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Andreas Zametzer @andizametzer.bsky.social · 31/05/2026

An example of how to extract timing information from mafic volcanic rocks, with potential implications for hydrocarbon preservation in basins: doi.org/10.1144/jgs2...

doi.org

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Reposted by Andreas Zametzer

Timescales of Mineral Systems Group, EPS, Curtin University @timescaleseps.bsky.social · 19/01/2026

Open Access in #Geology led by @bribeiro.bsky.social "Microstructural and geochemical response of muscovite to impact metamorphism" from the 2.3 Ga Yarrabubba impact structure Check out the beautiful science and images - doi.org/10.1130/G538... @geochronchris.bsky.social @andizametzer.bsky.social

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Reposted by Andreas Zametzer

Curtin Frontier Institute for Geoscience Solutions @cfigs-geoscience.bsky.social · 07/10/2025

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

cfigs.com.au

Discovery |

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Reposted by Andreas Zametzer

Uni Göttingen @uni-goettingen.de · 18/09/2025

Ancient rocks reveal critical metal origin and continent-breaking forces Researchers found niobium-rich carbonatites were formed over 800 million years ago, rising from deep in the Earth via crust fractures: www.uni-goettingen.de/en/3240.html?id=7909 #GeologicalMagazine: doi.org/10.1017/S001...

This black and white image shows five images of crystals in grey/black on a black background. They have some triangular structures and some rectangular, with cracks and "blobs". They are some of the zircon minerals analysed in this study – their isotopic composition reveal the age of the carbonatites, and their cryptic internal structure attest to their complex geological history. Grain sizes range from 0.1 to 1 mm.

Photo: Dröllner M et al., Geological Magazine (2025). DOI: 10.1017/S0016756825100204

Photo shows researcher Dr Maximilian Dröllner in the field in the sunshine in a dry-looking, brown/orange surrounding landscape. His arm rests on another rare rock (known as orbicular granite) which is large and light grey with repeating but different roundish patterns in different shades of mostly darker gray.

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Andreas Zametzer @andizametzer.bsky.social · 13/09/2025

Ever wondered how many grains you need to analyse for a representative detrital mineral study? We're putting out some new suggestions and numbers whilst addressing possible sources of bias such as mount heterogeneity: doi.org/10.1016/j.ep...

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Andreas Zametzer @andizametzer.bsky.social · 06/09/2025

Brand-new study on carbonatites in the central Australian Aileron Province. The carbonatites were emplaced at ca. 830 Ma when the Rodinia Supercontinent started breaking apart and host the critical mineral Niobium (Nb). doi.org/10.1017/S001...

doi.org

Multi-method geochronology and isotope geochemistry of carbonatites in the Aileron Province, central Australia | Geological Magazine | Cambridge Core

Multi-method geochronology and isotope geochemistry of carbonatites in the Aileron Province, central Australia - Volume 162

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Reposted by Andreas Zametzer

Milo Barham @milobarham.bsky.social · 20/05/2025

Studies of heavy minerals have been challenging to perform at scale. We've gleaned some interesting new understanding from continental-scale HM analysis from Australia but with implications for sediment routing studies globally.

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Reposted by Andreas Zametzer

Timescales of Mineral Systems Group, EPS, Curtin University @timescaleseps.bsky.social · 17/05/2025

#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...

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Reposted by Andreas Zametzer

Chris K @geochronchris.bsky.social · 12/03/2025

Old rocks and even more ancient Earth history from down under. youtu.be/y1BiUYWwf_A?...

youtu.be

World’s oldest impact crater found, rewriting Earth’s ancient history

YouTube video by Curtin University

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Reposted by Andreas Zametzer

Chris K @geochronchris.bsky.social · 10/03/2025

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...

theconversation.com

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.

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Reposted by Andreas Zametzer

Nature Portfolio @natureportfolio.nature.com · 11/03/2025

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. go.nature.com/3DrWafY ⚒️ 🧪

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

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