Results 1 to 10 of about 64,690 (275)

U-Pb Zircon Geochronology of Detrital and Ash Fall Deposits of the Southern Paraná Basin: A Contribution for Provenance, Tectonic Evolution, and the Paleogeography of the SW Gondwana [PDF]

open access: goldGeosciences, 2023
Zircon U-Pb geochronology was applied to investigate the provenance, depositional ages, and paleogeography of the southwestern Gondwana in detrital and ash fall sediments from Carboniferous to Jurassic succession of the southern Paraná Basin.
Ruy Paulo Philipp   +10 more
doaj   +2 more sources

Marcasite at the Permian‐Triassic Transition

open access: yesGeophysical Monograph Series, Page 377-399., 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.
Elena Lounejeva   +7 more
wiley  

+8 more sources

Early land plant remains from the uppermost Ordovician–?lowermost Silurian Cedarberg Formation of South Africa [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The Cape Supergroup forms a regionally extensive and extremely thick Ordovician to Carboniferous succession of sedimentary rocks in southwestern South Africa.
Charles H. Wellman   +2 more
doaj   +1 more source

Synthesis and Photoluminescence characterization of Sr3La(AlO)3(BO3)4:Eu3+,Sm3+ Phosphor for W-LED

open access: yesФізика і хімія твердого тіла, 2023
A Red emitting with high efficiency Eu3+ doped Sr3La(AlO)3(BO3)4 and Sm3+ doped Sr3La(AlO)3(BO3)4 phosphors  has been synthesized by combustion method, meanwhile, the photoluminescence properties of samples are investigated in detail.
R.M. Yerojwar   +3 more
doaj   +1 more source

Burma Terrane Amber Fauna Shows Connections to Gondwana and Transported Gondwanan Lineages to the Northern Hemisphere (Araneae: Palpimanoidea).

open access: yesSystematic Biology, 2023
Burmese amber is a significant source of fossils that documents the mid-Cretaceous biota. This deposit was formed around 99 Ma on the Burma Terrane, which broke away from Gondwana and later collided with Asia, although the timing is disputed ...
Hannah M. Wood, J. Wunderlich
semanticscholar   +1 more source

Mariana-type ophiolites constrain the establishment of modern plate tectonic regime during Gondwana assembly

open access: yesNature Communications, 2021
Initiation of Mariana-type oceanic subduction zones requires rheologically strong oceanic lithosphere, which developed through secular cooling of Earth’s mantle.
Jinlong Yao   +6 more
semanticscholar   +1 more source

Ancient cratonic nuclei in East Antarctica: Research status, problems and prospects

open access: yesDizhi lixue xuebao, 2021
The Archean cratonic nuclei in the East Antarctic Shield (Craton) occur mainly in the Napier Mountains, southern Prince Charles Mountains, Rauer Group and Vestfold Hills in the Indian Ocean sector, and are sporadically exposed in the Australian, African ...
LIU Xiaochun   +7 more
doaj   +1 more source

A new Late Triassic dipteridacean fern from the Paso Flores Formation, Neuquén Basin, Argentina [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Sterile and fertile fronds of dipteridacean ferns from the Paso Flores Formation (late Norian–Rhaetian) at Cañadón de Pancho area, south of the Neuquén Province, Patagonia (Neuquén Basin), Argentina, are described.
SILVIA CRISTINA GNAEDINGER   +1 more
doaj   +1 more source

First record of a Late Jurassic rhamphorhynchine pterosaur from Gondwana [PDF]

open access: yesActa Palaeontologica Polonica, 2021
We describe partial remains of a non-pterodactyloid pterosaur from Upper Jurassic levels of the Atacama Desert in northern Chile. The material includes a left humerus, a possible dorsal vertebra, and the shaft of a wing phalanx, all preserved in three ...
Jhonatan Alarcón-Muñoz   +5 more
doaj   +1 more source

South Tarim tied to north India on the periphery of Rodinia and Gondwana and implications for the evolution of two supercontinents

open access: yesGeology, 2021
Constraining the positions of, and interrelationships between, Earth’s major continental blocks has played a major role in validating the concept of the supercontinent cycle.
Peng Wang   +7 more
semanticscholar   +1 more source

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