Variable preservation of the 1991 Hudson tephra in small lakes and on land DOI Creative Commons
Richard Streeter, Nick A. Cutler, Ian T. Lawson

et al.

Frontiers in Earth Science, Journal Year: 2024, Volume and Issue: 12

Published: Oct. 3, 2024

Volcanic ash (tephra) preserved in terrestrial environments and lake sediments contains information about volcanic processes can be used to infer eruptive parameters frequency of past eruptions, contributing the understanding hazards. However, tephra deposits undergo transformation from their initial fallout sedimentation being as a layer sedimentary record. The process is likely different lakes (soil) sequences. Here we compare thickness, mass loading grain size layers 1991 eruption Cerro Hudson, Chile, small adjacent settings measurements made shortly after eruption. We analysed samples 35 cores total six (<0.25 km 2 ), located 76 109 volcano two contrasting climatic areas (cool humid northern site, warm dry southern site), 73 thickness 11 areas. major element geochemistry our confirmed they were Hudson found that some measured characteristics comparable those recorded deposition, but there was considerable variability within between locations. This not predictable did preserve notably more accurate record than sites. aggregate similar at time suggesting that, for palaeotephra research, sampling strategy involving wide range robust one relies on single or type environment.

Language: Английский

The Upper Paleolithic paleolandscapes: A record in the paleosol-sedimentary sequence of the archaeological site Kostenki 17 (Voronezh region, Russia) DOI
Fatima Kurbanova, Е. А. Константинов, М. П. Лебедева

et al.

CATENA, Journal Year: 2025, Volume and Issue: 255, P. 109011 - 109011

Published: April 17, 2025

Language: Английский

Citations

0

Advancing chronologies for Last Interglacial sequences DOI Creative Commons
Amy M. McGuire, Irene Waajen, Natasha Barlow

et al.

Journal of Quaternary Science, Journal Year: 2024, Volume and Issue: 39(7), P. 987 - 1010

Published: July 31, 2024

ABSTRACT Studies of the Last Interglacial (ca. 129 to 116 ka BP) provide an opportunity study impact high‐latitude warm temperatures on Earth system. To build accurate spatio‐temporal picture climate and environmental variability during Interglacial, building robust chronologies, through which patchwork terrestrial, marine, ice core archives can be correlated, is paramount. In this review, we briefly evaluate most common approaches used date from as well chronostratigraphic tools available for direct correlation between sequences, with a focus terrestrial archives. We then present case use pollen biostratigraphy correlating sequences in NW Europe, highlighting its strength local tool, challenges approach presents comparing global records change. A move towards consistently dated will improve our understanding responses across different elements system rates at respond changes temperatures.

Language: Английский

Citations

1

Variable preservation of the 1991 Hudson tephra in small lakes and on land DOI Creative Commons
Richard Streeter, Nick A. Cutler, Ian T. Lawson

et al.

Frontiers in Earth Science, Journal Year: 2024, Volume and Issue: 12

Published: Oct. 3, 2024

Volcanic ash (tephra) preserved in terrestrial environments and lake sediments contains information about volcanic processes can be used to infer eruptive parameters frequency of past eruptions, contributing the understanding hazards. However, tephra deposits undergo transformation from their initial fallout sedimentation being as a layer sedimentary record. The process is likely different lakes (soil) sequences. Here we compare thickness, mass loading grain size layers 1991 eruption Cerro Hudson, Chile, small adjacent settings measurements made shortly after eruption. We analysed samples 35 cores total six (<0.25 km 2 ), located 76 109 volcano two contrasting climatic areas (cool humid northern site, warm dry southern site), 73 thickness 11 areas. major element geochemistry our confirmed they were Hudson found that some measured characteristics comparable those recorded deposition, but there was considerable variability within between locations. This not predictable did preserve notably more accurate record than sites. aggregate similar at time suggesting that, for palaeotephra research, sampling strategy involving wide range robust one relies on single or type environment.

Language: Английский

Citations

0