Buscar
Mostrando ítems 51-60 de 1050
Late Quaternary vegetation history based on phytolith records in the eastern Chaco (Argentina)
(Pergamon-Elsevier Science Ltd, 2019-02)
The Chaco plain is a sedimentary basin filled by alluvial fans repeatedly generated by large rivers during the late Quaternary under diverse climatic conditions. The Eastern Chaco is characterized by semi-deciduous forests ...
The Quaternary vertebrate fauna of the limestone cave Gruta do Ioio, northeastern Brazil
(Elsevier B.V., 2014-11-26)
The present study reports the Quaternary vertebrate fauna of Gruta do Ioio, a partially submerged limestone cave located in central Bahia, northeastern Brazil. A semi-arid weather prevails nowadays in the area, which is ...
Quaternary deformation around the Palo Negro area, Pampa Norte, Argentina
(Pergamon-Elsevier Science Ltd, 2010-04)
The Pampa Norte region is a great plain characterized by low slopes and accumulation of hundreds of meters of thick loose sediments. A high morphostructure denominated San Guillermo block stands out in the central plain, ...
Quaternary evolution of the Cordillera Frontal piedmont between c. 338 and 348S Mendoza, Argentina
(Geological Society of London, 2014-05)
The piedmont of Cordillera Frontal between c. 33° and 34°S (Mendoza, Argentina) is a highly populated area deeply modified by human activities, known as Valle de Uco. It is situated within the borderland region of the ...
K-Ar age determinations of the late Tertiary and Quaternary Andean volcanic rocks, southern Peru
(The Geochemical Society of JapanJP, 1984)
K-Ar ages were determined on 30 Andean volcanic rocks from southern Peru, most of which were considered to belong to the Barroso Group of Quaternary in age. The results have revealed, however, that their ages range from ...
Analysis of the Quaternary climatic and tectonic forcing along some different tectonic settings of South America
(Pergamon-Elsevier Science Ltd, 2017-05)
This special issue includes some of the contributions presented at Workshops of the INQUA SAm-GeoQuat International Focus Group (IFG): "South American Project towards an integration and improvement of Quaternary geological ...
Late quaternary glaciation history of Isla de los Estados, southeasternmost South America
(Univ Washington, 2010-05)
Isla de los Estados is a mountainous island southeast of Tierra del Fuego, in southernmost South America. Its central and eastern parts have an alpine topography, transected by U-shaped valleys, small, partly over-deepened ...
Quaternary paleoenvironments and relative sea-level changes in Marajo Island (Northern Brazil): Facies, delta(13)C, delta(15)N and C/N
(ELSEVIER SCIENCE BV, 2009)
The reconstruction of physical environments of Amazonian areas is of great interest to determine the dynamic evolution of the Amazon drainage basin. However. few studies have emphasized the Quaternary deposits in this ...