Results 11 to 20 of about 15,423 (247)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+6 more sources

PALEONTOLOGY AND PALEOGEOGRAPHY OF THE TETHYIAN AGGLUTINATED BENTHIC FORAMINIFERAL SPECIES OF THE GENUS SPIROPLECTINELLA [PDF]

open access: yesGeological Behavior, 2022
Thirty three small diagnostic benthic foraminiferal species of the Textulariid genus Spiroplectinella are common in the Late Cretaceous-Neogene rocks from many Tethyan localities: North Atlantic (USA, Mexico, Caribbean), South America (Brazil, Argentina,
Haidar Salim Anan
doaj   +1 more source

New evidence for the antiquity of Desmostylus (Desmostylia) from the Skooner Gulch Formation of California

open access: yesRoyal Society Open Science, 2023
Desmostylus is an extinct marine mammal genus that belongs to Desmostylia, a clade of extinct herbivorous mammals. While desmostylian remains are widely reported from Paleogene and Neogene marine strata of the North Pacific Rim, occurrences of the genus ...
Kumiko Matsui, Nicholas D. Pyenson
doaj   +1 more source

The Neogene and Quaternary deposits of the Barcelona city through the high-speed train line

open access: yesGeologica Acta, 2020
A total of 208 boreholes with continuous core sampling, drilled for the construction of the high-speed train line through the city of Barcelona and other nearby infrastructures, were studied.
J.M. Salvany, J. Aguirre
doaj   +1 more source

First Miocene megafossil of arrowhead, alismataceous plant Sagittaria, from South America [PDF]

open access: yesActa Palaeontologica Polonica, 2021
The first pre-Quaternary representative of Alismataceae from South America is reported based on achenes of Sagittaria montevidensis from the Palo Pintado Formation (upper Miocene) in the south of Salta Province, Argentina.
Juan M. Robledo   +3 more
doaj   +1 more source

The karst and palaeokarst of North and North-East Greenland – physical records of cryptic geological intervals

open access: yesGEUS Bulletin, 2022
Carbonate rocks of Neoproterozoic to Silurian age are abundantly distributed around the coasts of North and North-East Greenland. Palaeokarst horizons are particularly well developed within the Portfjeld Formation (Ediacaran – earliest Cambrian) and ...
M. Paul Smith, Gina E. Moseley
doaj   +1 more source

The Volcanic History of the UNESCO Global Geopark Bohemian Paradise [PDF]

open access: yesGeoconservation Research, 2023
Central Europe and the area of the UNESCO Global Geopark Bohemian Paradise have been affected by global tectonic events, especially during the last 500 million years. Volcanic phenomena are the most striking traces today of such past tectonic events.
Vaclav Mencl   +2 more
doaj   +1 more source

Analysis of Neogene provenance in Zhahaquan area, Qaidam Basin

open access: yes地质科技通报, 2023
It is generally believed that the provenance of the Neogene sandbar reservoir in the Zhahaquan Oilfield in the western Qaidam Basin is consistent with that of the Paleogene.
Shuangping Pan   +5 more
doaj   +1 more source

The paleoecology of the Late Miocene mammals from the Optima Local Fauna of Oklahoma, USA [PDF]

open access: yesActa Palaeontologica Polonica, 2022
The Optima Local Fauna represents an important glimpse into the ecological transition between savannah and grassland during the late Miocene (Hemphillian) of what is now the southcentral Great Plains of North America.
JOSEPH A. FREDERICKSON   +6 more
doaj   +1 more source

Investigation of alkaline basalts of Joupar block located in south of Kerman [PDF]

open access: yesپترولوژی, 2019
In the western part of the Joupar Mountains, a set of Neogene basic rocks cover the felsic rocks. Volcanic rocks suite consisting of basalt- andesite- dacite and rhyolite.
Farzaneh Arzhangnezhad   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy