Show simple item record Roberts, Nicholas J. Barendregt, René W. Clague, John J. 2021-11-09T23:58:00Z 2021-11-09T23:58:00Z 2018
dc.identifier.citation Roberts, N. J., Barendregt, R. W., & Clague, J. J. (2018). Lithostratigraphic and magnetostratigraphic data from late Cenozoic glacial and proglacial sequences underlying the Altiplano at La Paz, Bolivia. Data in Brief, 19, 965-987. en_US
dc.description Open access article. Creative Commons Attribution 4.0 International License (CC BY 4.0) applies. en_US
dc.description.abstract We provide lithostratigraphic and magnetostratigraphic data derived from a Plio-Pleistocene continental sediment sequence underlying the Altiplano plateau at La Paz, Bolivia. The record comprises six sections along the upper Río La Paz valley, totaling over one kilometre of exposure and forming a ~20-km transect oblique to the adjacent Cordillera Real. Lithostratigraphic characterization includes lithologic and stratigraphic descriptions of units and their contacts. We targeted gravel and diamicton units for paleomagnetic sampling to address gaps in the only previous magnetostratigraphic study from this area. Paleomagnetic data – magnetic susceptibility and primary remanent magnetization revealed by progressive alternating field demagnetization – are derived from 808 individually oriented samples of flat-lying, fine-grained sediments. The datasets enable characterization of paleo-surfaces within the sequence, correlation between stratigraphic sections, and differentiation of asynchronous, but lithologically similar units. Correlation of the composite polarity sequence to the geomagnetic polarity time scale supports a range of late Cenozoic paleoenvironmental topics of regional to global importance: the number and ages of early glaciations in the tropical Andes; interhemispheric comparison of paleoclimate during the Plio-Pleistocene climatic transition; timing of and controls on inter-American faunal exchange; and the variability of Earth's paleomagnetic field. en_US
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Plio-Pleistocene transition en_US
dc.subject Mid-Piacenzian warm period en_US
dc.subject Glacial stratigraphy en_US
dc.subject Central Andes en_US
dc.subject Magnetostratigraphy en_US
dc.subject Detrital remanent magnetization en_US
dc.subject.lcsh South America
dc.subject.lcsh Andes
dc.subject.lcsh Altiplano
dc.subject.lcsh Paleomagnetism
dc.subject.lcsh Magnetic susceptibility
dc.subject.lcsh La Paz (Bolivia)
dc.title Lithostratigraphic and magnetostratigraphic data from late Cenozoic glacial and proglacial sequences underlying the Altiplano at La Paz, Bolivia en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Geography and Environment en_US
dc.description.peer-review Yes en_US
dc.publisher.institution Simon Fraser University en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.url en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record