Results 41 to 50 of about 1,840 (219)

Brazil: Modernity and Mobility [PDF]

, 2015
This essay examines the field of Brazilian mobility studies, concentrating mainly on recent (2010-2013) scholarship by Portuguese-speaking Brazilian academics published in English-language journals. The mass demonstrations and violent protests that have
Cooper, Martin
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Discovery of trimerellide brachiopod Gasconsia from the Ordovician of Estonia [PDF]

Estonian Journal of Earth Sciences
In this study, the first trimerellide brachiopods from Estonia are described. They occur in the uppermost Katian (Upper Ordovician) shallow shelf environments and represent some of the largest Ordovician brachiopods.
Linda Hints, Jiayu Rong
doaj   +1 more source

Allogenic succession in Late Ordovician reefs from southeast China: a response to the Cathaysian orogeny [PDF]

Estonian Journal of Earth Sciences, 2015
Several Late Ordovician (late Katian) reef complexes are known from the border area of Jiangxi and Zhejiang provinces in southeast China. We studied two coral–stromatoporoid reefs exposed in the Xiazhen Formation at Zhuzhai (Yushan, Jiangxi).
Qijian Li, Yue Li, Wolfgang Kiessling
doaj   +1 more source

The climatic significance of Late Ordovician-early Silurian black [PDF]

, 2017
The Ordovician-Silurian transition (455-430 Ma) is characterized by repeated climatic perturbations, concomitant with major changes in the global oceanic redox state best exemplified by the periodic deposition of black shales.
A. Pohl, Adcroft, Adcroft, Algeo, Algeo, Anderson, Armstrong, Armstrong, Armstrong, Arthur, Aumont, Barton, Beaulieu, Bergman, Berner, Berner, Berry, Bickert, Brenchley, Brenchley, Brenchley, Brunetti, Bryant, Came, Chaloner, Cocks, Cocks, Cocks, Cocks, Cramer, Cramer, Cramer, D. Ferreira, Denis, Donnadieu, Dutkiewicz, Edwards, Ekman, Enderton, Falkowski, Ferreira, Ferreira, Finlay, Finnegan, Finney, Follows, Friis, Friis, G. Le Hir, Ganopolski, Garcia, Gent, Ghienne, Gille, Girard, Hammarlund, Haq, Harper, Harper, Heckman, Herrmann, Herrmann, Hoffman, Jenkyns, Jeppsson, Johnson, Jones, Kageyama, Kaljo, Kemp, Kemp, Kump, LaPorte, Large, Laskar, Le Heron, Le Heron, Le Heron, Le Heron, Le Hir, Lenton, Lenton, Litchman, Loi, Long, Loydell, Loydell, Lunt, Luo, Marshall, Marshall, Marshall, Marshall, Marshall, Martin, McKinley, Meinhold, Melchin, Molteni, Monteiro, Montenegro, Moreau, Munnecke, Myhre, Nardin, Och, Osen, Owens, Page, Palastanga, Pohl, Pohl, Pohl, Porada, Poulsen, Poussart, Prange, R Core Team, Rahmstorf, Rasmussen, Redi, Roche, Roche, Rose, Rubinstein, Ruttenberg, Sageman, Schlanger, Schmidt, Servais, Servais, Sheehan, Steemans, Stommel, Stouffer, Sutcliffe, Torsvik, Trabucho-Alexandre, Trotter, Trotter, Tukey, Van Cappellen, Vandenbroucke, Vecoli, Walker, Wallmann, Webby, Winton, Y. Donnadieu, Yamanaka, Yan, Young, Zhang, Zhou, Zhuravlev   +154 more
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Late Ordovician (post–Sardic) rifting branches in the North Gondwanan Montagne Noire and Mouthoumet massifs of southern France [PDF]

, 2015
Upper Ordovician–Lower Devonian rocks of the Cabrières klippes (southern Montagne Noire) and the Mouthoumet massif in southern France rest paraconformably or with angular discordance on Cambrian–Lower Ordovician strata.
Colmenar, Jorge, Monceret, Eric, Pouclet, André, Vizcaïno, Daniel, Álvaro-Blasco, José Javier   +4 more
core   +1 more source

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L, FUNEDDA A., GAGGERO L, OGGIANO G   +3 more
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Conodonts in Ordovician biostratigraphy [PDF]

, 2017
The long time interval after Pander's (1856) original conodont study can in terms of Ordovician conodont biostratigraphical research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971) and the Modern
Abaimova, Agematsu, Agematsu, Albanesi, Amsden, An, An, An, An, Armstrong, Armstrong, Bagnoli, Balini, Bauer, Bauer, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Branson, Branson, Burrett, Cooper, Cullison, Del Moral, Druce, Druce, Dumoulin, Dzik, Dzik, Dzik, Ethington, Ethington, Feltes, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Furnish, Graves, Harris, Hinde, Holm, Ji, Johnston, Knüpfer, Lapworth, Lehnert, Lehnert, Lindström, Lindström, Lindström, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, McCracken, McTavish, Miller, Miller, Miller, Moskalenko, Moskalenko, Männik, Ni, Nowlan, Orchard, Pander, Paris, Pohler, Pohler, Pyle, Pyle, Rasmussen, Rhodes, Rhodes, Sarmiento, Savage, Sennikov, Sergeeva, Serpagli, Serpagli, Serpagli, Serpagli, Serra, Smith, Smith, Smith, Stauffer, Stauffer, Stouge, Stouge, Stouge, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Tjernvik, Tjernvik, Tolmacheva, Tolmacheva, Tolmacheva, Viira, Viira, Viira, Voldman, Wang, Wang, Wang, Wang, Watson, Weyant, Wiman, Wiman, Young, Zhan, Zhang, Zhang, Zhang, Zhang, Zhao, Zhen, Zhen, Zhen, Zhen, Zhen, Álvaro   +148 more
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Diverse endobiotic symbiont fauna from the late Katian (Late Ordovician) of Estonia

Palaeontologia Electronica, 2022
Vinn, Olev, Wilson, Mark A., Holmer, Lars E., Ernst, Andrej, Tinn, Oive, Toom, Ursula (2022): Diverse endobiotic symbiont fauna from the late Katian (Late Ordovician) of Estonia.
Vinn, Olev, Wilson, Mark A., Holmer, Lars E., Ernst, Andrej, Tinn, Oive, Toom, Ursula   +5 more
openaire   +2 more sources

Ordovician climate changes in the northern subtropics: The δ18O record from the Tunguska Basin, Siberia [PDF]

Estonian Journal of Earth Sciences, 2023
Oxygen isotopes from bioapatite (conodonts) have been used for several decades to reconstruct the Palaeozoic climate history. During the Ordovician, conodont-based δ18Ophos studies have revealed a general cooling trend throughout the system.
Peep Männik, Oliver Lehnert, Michael M. Joachimski   +2 more
doaj   +1 more source

Calibrating Water Depths of Ordovician Communities: Lithological and Ecological Controls on Depositional Gradients in Upper Ordovician Strata of Southern Ohio and North-Central Kentucky, USA [PDF]

, 2015
Limestone and shale facies of the Upper Ordovician Grant Lake Formation (Katian: Cincinnatian, Maysvillian) are well exposed in the Cincinnati Arch region of southern Ohio and north-central Kentucky, USA.
Aucoin, Christopher D., Brett, Carlton, Dattilo, Benjamin F., Malgieri, Thomas J., Schwalback, Cameron A., Thomka, James R.   +5 more
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