Results 61 to 70 of about 3,600 (212)
Paleoenvironment of the Dalichai Formation, northeastern Semnan [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2015 Palaeonvironment of the Dalichai Formation, northeastern Semnan, is envisaged based on 69 samples studied palynologically. Diverse and well-preserved palynofloras, viz., miospores, dinoflagellate cysts, foraminiferal test linings, acritarchs, wood debris
Fereshteh Sajjadi +4 more
doaj +2 more sources
Carnets de Géologie, 2005 The study of acritarchs in Russia was initiated by Naumova and Timofeev in the early 50s. Their initial results showed the high potential of these microfossils for biostratigraphy and was followed by a remarkable degree of research activity in the 70s ...
Raevskaya Elena
doaj
Palaeontology, Volume 67, Issue 5, September/October 2024.Abstract Aggregated clusters of acritarchs are relatively common among assemblages of organic‐walled microfossils, yet such associations have received relatively little attention. Here we report a new diversity of acritarch clusters from the early Cambrian Buen Formation of North Greenland.
Elise Wallet +2 more
wiley +1 more source
The casa colorada formation at the Quebrada de Moya (cambrian-ordovician): contributions to the chronostratigraphy of a classical locality in the cordillera oriental of Jujuy (argentina) [PDF]
, 2007 La Formación Casa Colorada constituye una potente secuencia silicoclástica aflorante en el sector medio de la quebrada de Humahuaca en la provincia de Jujuy.
Aceñolaza, Guillermo Federico +2 more
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Evidence for Low‐Pressure Crustal Anatexis During the Northeast Atlantic Break‐Up
Geochemistry, Geophysics, Geosystems, Volume 25, Issue 7, July 2024.Abstract While basaltic volcanism is dominant during rifting and continental breakup, felsic magmatism may be a significant component of some rift margins. During International Ocean Discovery Program (IODP) Expedition 396 on the continental margin of Norway, a graphite‐garnet‐cordierite bearing dacitic unit (the Mimir dacite) was recovered in two ...
A. M. Morris +29 more
wiley +1 more source
Paleontological evidence for Late Cambrian in the Arburese area, SW Sardinia
Carnets de Géologie, 2005 New palynological investigations allowed a better definition of the age of terrigenous deposits of the Monte Fonnesu tectonic Unit, exposed in the Arburese area (SW Sardinia).
Musumeci Giovanni +3 more
doaj
Fountain Journal of Natural and Applied Sciences (FUJNAS), 2020 Palynological and palynofacies analyses were used to investigate the paleoenvironments and hydrocarbon potential of the Campanian-Maastrichtian Enugu Shale, Anambra Basin, Nigeria.
M. A. Olayiwola +2 more
doaj +1 more source
Systematic Revision of Elektoriskos williereae and Dilatosphaera williereae (Acritarchs) and its Bearing on Silurian (Llandoverian) Stratigraphy [PDF]
, 1989 Revision of Elektoriskos williereae (G. & M. DEFLANDRE) VANGUESTAINE, 1979 and Dilatisphaera williereae (MARTIN) LISTER, 1970, the primary types Of which come from the Brabant Massif in Belgium, underlines the evidence for their stratigraphic value in ...
Martin, F.
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Sedimentology, Volume 71, Issue 4, Page 1245-1269, June 2024.Abstract The characterization of carbonate production on rift basins is critical for understanding the nucleation and demise of reefs in tectonically active areas. A new petrographic and mineralogical analysis of Cambrian strata from the Avalon Zone in Newfoundland, based on scanning electron microscopy – back‐scattered electron detector and Raman ...
José Javier Álvaro, Andrea Mills
wiley +1 more source
New biostratigraphic and chronostratigraphic data from the Sautou formation and adjacent strata (Cambrian, Givonne inlier, Revin group, Northern France) and some lithostratigraphic and tectonic implications [PDF]
, 2005 In the western part of the Givonne Inlier, the “Falizette” and the “Claire-Terne de la Borne” rivers exhibit sections described as belonging, in ascending order, to the La Chapelle (Rv2), Illy (Rv3) and Sautou (Rv4) Formations.
Léonard, R., Vanguestaine, M.
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