Results 261 to 270 of about 8,234,031 (344)

Integrated geophysical prospecting for deep ore detection in the Yongxin gold mining area, Heilongjiang, China. [PDF]

Sci Rep
Yin Y, Chen J, Zhao Z, Yang Y, Li C, Li H, Zhao X.   +6 more
europepmc   +1 more source

Palynological reconnaissance of the Lower Carboniferous of Spitsbergen

Micropaleontology, 1961
Microspores are described from three representative rock samples from the Billefjorden sandstones of the lower Carboniferous of central Vestspitsbergen. The age of this series is considered to range from Tournaisian to at least Visean and perhaps Namurian. One new genus, Velosporites, and thirteen new species are erected.
Hughes, N. F., Playford, G.
semanticscholar   +4 more sources

Structural constraints on Lower Carboniferous shale gas exploration in the Craven Basin, NW England [PDF]

Petroleum Geoscience, 2020
Detailed interpretation of a 3D seismic data volume reveals the detrimental effect that post-depositional tectonic deformation has had on buried Lower Carboniferous (Dinantian–Namurian) shales and its consequences for shale gas exploration in the SW part
I. Anderson, J. Underhill
semanticscholar   +2 more sources

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Some New Lower Carboniferous Gasteropoda

Quarterly Journal of the Geological Society of London, 1912
Eight species are here described, all characterized by the presence of a band on the whorls: in seven it is probably the result of a sinus or slit in the outer lip, but in the eighth it is merely ornamental, as the lines of growth pass over it. These species are referable to six genera or subgenera, five of which are new, namely
J. Longstaff
openaire   +2 more sources

The Lower Carboniferous of the Skyreholme Anticline, Yorkshire

Geological Magazine, 1928
The area east of the Burnsall Knolls in the north-east Lowlands of Craven is occupied by limestones of the Northern facies type, apparently unaffected by the presence of the North Craven Fault.The beds are overlain unconformably by the Grassington Grit, which, overstepping the flanks of the Skyreholme anticlne, thus continues to the south the ...
F. W. Anderson
openaire   +2 more sources

Tumors in the Lower Carboniferous

Science, 1927
R. L. Moodie
openaire   +3 more sources

LOWER CARBONIFEROUS PALAEOGEOGRAPHY OF THE BRITISH ISLES

Proceedings of the Yorkshire Geological Society, 1958
Summary Palaeogeography rests in a well-founded stratigraphy. Rigidly defined palaeontological zones are of very limited use in neritic rocks, and their criteria must be relaxed and adapted to changing fossil associations to meet the needs of wide-ranging regional studies: in particular, Vaughan’s scheme, though the most convenient, is ...
T. N. George
openaire   +2 more sources

Lower Carboniferous fauna, Siberia

American Journal of Science, 1926
I. Tolmachoff
openaire   +2 more sources

Lower Carboniferous Algal Microflora, Southwestern Alberta

, 1972
A diverse and relatively prolific Lower Carboniferous algal microflora has been encountered in the Rocky Mountains and Foothills of southwestern Alberta.
A. A. Petryk, B. Mamet
semanticscholar   +2 more sources

Biogeography of Lower Carboniferous crinoids

Geological Society, London, Memoirs, 1990
Abstract The stratigraphic are ranges of all known crinoid genera of Mississippian and Lower Carboniferous age in western Europe and North America compared. Camerate crinoid distribution was published in 1987 (Lane and Sevastopulo). Inadunate and flexible crinoid ranges are presented here.
N. Gary Lane, G. D. Sevastopulo
openaire   +1 more source