Results 61 to 70 of about 58,643 (272)

An updated correlation of the Silurian strata in Estonia [PDF]

Estonian Journal of Earth Sciences
The correlation of the Silurian succession of Estonia with the global standard has long been considered reliable. However, new information, particularly on the distribution of microfossils, has changed our understanding of the Silurian stratigraphy in ...
Peep Männik, Tõnu Meidla, Olle Hints
doaj   +1 more source

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert, Airaghi, Airaghi, Airaghi, Ansberque, Arne, Beyssac, Billerot, Burchfiel, C. J. Warren, Chen, Cook, D. Deldicque, Deng, Densmore, Deschamps, Dirks, Dubacq, Godard, Guo, Harrison, Harrowfield, Huang, Huang, Hubbard, Hubbard, J. de Sigoyer, Jia, Jiang, Kapp, Kapp, Kirby, L. Airaghi, Lanari, Lanari, Li, Li, Li, Li, Liao, Lichun, Liu, Massonne, Meng, Meng, Michele, Passchier, Robert, Robert, Robert, Roger, Roger, Roger, S. Guillot, SBGMR (Sichuan Bureau of Geology and Mineral Resources), Sigoyer, Sigoyer, Stipp, Tan, Tan, Tian, Vidal, Vidal, Wang, Wang, Wang, Weller, Whitney, Worley, Xu, Xu, Xue, Yan, Zhang, Zhang, Zhang, Zhang, Zheng, Zheng, Zhou, Zhou   +80 more
core   +3 more sources

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta, Neivaldo Araújo de Castro, Marcos Alberto Rodrigues Vasconcelos, Airton Natanael Coelho Dias, Ludovic Ferrière, Wolf Uwe Reimold, Ana Maria Góes, Jackson Alves Martins, Liliana Sayuri Osako, Raimundo Mariano Gomes Castelo Branco   +9 more
wiley   +1 more source

Bryozoan–cnidarian mutualism triggered a new strategy for greater resource exploitation as early as the Late Silurian

Scientific Reports, 2022
Bryozoans were common benthic invertebrates in the Silurian seas. The large biodiversity among Silurian benthic organisms prompted diversified interactions, and as a result bryozoans hosted many other organisms as symbionts.
Mikołaj K. Zapalski, Olev Vinn, Ursula Toom, Andrej Ernst, Mark A. Wilson   +4 more
doaj   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Geochemical features of the Lower Silurian strata in Xiushan, Chongqing: Implications for paleoclimate reconstruction

Journal of Asian Earth Sciences: X
The Silurian was featured by frequent climatic and environmental changes. Impoverished marine faunas slowly recovered from the end-Ordovician mass extinction.
La Zhang, Yang Chen, Jinhua Luan, Ruigang Zhang, Zhiwei Cui, Haitong Zhao, Qian Wang   +6 more
doaj   +1 more source

A Silurian ‘marrellomorph’ arthropod [PDF]

Proceedings of the Royal Society B: Biological Sciences, 2007
Xylokorys chledophilia, a new arthropod with three-dimensionally preserved soft tissues, is described from the Herefordshire (Silurian) Lagerstätte of England. The head and trunk are covered by a relatively featureless ovoid carapace, which comprises a domed central part and a flange-like border. The head bears five pairs of appendages.
Siveter, D, Fortey, R, Sutton, MD, Briggs, D, Siveter, D   +4 more
openaire   +3 more sources

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

Meteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes, Wolf U. Reimold, Roger L. Gibson, Julia B. Curto Ma, Adolfo B. Silva, Natalia Hauser   +5 more
wiley   +1 more source

Mercury spikes suggest volcanic driver of the Ordovician-Silurian mass extinction

Scientific Reports, 2017
The second largest Phanerozoic mass extinction occurred at the Ordovician-Silurian (O-S) boundary. However, unlike the other major mass extinction events, the driver for the O-S extinction remains uncertain.
Qing Gong, Xiangdong Wang, Laishi Zhao, S. Grasby, Zhong‐Qiang Chen, Lei Zhang, Yang Li, Linglong Cao, Zhihong Li   +8 more
semanticscholar   +1 more source

Age and orbital forcing in the upper Silurian Cellon section (Carnic Alps, Austria) uncovered using the WaverideR R package

Frontiers in Earth Science
The type-Silurian Cellon section in the Carnic Alps in Austria underpins much of the current Silurian conodont zonations, forming the basis for the Silurian timescale.
Michiel Arts, Carlo Corradini, Monica Pondrelli, Monica Pondrelli, Damien Pas, Anne-Christine Da Silva   +5 more
doaj   +1 more source