Results 101 to 110 of about 32,377 (248)

The marine Devonian stratigraphy of Great Britain [PDF]

, 2011
Exposed marine Devonian rocks of Great Britain are in South-West England where successions together span most of the Devonian Period. The Geological Conservation Review (GCR) sites of the volume are located in Cornwall and Devon, the latter providing the
B.E. Leveridge, Shail, R.K., R.K. Shail, Leveridge, B.E.   +3 more
core   +1 more source

New cranial material of the acanthothoracid placoderm Palaeacanthaspis vasta from the Lower Devonian of Podolia—phylogenetic and taxonomic significance [PDF]

Acta Palaeontologica Polonica, 2021
VINCENT DUPRET, HUBERT SZANIAWSKI, MAREK DEC, PIOTR SZREK   +3 more
doaj  

Devonian

, 1997
During Early and Middle Devonian time, carbonate successions were deposited on the Mackenzie Platform in the east, on the Yukon Stable Block in the west, and on two small isolated platforms: the White Mountains Platform in the north and the Royal Mountain Platform in the south. During the same time interval, successions consisting largely of shale were
openaire   +1 more source

Devonian lamprophyres from Mt Lyell, western Tasmania [PDF]

, 1992
Mica concentrated from a post-cleavage lamprophyre occurring at the Prince Lyell Mine, Queenstown, has yielded a K-Ar age of 363±3 Ma (latest Devonian).
Sutherland, FL, PW Baillie (16138640), Baillie, PW, FL Sutherland (15976370)   +3 more
core   +1 more source

Devonian plates.

, 1913
Lower devonian plates xvii-xcviii.--Middle devonian plates vii-xliv.--Upper devonian plates xlv-lxxiii.Mode of access ...
Maryland Geological Survey.
core  

From Siliciclastics to Carbonates and Black shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscapes of the Volga-Ural Petroleum Province

Georesursy
Analyses of the three predominant types of sedimentation – siliciclastic, carbonate and black shale – revealed their discontinuity/continuity across various facies environments within the Middle and Late Devonian of the central part of the Volga-Urals ...
V. V. Silantiev, D. N. Miftakhutdinova, N. G. Nurgalieva   +2 more
doaj   +1 more source

Bioerosion in the Late Devonian placoderm remains from the Holy Cross Mountains, Poland

Acta Palaeontologica Polonica
We report the first occurrence of trace fossils in placoderm bones from the Upper Devonian of the Holy Cross Mountains. A taxonomic analysis of three ichnogenera revealed the earliest evidence of Sulculites (ie., Sulculites bellus), characterised by ...
Patrycja G. Dworczak, Piotr Szrek, Olga Wilk   +2 more
doaj   +1 more source

The start-perranporth zone- transpressional reactivation across a major basement fault in the variscan orogen of S.W. England [PDF]

, 1994
The Start-Perranporth Zone is one of a number of E-W trending zones in S.W. England, which are characterised by an anomalous and structurally complex deformation history, and which are thought to reflect the influence of pre-existing basin architecture ...
Steele, Simon Andrew
core  

Early-Devonian intrusive magmatism of the Urals as indicator critical stage Paleozoic history mobile belt

Литосфера, 2015
It is established that during all-Uralian stage of mantle-type magmatism of Early Devonian age (410-393 Ma) the mantle Ordovician-Silurian magmatism was changed by mantle-crustal and crustal types.
G. B. Fershtater
doaj  

The Economic Geology of The Iowa Devonian [PDF]

, 1970
The Devonian System, in Iowa, is exposed in a belt about 50 miles wide extending along a line from Mason City to Muscatine. With the exception of the Shell Rock Formation the Upper Devonian is essentially elastic, dominantly shale. The Middle Devonian is
Dorheim, Fred H.
core   +1 more source