Two sediment cores up to 42 m in length were raised from the wide, deep, section of the lower Tapajos River, Amazonia, referred to as Lago Tapajos. These cores reveal a history of subtle environmental change that began with the formation of Lago Tapajos as sea level rose about 11,000 years ago. The sediments of the lake were deposited fairly quickly-at a rate of ca. 4 m per millennium and are uniformly fine grained, with low organic content. The fossil pollen record derived from these sediments reveals that forest surrounded this site throughout the Holocene. The largest change in the core took place between ca. 5500 and 4200 cal. years BP and reflects a transition from coarser to finer sediments. Coincident with the change in sediment is a...
International audienceTo better understand the impact of channel migration processes and climate cha...
International audienceTwo sediment cores were studied from Comprido Lake, a black water floodplain l...
International audiencePaleoenvironmental changes for the last 35,000 years were reconstructed from p...
Two sediment cores up to 42 m in length were raised from the wide, deep, section of the lower Tapajo...
Two sediment cores up to 42 m in length were raised from the wide, deep, section of the lower Tapajó...
Holocene environments have been reconstructed by sedimentological, mineralogical geochemical and hig...
A sedimentary record from the Peruvian Amazon provided evidence of climate and vegetation change for...
Down-core changes in sedimentary facies, elemental geochemistry, pollen, spore, δ13C, δ15N and radio...
Holocene environments have been reconstructed by sedimentological, mineralogical and organic geochem...
International audienceTo better understand the impact of channel migration processes and climate cha...
International audienceTwo sediment cores were studied from Comprido Lake, a black water floodplain l...
International audiencePaleoenvironmental changes for the last 35,000 years were reconstructed from p...
Two sediment cores up to 42 m in length were raised from the wide, deep, section of the lower Tapajo...
Two sediment cores up to 42 m in length were raised from the wide, deep, section of the lower Tapajó...
Holocene environments have been reconstructed by sedimentological, mineralogical geochemical and hig...
A sedimentary record from the Peruvian Amazon provided evidence of climate and vegetation change for...
Down-core changes in sedimentary facies, elemental geochemistry, pollen, spore, δ13C, δ15N and radio...
Holocene environments have been reconstructed by sedimentological, mineralogical and organic geochem...
International audienceTo better understand the impact of channel migration processes and climate cha...
International audienceTwo sediment cores were studied from Comprido Lake, a black water floodplain l...
International audiencePaleoenvironmental changes for the last 35,000 years were reconstructed from p...