Midnight Volcano

Midnight Volcano is believed to be a buried extinct volcano in southern Humphreys County, Mississippi. It is named after the nearby town of Midnight, Mississippi. During the time it was active, Midnight Volcano may have been a volcanic island in the Mississippi Embayment.^[1]

The volcanic activity in the area is associated with the Monroe Uplift,^[2][3] and igneous rocks in the region have been dated from 84 to 73 Ma.^[4] A well drilled in Humphreys County found around 600 m (2000 ft) of volcanic rock, starting 1110 m (3641 ft) below the surface at the shallowest.^[5] The most recent measured volcanic rock was dated to 66 Ma,^[6] while older (and deeper) samples were dated at 81 and 94 Ma.^[7]

These most recent deposits roughly coincide with the activity of Jackson Volcano, another buried volcano southeast of Midnight^[8]

Volcanic debris from this volcanism was also found in the "Coffee sands", a Cretaceous sand layer to the north.^[2]

See also

• Jackson Volcano
• Mississippi Embayment
• Bermuda Hotspot
• List of Volcanoes in the United States