description Lo-En Guyot Overview
Lo-En Guyot, also known as Hess, is a flat-topped seamount in the Marshall Islands of the western Pacific. It is an Albian-Campanian guyot, a submerged volcanic edifice whose summit was shaped near sea level before later subsidence. Lo-En was drilled at Site 872 during Ocean Drilling Program Leg 144, and the recovered material is used to study Cretaceous carbonate platforms and the drowning of Pacific guyots. [ODP reference](https://www-odp.tamu.edu/publications/144_SR/VOLUME/CHAPTERS/sr144_02.pdf)
help Lo-En Guyot FAQ
What is Lo-En Guyot?
Lo-En, also known as Hess, is a flat-topped seamount, or guyot, located in the Marshall Islands region of the western Pacific. Its flat summit formed near sea level before the volcanic edifice subsided and drowned beneath the ocean surface.
How old is Lo-En Guyot?
It is dated to the Albian through Campanian stages, meaning its volcanic and shallow-water history falls within the Cretaceous period, roughly 110 to 75 million years ago. That age range reflects when its summit was near sea level before subsidence.
Was Lo-En Guyot ever drilled by scientists?
Yes, Lo-En was drilled at Site 872 during an Ocean Drilling Program leg in 1992. The cores recovered shallow-water carbonate material from its summit, confirming it was once at or near sea level before drowning.
What is a guyot, and why is Lo-En a good example?
A guyot is a flat-topped submarine volcano, a shape created when a volcanic island's summit is eroded near sea level and then carried below the surface as the plate subsides. Lo-En is a textbook example, preserving that flat summit and a Cretaceous age that documents the sinking of the western Pacific seafloor.
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