La Reforma Volcano
Updated: Apr 19, 2024 16:54 GMT -
Caldera 1300 m / 4265 ft
Mexico, 27.51°N / -112.39°W
Current status: (probably) extinct (0 out of 5)
Mexico, 27.51°N / -112.39°W
Current status: (probably) extinct (0 out of 5)
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La Reforma volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene)
Latest nearby earthquakes
| Time | Mag. / Depth | Distance / Location | |||
| Apr 16, 12:56 am (Hermosillo) | 3.3 6 km | 27 km (17 mi) to the N |  Mexico: 47 km al NORTE de SANTA ROSALIA, BCS I FELT IT | Info | |
| Monday, April 8, 2024 GMT (1 quake) | |||||
| Apr 8, 02:21 am (Hermosillo) | 3.3 5 km | 28 km (17 mi) to the N | Gulf of California | Info | |
| Sunday, April 7, 2024 GMT (1 quake) | |||||
| Apr 7, 12:56 am (Hermosillo) | 3.6 10 km | 30 km (18 mi) to the N | Mexico: 48 km al NORTE de SANTA ROSALIA, BCS | Info | |
| Monday, April 8, 2024 GMT (2 quakes) | |||||
| Apr 8, 02:55 am (Hermosillo) | 3.0 5 km | 26 km (16 mi) to the N | Gulf of California | Info | |
| Apr 8, 03:45 am (Mazatlan) | 2.9 5 km | 18 km (11 mi) to the N | Mexico: 38 km al NORTE de SANTA ROSALIA, BCS | Info | |
Background
The early Pleistocene La Reforma caldera lies along the Gulf of California immediately east of Tres Vírgenes volcano and SE of the late-Pleistocene El Aguajito caldera. The roughly 10-km-wide caldera contains basaltic, andesitic, and dacitic lava flows, and rhyolitic lava domes. A prominent arcuate caldera rim extends from La Reforma along the NW coast to near Punta Las Cuevas on the SE coast. The age of the caldera was determined by the K-Ar method to be between 1.6 and 1.4 million years old (Ma). A 1.09 +/- 0.11 Ma age was obtained on a ring-fracture lava dome. Andesitic lava flows were erupted on the flanks of the caldera both before and after caldera formation.---
Source: Smithsonian / GVP volcano information
Latest satellite images
