Matthew Gleeson

HEALTH UPDATE: It has officially been one year since I contracted Covid-19 while on set for my movie that I’ve been working on. I was once a very healthy 31-year old man, but now every day is a struggle for me. A THREAD... 🧵

@Penny_Wieser Don't crush my rocks!!!

Also working with @MattGleesonGeo on xenoliths is a balance between him wanting everything insitu for beautiful chemical maps and me wanting to run the whole xenolith through the jaw crusher so we get easy loose xstals to work with. Finding a happy medium eventually!

After what feels like months of constant grant writing, lab admin, coding up EOS I finally got to spend an ENTIRE DAY in the lab with some Galapagos fluid inclusions and it's made me so happy to do science, rather than just write about it! #NSFfunded

I'll be talking at 2:50 pm today about how we've made thermodynamic calculations easy for anyone to run in Python, and how to integrate these results with other tools (e.g. PySulfSar). Come and find out how to make PetThermoTools part of your Python workflow! #AGU23

@LissenbergJohan @CU_EARTH Sounds awesome, kind of wish I could apply 🤣

Interested in doing a PhD on the Earth's #mantle? Check out this great opportunity @CU_EARTH to work on the unique 1.2 km long core of mantle rocks that we recovered this year: findaphd.com/phds/project/n…

Interested in determining the P-T-X conditions of magma storage? Check out a preprint of our review for the Treatise of Geochemisty! doi.org/10.31223/X50M44

Us secretly hoping Lupin had a small breed in him so he would stop growing.... @embarkvet shows otherwise haha. Still 100% good boy.

Our new paper, modeling melt-mush reaction to determine porosity changes during reactive flow, is out! TLDR: Melt-mush reaction is complex, but magma recharge into gabbroic mush zones could lead mush dissolution and the formation of melt channels! @LissenbergJohan @magmasource

Preprint alert! TLDR: Recent interpretations of magma storage on the moon are plagued by very large analytical errors, such that almost all of the ~200 km of translithospheric storage can be attributed to propagation of analytical error....🧵eartharxiv.org/repository/vie…

New paper! PySulfSat is an open-source python tool for modeling sulfide and sulfate saturation in magmas! This comes from @Penny_Wieser and @MattGleesonGeo and you can get it here: doi.org/10.30909/vol.0…

Therefore, we suggest that melt channelization trigger by melt replenishment could provide a critical mechanism of melt transfer within mush dominated magmatic systems.

This process might be aided by the conductive transfer of heat from the new intrusion into the much, and natural samples show clear evidence of clinopyroxene dissolution following sill intrusions.

New preprint alert! doi.org/10.31223/X5BD45 TLDR: We modelled the influence of melt-mush reaction on mush porosity. Mineralogy of the reacted solid material controls whether the mush porosity increases or decreases due to reactive flow! @LissenbergJohan @magmasource

@marinebou_FR @CrpgNancy @IODP_France Really nice work @marinebou_FR big implications for magma differentiation and transport. @LissenbergJohan and I have also been modelling MMR from a thermodynamic perspective (doi.org/10.31223/X5BD45). Our results are mostly consistent (i.e. the importance of melt recharge)!

📢New perspective paper on the role of melt-mush reactions in the formation of igneous cumulates📢 (with some #MagmaChamberSimulator modeling of MMRs and some thoughts on different types of reservoirs…) Oceanic crust based 🌊 @CrpgNancy @IODP_France

RT to confuse an American.

@OlivierNamur @Penny_Wieser @corinjorgenson @Saffybonbon We're planning to run a lot more tests on EDS vs WDS data collection in the future. Really it seems WDS is only necessary/beneficial at low concentrations (especially for samples were beam damage/alkali migration is a concern)

@OlivierNamur @Penny_Wieser @corinjorgenson @Saffybonbon When I was testing this I was more thinking about the possibility of analysing small melt inclusions (where you aren't able to defocus the beam on an EPMA). One of the advantages of EDS is you can get excellent data with a beam current <1nA, useful for beam sensitive materials!

New preprint alert! Ever performed Cpx-based barometry in arc magmas? Perhaps like me, you've wondered what the "best" model to use is.... 1/N doi.org/10.31223/X59655