Earth: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
References
- ↑ "Ask Rufus: Tombigbee sharks and Mississippi volcanoes". The Commercial Dispatch. http://www.cdispatch.com/opinions/article.asp?aid=47721.
- ↑ 2.0 2.1 Mellen, Frederic Francis (April 18, 1958). "Cretaceous Shelf Sediments of Mississippi, Mississippi State Geological Survey, Bulletin 85". pp. 23–24. https://www.mdeq.ms.gov/wp-content/uploads/2017/06/Bulletin-85.pdf.
- ↑ Pitts, Bill. "NSV Whatever Happened To...?". http://www.newsouthernview.com/pages/nsv_wht_jacksons_volcano.html.
- ↑ Cox, Randel Tom (September 2002). "The Mississippi Embayment, North America: A first order continental structure generated by the Cretaceous superplume mantle event". Journal of Geodynamics 34 (2): 163–176. doi:10.1016/S0264-3707(02)00019-4. Bibcode: 2002JGeo...34..163C. https://www.researchgate.net/figure/Age-data-for-Cretaceous-igneous-rocks-in-the-Mississippi-Embayment-and-vicinity-Ages-are_fig2_248515758.
- ↑ Baksi, Ajoy (1997). "The Timing of Late Cretaceous Alkalic Igneous Activity in the Northern Gulf of Mexico Basin, Southeastern USA". The Journal of Geology 105 (5): 629–643. doi:10.1086/515966. Bibcode: 1997JG....105..629B.
- ↑ Merrill, Robert (1981). "Genesis of bentonite in the Upper Cretaceous strata of Monroe County, Mississippi". Report of Student Investigations (Mississippi Mineral Resources Institute) (University of Mississippi Library, Special Collections) 820. http://umiss.lib.olemiss.edu/record=b1432684%7ES0.
- ↑ Sundeen, Daniel A.; Cook, Philip L. (1977-08-01). "K-Ar dates from Upper Cretaceous volcanic rocks in the subsurface of west-central Mississippi" (in en). GSA Bulletin 88 (8): 1144–1146. doi:10.1130/0016-7606(1977)88<1144:KDFUCV>2.0.CO;2. ISSN 0016-7606. Bibcode: 1977GSAB...88.1144S. https://pubs.geoscienceworld.org/gsabulletin/article-abstract/88/8/1144/202181/K-Ar-dates-from-Upper-Cretaceous-volcanic-rocks-in.
- ↑ Livesey, Christina Lee (1990). "Petrogenesis and Provenance of Epiclastic Volcanic Cobbles From the Cretaceous Woodbine Formation, Southwest Arkansas.". https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?article=5932&context=gradschool_disstheses.
[ ⚑ ] 33°02′57″N 90°34′25″W / 33.049040°N 90.573494°W
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