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  • noun

Synonyms for Devonian

from 405 million to 345 million years ago

References in periodicals archive ?
Conodonts (Icriodus woschmidti) found in this series indicate the Lochkovian Stage of the Lower Devonian (Zhivkovich & Chekhovich 1985).
By investing in Kincora, the Bank is promoting modern copper porphyry drill testing and a district scale reconnaissance exploration programme in the Devonian copper belt, alongside high environmental and social management standards and practices.
HORIZON AND LOCALITY: Campbellton Formation, Devonian (Emsian), Atholville, New Brunswick (47[degrees]59.
But all the Silurian, most of the Devonian and a major part of the Carboniferous and Lower Permian sequences are missing.
One area, the Bisoni-McKay, at the south end of the Fish Creek Range, displays an olistostrome, shed eastward during the Late Devonian (early Famennian) from a migrating Antler orogenic forebulge.
The research team, which includes Assistant Professor Sarah Carmichael, is examining the relationship between climate change and changes in the ecosystems in the Devonian period, from 419 to 359 million years ago.
Terrestrialisation was believed to have occurred early in their history, probably during the Devonian period, with allegedly aquatic Proscorpiidae coexisting with terrestrial Mesoscorpionina and 'palaeosterns' until the early Carboniferous (Jeram 1998).
The 13 articles in this collection were presented in earlier form at a series of workshops and conferences held in far-flung locales rich in Devonian features as part of the International Geological Correlation Programme Project 421, devoted to studying the effects on marine and terrestrial ecosystems by the climate changes and sedimentation of the Devonian era.
While Upper Devonian-Lower Mississippian strata appear to be displaced down below normal stratigraphic positions (Bucher 1933; Reidel and others 1982), recent observations of new drill cores and exposures outside of the limit of the disturbance (as proposed by Reidel 1975) indicate that the base of the Upper Devonian inside of the crater is also above, or not displaced from undisturbed elevations (Gabreski and Milam 2010).
The well was targeting the Devonian F2 sands in the ISAS structure and was completed on prognosis and on budget.
In the course of mineralogical and petrophysical studies of the Devonian rocks, extraordinary signatures of authigenic mineralization were observed in the lowermost layers of Narva Regional Stage (RS) in the North East Estonia.
It was sketched by Ernest Shackleton on 17 March 1914 on the back of his menu card for the London Devonian Association's annual dinner for his neighbour, Clive Morison-Bell.
The "younger" Devonian event is characterized by intrusion of peralkaline, metaluminous, and peraluminous granitoid stocks and batholiths.
A Paleontologic Analysis of the Middle Devonian Bell Shale, Michigan.