Results 31 to 40 of about 1,669,619 (276)

Paleomagnetism of Late Triassic Volcanic Rocks From the South Qiangtang Block, Tibet: Constraints on Longmuco‐Shuanghu Ocean Closure in the Paleo‐Tethys Realm

open access: yesGeophysical Research Letters, 2023
The South Qiangtang block of the Qinghai‐Tibet Plateau represents an area critical to understanding the late Paleozoic and early Mesozoic history of the Tethyan realm, but its drift history remains poorly constrained.
Bitian Wei   +11 more
doaj   +1 more source

Mesozoic Coleopteran Faunas from Argentina: Geological Context, Diversity, Taphonomic Observations, and Comparison with Other Fossil Insect Records

open access: yesPsyche: A Journal of Entomology, 2012
The order Coleoptera is the most diversified group of the Class Insecta and is the largest group of the Animal Kingdom. This contribution reviews the Mesozoic insects and especially the coleopteran records from Argentina, based on bibliographical and ...
María Belén Lara   +2 more
doaj   +1 more source

Morphological and biomechanical disparity of crocodile-line archosaurs following the end-Triassic extinction [PDF]

open access: yes, 2013
Mesozoic crurotarsans exhibited diverse morphologies and feeding modes, representing considerable ecological diversity, yet macroevolutionary patterns remain unexplored.
Anderson, Philip S. L.   +7 more
core   +1 more source

The Triassic climate and its evolutionary characteristics in Jiyuan area in south of North China Plate: Evidence from paleosol geochemistry

open access: yes河南理工大学学报. 自然科学版
ObjectivesThe Triassic period was a period of rapid fluctuation of greenhouse climate, and the paleosol recorded abundant paleoclimate information. To study the climate change process from extreme to medium greenhouse,Methodsthe Triassic paleosoils in ...
YANG Wentao   +3 more
doaj   +1 more source

Provenance history of a Late Triassic-Jurassic Gondwana margin forearc basin, Murihiku Terrane, North Island, New Zealand: petrographic and geochemical constraints [PDF]

open access: yes, 2004
The Murihiku Terrane in the North Island was a forearc basin adjacent to a volcanic arc along the eastern margin of Gondwana during the Mesozoic. The rocks that infill the basin are mainly volcaniclastic sandstones and mudstones, often turbiditic, with ...
Roger M. Briggs   +5 more
core   +1 more source

Revision of the thylacocephalan biota from the Upper Triassic Polzberg Konservat-Lagerstätte, Austria [PDF]

open access: yesActa Palaeontologica Polonica
Known for over 140 years, the Upper Triassic Polzberg Konservat-Lagerstätte is an exceptional early Carnian marine assemblage discovered in the Northern Calcareous Alps of Lower Austria. The Polzberg biota is composed of a diverse marine fauna, including
Thomas Laville   +2 more
doaj   +1 more source

Evidence for Late Triassic crustal suturing of the Central and Southern Pamir

open access: yesJournal of Asian Earth Sciences: X, 2020
The timing of closure of the Paleotethys and Rushan ocean basins and suturing of Gondwanan crustal fragments in the Pamir is not well resolved. Whereas the Central Pamir terrane is generally interpreted to have collided with the Northern Pamir terrane at
Dustin P. Villarreal   +7 more
doaj   +1 more source

New insights on the early Mesozoic evolution of multiple tectonic regimes in the northeastern North China Craton from the detrital zircon provenance of sedimentary strata [PDF]

open access: yesSolid Earth, 2018
To investigate the timing of deposition and provenance of early Mesozoic strata in the northeastern North China Craton (NCC) and to understand the early Mesozoic paleotectonic evolution of the region, we combine stratigraphy, U–Pb zircon geochronology,
Y. N. Wang   +4 more
doaj   +1 more source

Chirotherium barthii Kaup 1835 from the Triassic of the Isle of Arran, Scotland [PDF]

open access: yes, 2002
The mould of a track from SE Arran, and several in situ trackways and individual tracks, as well as a partial trackway on a loose block of Triassic sandstone, from western Arran, represent the first verifiable fossil tracks of Chirotherium from the ...
Aspen, P., Corrance, H., Clark, N.D.L.
core   +1 more source

Understanding the provenance and depositional conditions of Triassic sedimentary rocks from the Spiti region, Tethys Himalaya, India

open access: yesJournal of Asian Earth Sciences: X, 2023
The Spiti region, renowned as the Museum of Indian Geology, is a world-famous sedimentary succession containing well-exposed sequences from Neoproterozoic to Cretaceous age. In this study, Triassic siliciclastic sedimentary rocks of the Lilang Supergroup
Javid A. Ganai   +5 more
doaj   +1 more source

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