Mostrando 10 resultados de: 30
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scopus(30)
A 1.8 million year history of Amazon vegetation
ArticleAbstract: During the Pleistocene, long-term trends in global climate were controlled by orbital cycles leadingPalabras claves:Biodiversity, Glacial-interglacial cycles, Mid-pleistocene transition, palynology, SOUTH AMERICA, vegetationAutores:Akabane T.K., Baker P.A., Catherine A. Rigsby, Chiessi C.M., Cruz F.W., Dwyer G.S., Ferreira F., Ferreira J.Q., Fritz S.C., Kern A.K., Sanders A.O., Silva C.G., Willard D.A.Fuentes:scopusClimate and lake-level history of the northern Altiplano, Bolivia, as recorded in Holocene sediments of the Rio Desaguadero
ArticleAbstract: Strata exposed in terraces and modern cutbanks along the Rio Desaguadero contain a variety of lithofPalabras claves:Autores:Baucom P., Catherine A. RigsbyFuentes:scopusClimatic influence on sedimentology and geomorphology of the Rio Ramis valley, Peru
ArticleAbstract: Fluctuations in regional precipitation and in base-level (the level of Lake Titicaca) trigger changePalabras claves:Autores:Catherine A. Rigsby, Farabaugh R.L.Fuentes:scopusBiochronostratigraphy of the western equatorial Atlantic for the last 1.93 Ma
ArticleAbstract: Planktonic foraminifera are an important biochronostratigraphic tool and one of the main proxies usePalabras claves:biostratigraphy, Brazilian equatorial margin, Equatorial western Atlantic, Pará-Maranhão Basin, Planktonic foraminiferaAutores:Catherine A. Rigsby, Chiessi C.M., Dwyer G.S., Ferreira F., Huang E., Kern A.K., Oliveira A.S., Paul A. Baker, Silva C.G., Tian J.Fuentes:scopusCaribbean hydrological variability during the Holocene as reconstructed from crater lakes on the island of Grenada
ArticleAbstract: Contemporary precipitation patterns in the Caribbean region are spatially variable, and the small nuPalabras claves:Caribbean, Diatoms, Lake level, paleoclimate, TephraAutores:Björck S., Calder-Church A., Catherine A. Rigsby, Conley D.J., Fritz S.C., Paul A. BakerFuentes:scopusApplication of strontium isotopes to understanding the hydrology and paleohydrology of the Altiplano, Bolivia-Peru
Conference ObjectAbstract: Strontium concentrations and strontium isotopic ratios were measured in natural waters and carbonatePalabras claves:Altiplano, hydrology, Isotopes, paleoclimate, Paleohydrology, StrontiumAutores:Catherine A. Rigsby, Cross S.L., Grove M.J., Paul A. Baker, Seltzer G.O.Fuentes:scopusDeepening-upward sequences in Oligocene and Lower Miocene fan-delta deposits, western Santa Ynez Mountains, California
ArticleAbstract: Coarse, matrix-supported conglomerates, an abundant invertebrate faunal assemblage, and large verticPalabras claves:Autores:Catherine A. RigsbyFuentes:scopusGeologic constraints on rain-fed Qocha reservoir agricultural infrastructure, northern Lake Titicaca Basin, Peru
ArticleAbstract: This paper reports new data on qocha ponds from the Rio Pucara-Azángaro interfluvial zone, northernPalabras claves:Agriculture, Andes, GIS, remote sensingAutores:Aldenderfer M., Blanco L., Catherine A. Rigsby, Craig N., Paul A. BakerFuentes:scopusHeavy metal concentrations in sediment deposits on the Tar River floodplain following Hurricane Floyd
ArticleAbstract: The relation between the magnitude of a flood event and the resulting environmental impacts remainsPalabras claves:flood, Floodplain, Heavy MetalsAutores:Catherine A. Rigsby, Gares P.A., Lecce S.A., Pease P.P.Fuentes:scopusHolocene multidecadal- to millennial-scale hydrologic variability on the South American Altiplano
ArticleAbstract: Precipitation on the South American Altiplano varies at a range of temporal scales. A long-term secuPalabras claves:Altiplano, Diatoms, Holocene, Hydrological variability, Lake Titicaca, Millennial scale, Perú, SOUTH AMERICA, Tropical palaeoclimateAutores:Catherine A. Rigsby, Coley K., Ekdahl E.J., Fritz S.C., Paul A. BakerFuentes:scopus