Level Mountain
| Level Mountain | |
|---|---|
Satellite image of Level Mountain (middle) and Heart Peaks (upper-left corner). This image is approximately 80 km (50 mi) E-W.
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| Highest point | |
| Peak | Meszah Peak |
| Elevation | 2,166 m (7,106 ft) |
| Coordinates | 58°28′43″N 131°26′14″W / 58.47861°N 131.43722°W |
| Dimensions | |
| Length | 70 km (43 mi) |
| Width | 45 km (28 mi) |
| Area | 1,800 km2 (690 sq mi) |
| Volume | 860 km3 (210 cu mi) |
| Geography | |
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| Country | Canada |
| Province | British Columbia |
| District | Cassiar Land District |
| Range coordinates | 58°23′26″N 131°24′06″W / 58.3906°N 131.4017°WCoordinates: 58°23′26″N 131°24′06″W / 58.3906°N 131.4017°W |
| Topo map | NTS 104J/06 |
| Geology | |
| Formed by | Shield volcano, stratovolcano, lava domes, subglacial volcanoes |
| Age of rock | Neogene-to-Quaternary |
| Volcanic arc/belt | Northern Cordilleran Volcanic Province |
| Last eruption | Unknown |
Level Mountain is an immense volcanic massif in the Northern Interior of British Columbia, Canada. It is 50 km (31 mi) north-northwest of Telegraph Creek and 60 km (37 mi) west of Dease Lake on the Nahlin Plateau. With a maximum elevation of 2,166 m (7,106 ft), it is the third highest of five large volcanic complexes in the Northern Cordilleran Volcanic Province (NCVP). Much of the massif is gently-sloping; when measured from its base, Level Mountain is about 1,100 m (3,600 ft) tall, slightly taller than its neighbour to the northwest, Heart Peaks. The lower broader half of Level Mountain consists of a shield-like edifice while its upper half has a more steep, jagged profile. Its summit is dominated by the Level Mountain Range, a small mountain range with prominent peaks cut by deep valleys. These valleys serve as a radial drainage for several small streams that flow across the volcano. Meszah Peak is the only named peak in the Level Mountain Range.
The massif is about 15 million years old, with volcanism continuing up until geologically recent times. Three constructive stages have been identified at Level Mountain. The first stage commenced 14.9 million years ago with the eruption of voluminous lava flows. These lavas assembled to create a large shield volcano. The second stage began 7.1 million years ago to form a complex stratovolcano located centrally atop the shield. A series of lava domes were established during the third stage, which started 4.5 million years ago. Renewed activity might have occurred in the last 11,000 years. A wide range of rock types were produced during the long volcanic history of Level Mountain, of which alkali basalts and ankaramites are the most common. They were deposited by different types of volcanic eruptions characterized by passive lava flows and explosivity.
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Wikipedia