South Pacific and Australian Hydroclimatic History Recorded by Stalagmite Calcite Fabrics

High-resolution reconstruction of infiltration in the Southern Cook Islands based on trace elements in speleothems

M Faraji, A Borsato, S Frisia, A Hartland, JC Hellstrom, A Greig

2024-03-02

This study utilizes speleothem trace elements as climate proxies to reconstruct hydroclimate variability over approximately 350 ye..

Crystallization pathways, fabrics and the capture of climate proxies in speleothems: Examples from the tropics

S Frisia, A Borsato, A Hartland, M Faraji, A Demeny, RN Drysdale, CE Marjo

2022-12-01

The quality of climate proxy data from speleothem archives depends to varying degrees on crystallization processes, which result i..

Controls on rainfall variability in the tropical South Pacific for the last 350 years reconstructed from oxygen isotopes in stalagmites from the Cook Islands

M Faraji, A Borsato, S Frisia, DP Mattey, RN Drysdale, DC Verdon-Kidd, R Malcolm, A Marca

2022-08-01

The hydroclimate of the South Pacific is highly variable on a range of timescales, however, the brevity of instrumental data in th..

Accurate dating of stalagmites from low seasonal contrast tropical Pacific climate using Sr 2D maps, fabrics and annual hydrological cycles

M Faraji, A Borsato, S Frisia, JC Hellstrom, A Lorrey, A Hartland, A Greig, DP Mattey

2021-12-01

Tropical Pacific stalagmites are commonly affected by dating uncertainties because of their low U concentration and/or elevated in..

A guide to synchrotron hard X-ray fluorescence mapping of annually laminated stalagmites: Sample preparation, analysis and evaluation

A Borsato, S Frisia, D Howard, A Greig

2021-11-01

Annually laminated stalagmites are an exceptional archive of high-resolution past hydroclimate changes and provide robust annually..

Evidence of thermophilisation and elevation-dependent warming during the Last Interglacial in the Italian Alps

VE Johnston, A Borsato, S Frisia, C Spötl, Y Dublyansky, P Töchterle, JC Hellstrom, P Bajo, RL Edwards, H Cheng

2018-12-01

Thermophilisation is the response of plants communities in mountainous areas to increasing temperatures, causing an upward migrati..

High spatial resolution investigation of nucleation, growth and early diagenesis in speleothems as exemplar for sedimentary carbonates

S Frisia, A Borsato, J Hellstrom

2018-03-01

Investigation by high resolution Transmission Electron Microscopy (HR-TEM) and Synchrotron-Radiation based micro X-ray fluorescenc..

Stalagmite carbon isotopes and dead carbon proportion (DCP) in a near-closed-system situation: An interplay between sulphuric and carbonic acid dissolution

Petra Bajo, Andrea Borsato, Russell Drysdale, Quan Hua, Silvia Frisia, Giovanni Zanchetta, John Hellstrom, Jon Woodhead

2017-08-01

In this study, the ‘dead carbon proportion’ (DCP) calculated from combined U-Th and radiocarbon analyses was used to explore the c..

The influence of Antarctic subglacial volcanism on the global iron cycle during the Last Glacial Maximum

Silvia Frisia, Laura S Weyrich, John Hellstrom, Andrea Borsato, Nicholas R Golledge, Alexandre M Anesio, Petra Bajo, Russell N Drysdale, Paul C Augustinus, Camille Rivard, Alan Cooper

2017-06-09

Marine sediment records suggest that episodes of major atmospheric CO2 drawdown during the last glacial period were linked to iron..