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When Kīlauea lay dormant between 19, Mauna Loa became active, and when the latter remained quiet from 1952 to 1974, the reverse was true.This is not always the case; the 1984 eruption of Mauna Loa started during an eruption at Kīlauea, but had no discernible effect on the Kīlauea eruption, and the ongoing inflation of Mauna Loa's summit, indicative of a future eruption, began the same day as new lava flows at Kīlauea's Pu Mauna Loa is slumping eastward along its southwestern rift zone, leveraging its mass into Kīlauea and driving the latter eastward at a rate of about 10 cm (4 in) per year; the interaction between the two volcanoes in this manner has generated a number of large earthquakes in the past, and has resulted in a significant area of debris off of Kīlauea's seaward flank known as the Hilina Slump.The slow drift of the Pacific Plate will eventually carry Mauna Loa away from the hotspot within 500,000 to one million years from now, at which point it will become extinct.
Lava eruptions from Mauna Loa are silica-poor and very fluid, and they tend to be non-explosive.
Mauna Loa has probably been erupting for at least 700,000 years, and may have emerged above sea level about 400,000 years ago.
The oldest-known dated rocks are not older than 200,000 years.
The volcano's magma comes from the Hawaii hotspot, which has been responsible for the creation of the Hawaiian island chain over tens of millions of years.
The northeastern rift zone takes the form of a succession of cinder cones, the most prominent of which the 60 m (197 ft) high Puu Ulaula, or Red Hill.
There is also a less definite northward rift zone that extends towards the Humuula Saddle marking the intersection of Mauna Loa and Mauna Kea.However, analysis of the chemical composition of lavas from the two volcanoes show that they have separate magma chambers, and are thus distinct.Nonetheless, their proximity has led to a historical trend in which high activity at one volcano roughly coincides with low activity at the other.Turner Gas Company’s historical footprint and expertise focuses on Propane (LPG). Turner Gas Company is one of the largest independent transporters and fastest growing marketers focused on Natural Gas Liquids and Crude in the Bakken (North Dakota, Montana) and Niobrara (Wyoming, Colorado) oilfield plays.Today we are the market leader and one of the largest independent transporters and marketers of Wholesale Propane in Western and North Central U. Turner Gas Company is family-owned and has successfully served customers for over 75 years.