Middle Devonian


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Middle Devonian

[′mid·əl di′vō·nē·ən]
(geology)
The geologic epoch occurring between the Upper and Lower Devonian, beginning approximately 385,000,000 years ago.
References in periodicals archive ?
The Angowice-1 is planned to drill to a total depth of approximately 3,400 meters with multiple targets in the middle and lower Zechstein and the upper and middle Devonian.
The potash deposits found in Saskatchewan are believed to have formed over 350 million years ago as a result of the final stage of evaporative concentration of sea water in a middle Devonian sea.
They cover the lower Silurian of western Ohio; Bourbon and springs in the Inner Bluegrass region of Kentucky; temporal and spatial scales of stream study in west-central Ohio; the golden Ordovician, Silurian seas, and Pleistocene ice; downtown and the Great Dayton Flood of 1913; and fossil collecting from the Middle Devonian silica formation in Paulding County.
An estuarine assemblage from the Middle Devonian Trout Valley Formation of northern Maine.
This USGS assessment is an estimate of continuous gas and natural gas liquid accumulations in the Middle Devonian Marcellus Shale of the Appalachian Basin.
The Middle Devonian plants with wood are shrubs or trees of very small stature.
Q I found this interesting fossil while splitting Middle Devonian limestone at Hungry Hollow, Ontario.
KEY WORDS: marine trace fossils, Middle Devonian, eastern Pennsylvania, Mahantango Formation
The Middle Devonian transgression extended across the most of Estonia and possibly also a large portion of the Fennoscandian Shield.
A Paleontologic Analysis of the Middle Devonian Bell Shale, Michigan.