Complex sentence: In another report on Tennessee earthquakes, "Tennessee Earthquake History", the USGS fails to mention the 1865 earthquake and assigns a greater Mercalli scale intensity of VIII to the 1843 temblor.
Split into simpler sentences: In another report on Tennessee earthquakes, "Tennessee Earthquake History", the USGS fails to mention the 1865 earthquake. It assigned an estimate of greater Mercalli scale intensity of VIII to the 1843 temblor.