Buscar
Mostrando ítems 31-40 de 56
An in situ shelly fauna from the lower Paleozoic Zapla diamictite of northwestern Argentina: implications for the age of glacial events across Gondwana
(Pergamon-Elsevier Science Ltd, 2015-06)
A shelly fauna from the upper part of the Zapla glacial diamictite includes thelingulate brachiopod Orbiculoidea radiata Troedsson, the rhynchonelliforms Dalmanella cf. testudinaria (Dalman) and Paromalomena sp., the bivalve ...
Ubinas: the evolution of the historically most active volcano in southern Peru
(Springer, 2005)
Ubinas volcano has had 23 degassing and ashfall episodes since A.D. 1550, making it the historically most active volcano in southern Peru. Based on fieldwork, on interpretation of aerial photographs and satellite images, ...
Teleconnections between boreal cooling and tropical glaciers in the Cordillera Blanca (Peru)
(International Permafrost AssociationPE, 2019)
30 samples have been collected for the cosmogenic dating of expanding and shrinking glacial phases southwesternward of Nevado Hualcán (9º, 12'S; 77º, 31'W, 6122 m), in the Cordillera Blanca (Peru).The set includes 28 moraine ...
Triassic-Jurassic thermal evolution and exhumation of the western Gondwana foreland: Thermochronology and basalt thermobarometry from the Argentine Sierras Pampeanas
(Pergamon-Elsevier Science Ltd, 2020-10)
The geological record of the eastern Sierras Pampeanas province, in the modern Andean broken foreland of Argentina can be divided into four main events: (1) Proterozoic to early Paleozoic collisional tectonics, (2) middle-late ...
Timing of the Late Palaeozoic glaciation in western Gondwana: New ages and correlations from Paganzo and Paraná basins
(Elsevier Science, 2020-04)
During the Late Palaeozoic, the Gondwana supercontinent formed an extensive Southern Hemisphere landmass that was affected by multiple glacial episodes, known collectively as the Late Palaeozoic Ice Age (LPIA). This resulted ...
Preenchimento de vales incisos por associações de fácies estuarinas, formação Rio Bonito, nordeste do Paraná
(Universidade Estadual Paulista (Unesp), 2004-07-19)
A Formação Rio Bonito é a unidade inferior do Grupo Guatá, Eopermiana da Bacia do Paraná. Compreende, da base para o topo, os membros Triunfo, Paraguaçu e Siderópolis. No Estado do Paraná, a espessura da Formação Rio Bonito ...
Aquisição, processamento e análise de dados de sísmica de alta resolução na plataforma continental norte do Rio Grande do Norte: Vale inciso do Rio Açu
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Geodinâmica e GeofísicaGeodinâmica; Geofísica, 2008-08-26)
On the modern Continental Shelf to the north of Rio Grande do Norte state (NE Brazil) is located a paleo-valley, submerged during the last glacial sea-level lowstand, that marks continuation of the most important river of ...
Registros holocênicos de sedimentação mista carbonática-siliciclástica na plataforma continental externa do Rio Grande do Norte
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM GEODINÂMICA E GEOFÍSICA, 2021-05-07)
The continental shelf of northeastern Brazil is characterized by a semiarid climate, warm
temperatures, clear water, low sediment input, and mixed, carbonate-siliciclastic
sedimentation. In this study, statistical analysis, ...
Preenchimento de vales incisos por associações de fácies estuarinas, formação Rio Bonito, nordeste do Paraná
(Universidade Estadual Paulista (Unesp), 2004-07-19)
A Formação Rio Bonito é a unidade inferior do Grupo Guatá, Eopermiana da Bacia do Paraná. Compreende, da base para o topo, os membros Triunfo, Paraguaçu e Siderópolis. No Estado do Paraná, a espessura da Formação Rio Bonito ...
Ubinas: the evolution of the historically most active volcano in southern Peru
(Springer-VerlagDE, 2005-07)
Ubinas volcano has had 23 degassing and ashfall episodes since A.D. 1550, making it the historically most active volcano in southern Peru. Based on fieldwork, on interpretation of aerial photographs and satellite images, ...