Large-volume volcanic eruptions in the Basin and Range Province include Basin and Range eruptions in Utah, California, Idaho, Colorado, New Mexico, Texas, Arizona, Nevada, Wyoming, and Oregon, as well as those of the Long Valley Caldera geological province and the Yellowstone hotspot.
The volcanic fields within the Basin and Range Province include Northwestern Nevada, the Modoc Plateau, Central Nevada, the Great Basin, Southwestern Nevada, the Mojave Desert, and the Long Valley Caldera regions. Named fields include Coso Volcanic Field, Mono Lake Volcanic Field, Marysvale Volcanic Field, San Juan volcanic field, Indian Peak, Central Colorado volcanic field, Jemez volcanic lineament, Mogollon-Datil volcanic field, Santa Rosa-Calico, and Boot Heel volcanic field.
Many geological features in Western United States have a Northeastern orientation; the North American craton motion has the same orientation as well. [1] For example: the Trans-Challis fault zone in Idaho, the Snake River in Oregon, the Garlock Fault in California, the Colorado River in Utah, the Colorado Mineral Belt, Crater Flat-Reveille Range-Lunar Crater lineament, the Northwestern Nevada volcanic field, the San Juan caldera cluster in Colorado, the Socorro-Magdalena caldera cluster in New Mexico, Jemez Lineament, and the Yellowstone hotspot trail. But the Yellowstone hotspot trail was modified through faults and extension.
Prior to the Eocene Epoch (55.8 ± 0.2 to 33.9 ± 0.1 Ma), the convergence rate of the Farallon and North American Plates was fast and the angle of subduction was shallow. During the Eocene, the Farallon Plate subduction-associated compressive forces of the Laramide orogeny ended, plate interactions changed from orthogonal compression to oblique strike-slip, and volcanism in the Basin and Range Province flared up. It is suggested that this plate continued to be underthrust until about 19 Ma, at which time it was completely consumed and volcanic activity ceased, in part. Olivine basalt from the oceanic ridge erupted around 17 Ma and extension began. [2] [3] [4] [5] [6] The extension resulted in roughly north-south-trending faults, the Great Basin, the Walker trough, the Owens graben, and the Rio Grande rift, for instance.
The large-volume eruptions in the Basin and Range Province include:
| Name or Source | Counties | States | Age (Ma) | VEI | Volume | Notes | References |
|---|---|---|---|---|---|---|---|
| Long Valley Caldera | Mono | California | 0.7589 ± 0.0018 | 7 | 600 km3 (140 cu mi) | Created the Bishop tuff | [7] [8] |
| Valles Caldera | Sandoval | New Mexico | 1.15 | 7 | 600 km3 (140 cu mi) | Created the Tshirege formation of the Bandelier tuff | [8] [9] [10] |
| Valles Caldera | Sandoval | New Mexico | 1.47 | Created the Otowi member of the Bandelier tuff | [8] [9] [11] [12] | ||
| Lake Owyhee volcanic fields | Malheur | Oregon | 15 to 15.5 | May have been due to the Yellowstone hotspot | [13] | ||
| Northwest Nevada volcanic field | Washoe, Humboldt | Nevada | 15.5 to 16.5 | May have been due to the Yellowstone hotspot. Calderas include Virgin Valley, High Rock, Hog Ranch, and others. Tuffs include Idaho Canyon, Ashdown, Summit Lake, and Soldier Meadow. | [14] [15] [16] [17] [18] | ||
| Columbia River Basalt Province | Idaho, Nevada, Oregon, Washington | 14 to 17 | 240,000 km3 (58,000 cu mi) | [8] [19] [20] [21] [22] [23] | |||
| Mount Belknap Caldera | Beaver, Piute | Utah | 19 | 150 km3 (36 cu mi) | 17 km × 12 km (10.6 mi × 7.5 mi); Marysvale Volcanic Field; Joe Lott tuff | [8] [24] | |
| Big John Caldera | Utah | 22 | 50 km3 (12 cu mi) | 10 km × 6 km (6.2 mi × 3.7 mi); Marysvale Volcanic Field; Delano Peak tuff | [8] | ||
| Monroe Peak Caldera | Utah | 23 | 200 km3 (48 cu mi) | 20 km × 16 km (12.4 mi × 9.9 mi); Marysvale Volcanic Field; Osiris tuff | [8] [24] | ||
| Lake City calderas | Colorado | 23.1 | 300 km3 (72 cu mi) | 20 km (12 mi); San Juan volcanic field; Sunshine Peak tuff | [8] [25] [26] | ||
| Turkey Creek Caldera | Cochise | Arizona | 25 | 500 km3 (120 cu mi) | 25 km (16 mi); Rhyolite Canyon Formation; Chiricahua National Monument | [8] [27] | |
| Lake City calderas | Colorado | 25.9 | 200 to 500 km3 (48 to 120 cu mi) | 25 km (16 mi); San Juan volcanic field | [8] [28] | ||
| Questa Caldera | Taos | New Mexico | 26 | 400 km3 (96 cu mi) | 15 km (9.3 mi); Questa-Latir volcanic locus; Amalia tuff | [8] [24] | |
| Creede Caldera | Colorado | 26.7 | 500 km3 (120 cu mi) | 24 km (15 mi); San Juan volcanic field; Wheeler Geologic Area; Snowshoe Mountain tuff | [28] [29] | ||
| San Luis Caldera Complex | Colorado | 26.8 | 562 km3 (135 cu mi) | 18 km (11 mi); San Juan volcanic field; Wheeler Geologic Area; Nelson Mountain tuff | [8] [28] | ||
| San Luis Caldera Complex | Colorado | 26.9 | 250 km3 (60 cu mi) | 18 km (11 mi); San Juan volcanic field; Wheeler Geologic Area; Cebola Creek tuff | [28] | ||
| San Luis Caldera Complex | Colorado | 27 | 150 km3 (36 cu mi) | 18 km (11 mi); San Juan volcanic field; Wheeler Geologic Area; Rat Creek tuff | [8] [28] | ||
| Three Creeks Caldera | Utah | 27 | 100 to 200 km3 (24 to 48 cu mi) | 8 km (5.0 mi); Marysvale Volcanic Field; Cove Fort-Sulphurdale area; Three Creeks tuff | [8] [24] | ||
| South River Caldera | Colorado | 27.1 | 500 km3 (120 cu mi) | San Juan volcanic field; Wheeler Geologic Area; Wason Park tuff | [8] [28] | ||
| Central San Juan Caldera | Colorado | 27.2 | 250 km3 (60 cu mi) | San Juan volcanic field; Blue Creek tuff | [8] [28] | ||
| Bachelor Caldera | Colorado | 27.35 | 1,200 km3 (290 cu mi) | 20 km × 28 km (12 mi × 17 mi); San Juan volcanic field; Wheeler Geologic Area; Carpenter Ridge tuff | [29] | ||
| Silverton Caldera | Colorado | 27.6 | 50 to 100 km3 (12 to 24 cu mi) | 20 km (12 mi); San Juan volcanic field; Crystal Lake tuff | [8] [28] | ||
| La Garita Caldera | Colorado | 27.8 | 8 | 5,000 km3 (1,200 cu mi) | 100 km × 35 km (62 mi × 22 mi); San Juan volcanic field; Wheeler Geologic Area; Fish Canyon tuff | [29] [30] [31] | |
| San Juan Caldera | Colorado | 28 | 1,000 km3 (240 cu mi) | 22 km × 24 km (14 mi × 15 mi); San Juan volcanic field; Sapinero Mesa tuff | [8] | ||
| Uncompahgre Caldera | Colorado | 28.1 | 1,000 km3 (240 cu mi) | 23 km × 20 km (14 mi × 12 mi); Uncompahgre National Forest; San Juan volcanic field; Dillon/Sapinero Mesa tuff | [8] [32] | ||
| Lost Lake Caldera | Colorado | 28.2 | 100 to 500 km3 (24 to 120 cu mi) | San Juan volcanic field; Blue Mesa tuff | [8] | ||
| Platoro calderas | Colorado | 28.2 | 1,000 km3 (240 cu mi) | San Juan volcanic field; Chiquito Peak tuff | [8] | ||
| Central San Juan Caldera | Colorado | 28.3 | 500 km3 (120 cu mi) | San Juan volcanic field; Masonic Park tuff | [8] [28] | ||
| Ute Creek Caldera | Colorado | 28.3 | 500 km3 (120 cu mi) | Central Colorado volcanic field; Ute Ridge tuff | [8] [33] |
| Caldera name | Age (Ma) | Volume | Notes | References |
|---|---|---|---|---|
| Black Mountain Caldera | 7 ± 1 | 300 km3 (72 cu mi) | 18 km (11 mi) wide; Thirsty Canyon tuff | [8] [24] |
| Timber Mountain caldera complex | 11.45 | 900 km3 (220 cu mi) | 30 km × 25 km (19 mi × 16 mi); Timber Mountain tuff – Ammonia Tanks member | [8] [34] |
| Timber Mountain caldera complex | 11.6 | 1,200 km3 (290 cu mi) | Timber Mountain tuff – Rainer Mesa member | [8] [34] |
| Paintbrush Caldera | 12.7 | 1,000 km3 (240 cu mi) | 20 km (12 mi) wide; Paintbrush tuff – Topopah Spring member | [8] [34] |
| Paintbrush Caldera | 12.8 | 1,200 km3 (288 cu mi) | Paintbrush tuff – Tiva Canyon member | [8] [34] |
| Silent Canyon Caldera | 13 | 200 km3 (48 cu mi) | 20 km × 16 km (12.4 mi × 9.9 mi) | [8] [24] |
| Crater Flat Group | 13.25 | 650 km3 (156 cu mi) | Belted Range tuff | [8] |
The Rupelian age/stage (Paleogene period/system, Oligocene epoch/series) spans the time between 33.9 ±0.1 Ma and 28.4 ±0.1 Ma (million years ago).
| Name or Source | Counties | States | Age (Ma) | VEI | Volume | Notes | References |
|---|---|---|---|---|---|---|---|
| Bursum Caldera | New Mexico | 28.5 ± 0.5 | 1,050 km3 (250 cu mi) | 40 km × 30 km (25 mi × 19 mi); Mogollon-Datil volcanic field; Bloodgood Canyon tuff | [8] [35] | ||
| Bursum Caldera | New Mexico | 28.5 ± 0.5 | 1,200 km3 (290 cu mi) | 40 km × 30 km (25 mi × 19 mi); Mogollon-Datil volcanic field; Apache Springs tuff | [8] [35] | ||
| San Juan Caldera | Colorado | 28.5 | 900 km3 (220 cu mi) | San Juan volcanic field | [8] [32] | ||
| Summitville Caldera | Colorado | 28.5 | 100 to 500 km3 (24 to 120 cu mi) | 12 km × 8 km (7.5 mi × 5.0 mi); San Juan volcanic field; Ojito Creek / La Jadero tuffs | [8] [36] [37] | ||
| Mount Hope | Colorado | 29 | 500 km3 (120 cu mi) | 15 km (9.3 mi); San Juan volcanic field; Masonic Park tuff | [8] [25] | ||
| White Rock Caldera | Nevada | 29.02 ± 0.04 | 2,600 km3 (620 cu mi) | 50 km (31 mi); White Rock Mountains; Lund tuff | [8] [38] | ||
| Ute Creek | Colorado | 29 | 500 km3 (120 cu mi) | 8 km (5.0 mi); San Juan volcanic field; Ute Ridge tuff | [8] [25] | ||
| Platoro calderas | Conejos | Colorado | 29.5 | 500 km3 (120 cu mi) | 12 km × 18 km (7.5 mi × 11.2 mi); San Juan volcanic field; Black Mountain tuff | [8] [36] [37] | |
| Indian Peak | Nevada | 29.5 | 3,200 km3 (770 cu mi) | Wah Wah Springs tuff | [8] [39] | ||
| Platoro calderas | Conejos | Colorado | 30 | 592 km3 (142 cu mi) | 18 km × 22 km (11 mi × 14 mi); San Juan volcanic field; La Jara Canyon tuff | [8] [29] [36] | |
| Goodsight–Cedar Hills volcano-tectonic depression | New Mexico | 30.5 ± 1.5 | 295 km3 (71 cu mi) | Bell Top formation | [8] [40] | ||
| William's Ridge | Nevada | 31.4 | 3,500 km3 (840 cu mi) | Windous Butte tuff | [8] [41] | ||
| North Pass Caldera | Colorado | 32.25 | 400 to 500 km3 (96 to 120 cu mi) | Central Colorado volcanic field; Saguache Creek tuff | [8] [42] | ||
| Organ Caldera | New Mexico | 32 | 500 km3 (120 cu mi) | 16 km (9.9 mi); Cueva Soledad rhyolite | [8] [40] | ||
| Chinati Caldera | Texas | 32.5 ± 0.5 | 1,000 km3 (240 cu mi) | 30 km × 20 km (19 mi × 12 mi); Mitchel Mesa rhyolite | [8] [43] | ||
| Bonanza | Colorado | 32.5 | 100 km3 (24 cu mi) | 12 km (7.5 mi); Central Colorado volcanic field; Bonanza tuff | [8] [44] | ||
| Cowboy Rim | Hidalgo | New Mexico | 33 | 500 km3 (120 cu mi) | 26 km × 18 km (16 mi × 11 mi); Gillespie tuff | [8] [45] | |
| Emory Caldera | Grant | New Mexico | 33 | 8 | 1,310 km3 (310 cu mi) | 25 km × 55 km (16 mi × 34 mi); Mogollon-Datil volcanic field; Kneeling Nun tuff | [8] [46] [47] [48] [49] |
| Socorro Caldera | Socorro | New Mexico | 33 | 500 km3 (120 cu mi) | 25 km × 35 km (16 mi × 22 mi); Hells Mesa rhyolite | [8] [29] [50] | |
| Marshall Creek | Colorado | 33.7 | 100 km3 (24 cu mi) | Thirtynine Mile volcanic area; Central Colorado volcanic field; Thorn Ranch tuff | [8] [51] | ||
| Mount Aetna | Colorado | 33.81 | 100 km3 (24 cu mi) | 10 km (6.2 mi); Central Colorado volcanic field; Badger Creek tuff | [8] [52] | ||
| Grizzly Peak Caldera | Colorado | 34.31 | 100 km3 (24 cu mi) | 12 km (7.5 mi); Central Colorado volcanic field; Grizzly Peak rhyolite | [8] [52] | ||
| Juniper Caldera | Hidalgo | New Mexico | 35 | 500 km3 (120 cu mi) | Oak Creek Tuff | [8] [45] | |
| Mount Princeton | Colorado | 35.3 ± 0.6 | 1,000 km3 (240 cu mi) | Central Colorado volcanic field; Wall Mountain tuff | [8] [44] [53] | ||
| Davis Mountains | Texas | 35.35 ± 0.6 | 210 km3 (50 cu mi) | Wild Cherry tuff; Casket Mountain lava | [8] [54] | ||
| Davis Mountains | Texas | 35.61 ± 0.09 | 200 km3 (48 cu mi) | Barrel Springs formation; Ash Flow tuff | [8] [54] | ||
| Quitman Caldera | Hudspeth | Texas | 36 | 300 km3 (72 cu mi) | 15 km × 10 km (9.3 mi × 6.2 mi); Square Peak volcanics | [8] [24] | |
| Davis Mountains | Texas | 36.2 ± 0.6 | 300 km3 (72 cu mi) | Mafic lavas | [8] [54] | ||
| Davis Mountains | Texas | 36.33 ± 0.13 | 150 km3 (36 cu mi) | Paisano Volcano tephra | [8] [54] | ||
| Davis Mountains | Texas | 36.51 ± 0.05 | 210 km3 (50 cu mi) | Adobe Canyon and Limpia formations | [8] [54] | ||
| Davis Mountains | Texas | 36.82 ± 0.08 | 1,250 km3 (300 cu mi) | Flood rhyolites, rhyolite domes, and Gomez tuff | [8] [54] | ||
| Muir Caldera | Hidalgo | New Mexico | 37 | 300 km3 (72 cu mi) | 26 km × 18 km (16 mi × 11 mi); Woodhaul Canyon tephra | [8] [24] [55] | |
| Infernito Caldera | Texas | 37.5 ± 0.5 | 85 km3 (20 cu mi) | 12 km (7.5 mi); Buckshot tuff | [8] [24] | ||
| Thomas Caldera | Millard | Utah | 39 | 400 km3 (96 cu mi) | 16 km × 25 km (9.9 mi × 15.5 mi); Mount Laird tuff | [8] [24] | |
| Twin Peaks Caldera | Custer | Idaho | 45 | 500 km3 (120 cu mi) | 20 km (12 mi); Challis volcanic field; Challis Creek tuff | [8] [56] | |
| Van Horn cauldron complex | Custer | Idaho | 46 ± 0.6 | 34 km × 48 km (21 mi × 30 mi); Challis volcanic field; Elis Creek tuff | [8] [57] | ||
| Silver Bell Caldera | Arizona | 55.8 | 8 km (5.0 mi); Mount Laird tuff | [8] [58] | |||
| Silver Bell Caldera | Arizona | 68 | 150 km3 (36 cu mi) | 8 km (5.0 mi); Lithic tuff | [8] [24] | ||
| Tucson Mountain Caldera | Pima | Arizona | 73 | 500 km3 (120 cu mi) | 25 km (16 mi); Cat Mountain tuff | [8] [28] [59] |