Timescales of Mineral Systems Group, EPS, Curtin University

Cryogenian Glacial Erosion and Tectonics as Agents of Crustal Recycling Zircon preserves evidence of recycling processes that link surface environments to the mantle. Combined δ18O-εHf in zircon fingerprints magmatic sources and tracks how crustal material is reworked ov....

#openaccess collaboration exploring global #Neoproterozoic records of #zircon O- and Hf-isotopes to study the complex interplay of tectonics, climate, and large igneous province processes in shaping Earth's crustal evolution.
doi.org/10.1111/ter....

#openaccess collaboration with the JdLC, GSWA & WA1 and Encounter Resources industry placing temporal constraints on the recently discovered Luni and Crean mineralized (Nb, #REE, P) #carbonatites in central Australia.
doi.org/10.1017/S001...
@geochronchris.bsky.social

Forging Earth’s Hotspots: Proterozoic melts that powered giant ore systems

Today, we’re stepping back 1.6 billion years into the heart of Proterozoic Australia — to uncover the fiery processes behind some of the world’s most famous ore systems.

www.cfigs.com.au/discovery

Grey Hill Zircon – A Natural High 176Yb/177Hf Zircon Reference Material for LA‐MC‐ICP‐MS Hf Isotope Measurement New natural high REE/Hf zircon reference material for in situ Hf isotopic measurement. Hf isotope ratio is independent of zircon textural domains. Stable Hf isotope ratio despite Pb and REE variabil.....

Nice work led by Piero and Hugo in Geostandards and Geoanalytical Research in collaboration with JdLC et al working up a new high #Yb ratio #zircon #referencematerial for #LAMCICPMS #Hf measurements. #EPS #CFIGS #EDRG #TMSG
#openaccess here - doi.org/10.1111/ggr....

#openaccess in #PhysicalReviewResearch led by
@geochronchris.bsky.social exploring links between terrestrial #zircon deep time O-isotope records and galactic processes suggesting potential influences on crustal evolution.
doi.org/10.1103/98c3...

Giant lithium-rich pegmatites in Archean cratons form by remelting refertilised roots of greenstone belts - Communications Earth & Environment Melting of sanukitoid-infused basement beneath greenstone roots produced lithium-rich granites and lithium-pegmatite in the Australian Archean Cratons, according to an analysis of geochemical and isot...

~80% of the world’s hard-rock #lithium comes from #Archean #pegmatite whose formation is not fully understood. Work by Smithies et al. shows the importance of crustal boundaries and hydrous mantle-derived magma from deep metasomatized lithospheric domains. #openaccess
doi.org/10.1038/s432...

Another paper #openaccess in the same issue of #EPSL led by @andizametzer.bsky.social looking at ways to mitigate bias in detrital mineral geochronology. How many grains do you need and how are they best selected?
doi.org/10.1016/j.ep...
@milobarham.bsky.social @geochronchris.bsky.social

Nice bit of work demonstrating the power of in situ Lu-Hf dating of garnet in a polymetamorphic terrane led by Jonas, w/ @earlyearthtim.bsky.social. The full P-T-t package. #Openaccess in #EPSL
doi.org/10.1016/j.ep...

Congrats to Jiankang on his 1st PhD paper. #Collaboration with JdLC, CSIRO, GA, and GSWA demonstrating accessory mineral dating in evaporites to better understand salt sequences and their growing relevance for H-storage. #openaccess in #EPSL
doi.org/10.1016/j.ep...

In case you missed it - #openaccess in Communications Earth & Environment @geochronchris.bsky.social et al. use ancient Jack Hills #zircon geochemistry to explore a switch from a thermal regime dominated by impacts to one dominated by heat loss from Earth’s interior.
doi.org/10.1038/s432...

#openaccess in @jsedimentology.bsky.social explore how heavy mineral analysis at the basin and continent scale informs on basement composition, weathering, erosion, sediment storage and reworking.
doi.org/10.1111/sed....
@milobarham.bsky.social @geochronchris.bsky.social @andizametzer.bsky.social

#openaccess in @natcomms.nature.com in collaboration with the #JDLC and #GSWA. Understanding ancient incipient crust formation through a melt-bearing amphibolite from the Sylvania Inlier of the Pilbara Craton, WA. doi.org/10.1038/s414...

Revised ~1 Ga age of Stac Fada impact site in Scotland from shocked zircon and links to the biosphere. Check out the global collaboration #openaccess in #Geology
@geochronchris.bsky.social, @earlyearthtim.bsky.social, @bribeiro.bsky.social, @rockhoundrich.bsky.social
doi.org/10.1130/G531...

Nice beaches, nice #zircon, nice data, nice interp, all in "A Day at the Beach: A Portrait of British Geology through Sand" in the JGSL @geolsoc.bsky.social by Dr Anthony Clarke
doi.org/10.1144/jgs2...
@geochronchris.bsky.social

Shoutout to Priyanjan Datta for the 1st paper of his #PhD in #Lithos linking granite Pb-isotope signatures to intracrustal fractionation, crustal thickness, and the evolution of the Delamerian & Lachlan Fold Belt.
With @geochronchris.bsky.social, JdLC, GA et al.
doi.org/10.1016/j.li...

PhD student Lucy Mathieson is at it again tracking fluid-rock interaction through interrogation of #discordant U-Pb #zircon analyses, with another catchy title to boot - "From Discordance to Discovery..." in the JGSL @geolsoc.bsky.social
doi.org/10.1144/jgs2...
@geochronchris.bsky.social

Hot off the press, published #openaccess in
@agu.org G3 and led by PhD student Lucy Mathieson, explore the potential treasure trove of #discordant data in U/Pb #zircon #geochronology.
doi.org/10.1029/2024...
@geochronchris.bsky.social

#Provenance researchers please join us in New Zealand 2026 for the IAS 22nd International Sedimentological Congress
confer.co.nz/isc2026/tect...
@sedimentology.bsky.social, @inespereira.bsky.social, @timescaleseps.bsky.social

#Collab with the Geological Survey of WA we have 2 fully funded #PhD positions available looking at the "Tectonic Evolution and Geochronology of the Yilgarn Craton" a world famous mineral endowed classic.
www.earthworks-jobs.com/geoscience/c...
@geochronchris.bsky.social @bribeiro.bsky.social

Giant glaciers pulverised Earth’s ancient rocks, setting the stage for complex life Hundreds of millions of years ago, rocks crushed under kilometres of ice injected vital nutrients into Earth’s oceans.

Rocks from 700 million years ago hold the clues. From glaciers bulldozing landscapes to meltwater rivers flushing chemical elements into the oceans = it’s a story of how land, sea, and sky are all geochemically connected. theconversation.com/giant-glacie...

Earth’s oldest impact crater was just found in Australia – exactly where geologists hoped it would be The crater dates back 3.5 billion years, making it the oldest known by more than a billion years.

Boom theconversation.com/earths-oldes...

This is figure 2, which shows field photographs of rocks on the flanks of the North Pole Dome.

Shatter cones in rocks in the Pilbara craton, in Western Australia, provide evidence for oldest known impact crater on Earth, which struck 3.5 billion years ago, according to a paper in Nature Communications. https://go.nature.com/3DrWafY ⚒️ 🧪