Herbert Ernest Gregory (October 15, 1869 – January 23, 1952)[1] was a Yale University geologist well known for his early 20th-century explorations of the Colorado Plateau in Arizona and Utah.

[3] Gregory worked as a civil engineer for Boston & Maine Railroad from 1890 to 1891 before becoming an instructor at Chadron Academy from 1891 to 1893.

[3] He was a student at Harvard University under American geographer William Morris Davis.

[4][5] From 1919 to 1936 he served as director of the Bishop Museum in Hawaii, where, in 1961, after his death, he was honored by a medal named after him.

Among many other achievements, he was the first to name and describe the Upper Triassic Chinle Formation, which is famous for preserving extensive fossil evidence of Late Triassic terrestrial ecosystems, including fossilized logs.