Results 31 to 40 of about 178 (157)

Late Paleocene to early Oligocene dinoflagellate cysts of the Zagros basin, west Iran (palaeopalynology and palynostratography)

open access: yesJournal of Applied Sciences and Environmental Management, 2015
Palynological investigation about 120 samples from 460m thick outcrop section of late Paleocene to early Oligocene of the Pabdeh Formation, southwestern in Iran yield 55 species of dinoflagellate results to defined 7 biozone.
JN Ali Akbar, GN Ebrahim
doaj   +1 more source

Exhuming the Top End of North America: Episodic Evolution of the Eurekan Belt and Its Potential Relationships to North Atlantic Plate Tectonics and Arctic Climate Change

open access: yesTectonics, Volume 38, Issue 12, Page 4207-4228, December 2019., 2019
Abstract We present the first low‐temperature thermochronology data from northernmost Ellesmere Island (Canadian Arctic), along with palynological data from Paleogene sediments. Our study area is part of the >2,500‐km‐long Eurekan deformation belt that formed across the High Arctic during the Eocene.
Agni Vamvaka   +6 more
wiley   +1 more source

Paleogene dinoflagellate cysts and thermal maturity from Pabdeh Formation ( Zagros basin, west of Iran)

open access: yesJournal of Applied Sciences and Environmental Management, 2015
Palynological investigation on 132 samples from the 428m thick outcrop section of Late Paleocene to Early  Oligocene of the Pabdeh Formation in southwestern Iran yielded 55 species of dinoflagellate cysts and allowed  establishment of seven biozones ...
AA Jafar Nezhad   +3 more
doaj   +1 more source

Palaeoglaciations in the Polar and Subpolar Ural Mountains

open access: yesBoreas, EarlyView.
The Ural Mountains form a major physiographic boundary between the East European Plain and West Siberia, both repeatedly glaciated during the Pleistocene by the Barents–Kara ice sheet. Although the present‐day topography reflects significant glacial modification, the extent, chronology and interaction of mountain glaciers with the Barents–Kara ice ...
Bartosz Kurjanski   +6 more
wiley   +1 more source

PALYNOSTRATIGRAPHY OF THE MUFARA FORMATION (MIDDLE-UPPER TRIASSIC, SICILY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2002
The study of 10 sections of the Mufara Formation in northern Sicily yielded four palynomorph associations ranging in age from late Ladinian/early Carnian to late Carnian, and identified a trend in the compositional evolution of the assemblages within the
NICOLETTA BURATTI, ALEXIS CARRILLAT
doaj   +1 more source

Shifting the Paradigm: Redefining the Chronostratigraphy of the Triassic Rewan Group, Bowen Basin, Australia

open access: yesBasin Research, Volume 38, Issue 3, May–June 2026.
New U–Pb zircon dating shows the Rewan Group was deposited between ~250 and 233 million years ago and that sedimentation shifted across the basin through time, with earlier deposition in the foredeep and later deposition in the back bulge. Testing multiple dating approaches and grain‐selection strategies improves confidence in these age estimates and ...
Matthew Scipione   +6 more
wiley   +1 more source

Initiation of the Ferrar Large Igneous Province Started in Southern North Victoria Land, Antarctica, With Shallow Emplacement of Sills Causing Magma‐Soft‐Rock Interaction and Phreatomagmatic Eruptions

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Early Jurassic volcanism was in the southern north Victoria Land portion of the Ferrar Large Igneous Province preceded by multiple phases of shallow‐level intrusions of Ferrar sills into the 300 m thick cover of sedimentary rocks of the Triassic‐Jurassic Victoria Group.
Lothar G. Viereck   +7 more
wiley   +1 more source

Middle–Upper Jurassic palynology of the South Sallum well, North Western Desert, Egypt

open access: yesEgyptian Journal of Petroleum, 2018
Palynological analyses have been carried out on some samples of Middle–Upper Jurassic from the South Sallum well, North Western Desert, Egypt. A refinement of the original chronostratigraphy has been suggested and the stages of Bathonian – Callovian and ...
Tarek F. Mostafa   +2 more
doaj   +1 more source

Permian palynostratigraphy: a global overview

open access: yesGeological Society, London, Special Publications, 2016
Abstract Permian palynostratigraphic schemes are used primarily to correlate coal- and hydrocarbon-bearing rocks within basins and between basins, sometimes at high levels of biostratigraphic resolution. Up to now, their main shortcoming has been the lack of correlation with schemes outside the basins, coalfields and hydrocarbon ...
openaire   +2 more sources

Preliminary Palynostratigraphic Age Assessment of Victoria and Ferrar Group Deposits in the Central Prince Albert Mountains, Victoria Land, East Antarctica

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Composition and age span of sedimentary deposits of the Transantarctic Basin system vary between different regions of the Transantarctic Mountains. Moreover, whereas the regional stratigraphic successions have been very well established in some areas of East Antarctica, such as the Allan Hills or the Beardmore Glacier, they remain virtually unexplored ...
Valentina Corti   +4 more
wiley   +1 more source

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