https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:47316 Tue 30 Apr 2024 09:51:07 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37522 230Th content. This poses problems in establishing reliable trends and periodicities for droughts and pluvial episodes in a region vulnerable to climate change. Here we constrain the chronology of a Cook Islands stalagmite using synchrotron µXRF two-dimensional mapping of Sr concentrations coupled with growth laminae optical imaging constrained by in situ monitoring. Unidimensional LA-ICP-MS-generated Mg, Sr, Ba and Na variability series were anchored to the 2D Sr and optical maps. The annual hydrological significance of Mg, Sr, Ba and Na was tested by principal component analysis, which revealed that Mg and Na are related to dry-season, wind-transported marine aerosols, similar to the host-rock derived Sr and Ba signatures. Trace element annual banding was then used to generate a calendar-year master chronology with a dating uncertainty maximum of ± 15 years over 336 years. Our approach demonstrates that accurate chronologies and coupled hydroclimate proxies can be obtained from speleothems formed in tropical settings where low seasonality and problematic U–Th dating would discourage the use of high-resolution climate proxies datasets.]]> Tue 15 Nov 2022 14:35:44 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:54914 Thu 21 Mar 2024 12:03:59 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43337 Thu 15 Sep 2022 15:04:28 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:50776 Mon 22 Apr 2024 11:47:11 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:49771 Fri 02 Jun 2023 17:37:40 AEST ]]>