Results 51 to 60 of about 798 (185)

Lithostratigraphy, geology and geochemistry of the volcanic rocks of the Maligât Formation and associated intrusions on Disko and Nuussuaq, Paleocene of West Greenland

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2018
The Paleocene volcanic rocks in the Nuussuaq Basin on Disko and Nuussuaq comprise the picritic Vaigat Formation (c. 62–61 Ma) and the overlying basaltic Maligât Formation (c. 60 Ma).
Asger Ken Pedersen   +2 more
doaj  

The mesoproterozoic sub-Lifjell unconformity, central Telemark, Norway [PDF]

open access: yesBulletin of the Geological Society of Finland, 2006
The sub-Lifjell unconformity subdivides the traditional Seljord group of the Telemark supracrustals, south Norway, into the Vindeggen and Lifjell groups.
K. Laajoki
doaj   +1 more source

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

open access: yesJournal of Quaternary Science, Volume 41, Issue 5, Page 672-685, July 2026.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin   +2 more
wiley   +1 more source

The Hell Creek Formation, Montana: A Stratigraphic Review and Revision Based on a Sequence Stratigraphic Approach

open access: yesGeosciences, 2020
The Upper Maastrichtian fluvial Hell Creek Formation of the Fort Peck Lake area, Montana (and regional equivalents) is notable for its vertebrate fossils and for the K-Pg mass extinction at or near its upper contact.
Denver Fowler
doaj   +1 more source

Stratigraphical studies on Lake Iidesjärvi sediments. Part 1. Environmental changes and palaeolimnological development [PDF]

open access: yesBulletin of the Geological Society of Finland, 1981
Palaeolimnological results for the small eutrophicated lake Iidesjärvi in the town of Tampere (S. Finland) show that it has been limnologically more or less productive since its isolation from the Ancylus Lake of the Baltic Sea.
P. Alhonen
doaj   +1 more source

Early deglaciation history of the southeastern Baffin Island shelf (Eastern Canadian Arctic Archipelago)

open access: yesJournal of Quaternary Science, Volume 41, Issue 5, Page 686-701, July 2026.
ABSTRACT During the last glacial period, the Laurentide Ice Sheet (LIS) was the largest terrestrial ice sheet on Earth. Its evolution since the Last Glacial Maximum profoundly influenced Earth's geodynamics and surface processes. Investigating the past dynamics of the LIS provides critical insights into how contemporary ice sheets may respond to ...
Alexis P. Belko   +3 more
wiley   +1 more source

Post‐Miocene Transtensional Opening of the Northern Red Sea

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The mechanism of opening, as well as the crustal characteristics of the northern Red Sea are subject of ongoing controversial scientific debate. With the objective of elucidating the nature of rifting in this area, a grid of 2D multi‐channel reflection seismic data was acquired off the Al Wajh carbonate platform (AWCP), and supplemented by ...
Thomas Lüdmann   +4 more
wiley   +1 more source

High‐Resolution Anisian Marine Perturbation by Volcanism in the Eastern Paleo‐Tethys

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Following the end‐Permian mass extinction, the Middle Triassic Anisian Stage was still characterized by environmental perturbations that hindered biological flourishing, yet it remains uncertain whether these persistent Tethyan disturbances were coupled with the closure of the Paleo‐Tethys Ocean.
Zhenyang Lai   +12 more
wiley   +1 more source

Lithostratigraphy of the Upper Oligocene – Miocene succession of Denmark

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2010
This paper presents a revised lithostratigraphic scheme for the uppermost Upper Oligocene – Miocene succession of Denmark. The marine Oligocene Brejning Clay Member is upgraded to formation status and includes the Sydklint Member and the Øksenrade Member (new). The shallow marine and deltaic deposits of mainly Early Miocene age are included in the Ribe
Rasmussen, Erik Skovbjerg   +2 more
openaire   +4 more sources

The Upper Cretaceous Ostravice Sandstone in the Polish sector of the Silesian Nappe, Outer Western Carpathians

open access: yesGeologica Carpathica, 2016
The Ostravice Sandstone Member was identified and described as a lithostratigraphic unit in the Polish part of the Outer Carpathians. This division occurs in the lowermost part of the Godula Formation, is underlain by variegated deposits of the Mazák ...
Cieszkowski Marek   +7 more
doaj   +1 more source

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