
| Magma: | Not Available | ||
| Calculated Density: | |||
| Rock Classification: |
| Eruption Start Date: | 13700 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 0.320 (Calculated) | ||
| Bulk deposit volume (km3): | 0.800 (Literature) | ||
| Magnitude : | 4.900 (Calculated) | ||
| Maximum VEI : | 4.000 (Calculated) |
| Eruption Start Date: | 13850 BP | Date Error: | 50 | |
| Eruption End Date: | Dating Technique: | Radiocarbon (corrected) | ||
| Eruption Date Quality: | High quality | Preferred Date: | Y | |
| C14 Date: | 11930 | C14 Date Error: | 70 | |
| Bulk DRE Volume (km3): | 6.600 (Literature) | ||
| Bulk deposit volume (km3): | 20.600 (Literature) | ||
| Magnitude : | 6.200 (Calculated) | ||
| Maximum VEI : | + 5.000 (Literature) | ||
| Tephra fall DRE Volume (km3): | 6.600 (Literature) | ||
| Tephra fall Deposit Volume (km3): | 20.600 (Literature) |
| Magma: | Dacite | ||
| Calculated Density: | |||
| Rock Classification: | |||
| Dacite |
| Eruption Start Date: | 16800 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 2.400 (Calculated) | ||
| Bulk deposit volume (km3): | 6.000 (Literature) | ||
| Magnitude : | 5.800 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 19500 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 2.000 (Calculated) | ||
| Bulk deposit volume (km3): | 5.000 (Literature) | ||
| Magnitude : | 5.700 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 20100 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 0.600 (Calculated) | ||
| Bulk deposit volume (km3): | 1.500 (Literature) | ||
| Magnitude : | 5.200 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 23500 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 1.200 (Calculated) | ||
| Bulk deposit volume (km3): | 3.000 (Literature) | ||
| Magnitude : | 5.500 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 25000 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 0.400 (Calculated) | ||
| Bulk deposit volume (km3): | 1.000 (Literature) | ||
| Magnitude : | 5.000 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 25600 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 0.800 (Calculated) | ||
| Bulk deposit volume (km3): | 2.000 (Literature) | ||
| Magnitude : | 5.300 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 26490 BP | Date Error: | 890 | |
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | >= 0.400 (Assumed) | ||
| Bulk deposit volume (km3): | >= 1.000 (Assumed) | ||
| Magnitude : | 5.500 (Literature) | ||
| Maximum VEI : | 5.000 (Assumed) |
| Magma: | Not Available | ||
| Calculated Density: | |||
| Rock Classification: |
| Eruption Start Date: | 27380 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 1.600 (Calculated) | ||
| Bulk deposit volume (km3): | 4.000 (Literature) | ||
| Magnitude : | 5.600 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 27675 BP | Date Error: | 295 | |
| Eruption End Date: | Dating Technique: | Stratigraphy | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | >= 0.040 (Assumed) | ||
| Bulk deposit volume (km3): | >= 0.100 (Assumed) | ||
| Magnitude : | 4.900 (Literature) | ||
| Maximum VEI : | 4.000 (Calculated) |
| Eruption Start Date: | 27970 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 2.000 (Calculated) | ||
| Bulk deposit volume (km3): | 5.000 (Literature) | ||
| Magnitude : | 5.700 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 30320 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 2.400 (Calculated) | ||
| Bulk deposit volume (km3): | 6.000 (Literature) | ||
| Magnitude : | 5.800 (Literature) | ||
| Maximum VEI : | 5.000 (Calculated) |
| Eruption Start Date: | 30810 BP | Date Error: | 490 | |
| Eruption End Date: | Dating Technique: | Stratigraphy | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | >= 0.040 (Assumed) | ||
| Bulk deposit volume (km3): | >= 0.100 (Assumed) | ||
| Magnitude : | 4.500 (Literature) | ||
| Maximum VEI : | 4.000 (Calculated) |
| Eruption Start Date: | 31300 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 4.000 (Calculated) | ||
| Bulk deposit volume (km3): | 10.000 (Literature) | ||
| Magnitude : | 6.000 (Literature) | ||
| Maximum VEI : | 6.000 (Calculated) |
| Eruption Start Date: | 33700 BP | Date Error: | ||
| Eruption End Date: | Dating Technique: | Carbon-14 (uncorrected) | ||
| Eruption Date Quality: | Low quality | Preferred Date: | Y | |
| Bulk DRE Volume (km3): | 4.000 (Calculated) | ||
| Bulk deposit volume (km3): | 10.000 (Literature) | ||
| Magnitude : | 6.000 (Calculated) | ||
| Maximum VEI : | 6.000 (Calculated) |