Results 31 to 40 of about 10,959 (166)

Geochronology and geochemistry of the Late Jurassic-Early Cretaceous Sangxiu Formation volcanic rocks of the Chegu region, Southern Tibet

open access: yesFrontiers in Earth Science, 2023
The evolution patterns of the Neo-Tethys Himalayas have been a major topic of research, particularly in the Neo-Tethys Ocean. The geological field investigations were conducted in the Late Jurassic-Early Cretaceous Sangxiu Formation in the Tsomei Longzi ...
Feng Wu   +11 more
doaj   +1 more source

PALYNOLOGY EVIDENCES OF HITHERTO UNRECOGNISED JURASSIC SEDIMENTATION IN RAJMAHAL BASIN, INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2004
In Rajmahal Basin the Upper Gondwana (Mesozoic) sequences are represented by the Dubrajpur and Rajmahal Formations. Palynologically, the Dubrajpur Formation is shown to be a time transgressive unit spanning from Early Triassic to Early Cretaceous. Out of
ARCHANA TRIPATHI
doaj   +1 more source

New data on the age of an Upper Cretaceous clastic-carbonate succession in Brežđe (NW Serbia)

open access: yesGeologia Croatica, 2014
Radiolarian assemblages of Late Cretaceous age were studied in a carbonate-clastic section from the Cretaceous sedimentary cover that unconformably overlies Triassic sediments of the Jadar Block. According to the identified radiolarian associations, the
Nevenka Djeric, Nataša Gerzina
doaj   +1 more source

The oldest elasmosaurs (Sauropterygia, Plesiosauria) from Antarctica, Santa Marta Formation (upper Coniacian? Santonian–upper Campanian) and Snow Hill Island Formation (upper Campanian–lower Maastrichtian), James Ross Island [PDF]

open access: yesPolar Research, 2012
Elasmosaurs are recorded for the first time in the Lachman Crags Member (Beta Member) of the Santa Marta Formation (lower Campanian) and in the Herbert Sound Member of the Snow Hill Island Formation (upper Campanian).
José P. O'Gorman
doaj   +1 more source

Late Jurassic Early Cretaceous

open access: yes
The sedimentary and structural development in the Late Jurassic-Early Cretaceous period in the Netherlands is largely governed by the Late Cimmerian rift phase and the subsequent post-rift. The rifting affected the Dutch Central Graben in the northern offshore first.
Verreussel, R.M.C.H.   +3 more
openaire   +2 more sources

Late Cretaceous

open access: yes
The Upper Cretaceous is one of the rare stratigraphic intervals in the Netherlands that can be studied in outcrop. The quarrying of chalky limestone and interbedded chert nodules in South Limburg has contributed to the study of these rocks and their notable fossil content.
Lochem, H. van, Vis, G.J., Jagt, J.W.M.
openaire   +2 more sources

VERTEBRATES OF THE MARÍLIA FORMATION (LATE MAASTRICHTIAN) FROM THE PEIRÓPOLIS PALEONTOLOGICAL SITE: TOWARD A BETTER UNDERSTANDING

open access: yesEarth Sciences Research Journal, 2009
The Peirópolis paleontological site (Late Cretaceous, Maastrichtian) in Minas Gerais State, Brazil yielded an important assemblage of fossil vertebrates.
A. Candeiro Carlos Roberto
doaj  

Palaeoclimatic characteristics of the Late Jurassic-Cretaceous in Emei area, Sichuan Basin, China

open access: yesFrontiers in Earth Science
The Late Mesozoic is a typical period for studying the greenhouse climate and the interaction of the Eearth’s systems. To expound the interaction between the evolution process of the terrestrial surface system and the environment in the Late Jurassic ...
Shuxia Li   +7 more
doaj   +1 more source

Intraoceanic Subduction System Within the Neo‐Tethys: Evidence From Late Cretaceous Arc Magmatic Rocks of the Eastern Himalaya

open access: yesGeochemistry, Geophysics, Geosystems, 2023
The tectonic evolution of the Neo‐Tethys Ocean remains highly controversial, with several models existing in the community that conflict with each other. Here, we present new geochronologic and geochemical data for orthogneisses and amphibolites from the
Zeming Zhang   +5 more
doaj   +1 more source

The first iguanian lizard from the Mesozoic of Africa [PDF]

open access: yesRoyal Society Open Science, 2016
The fossil record shows that iguanian lizards were widely distributed during the Late Cretaceous. However, the biogeographic history and early evolution of one of its most diverse and peculiar clades (acrodontans) remain poorly known.
Sebastián Apesteguía   +3 more
doaj   +1 more source

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