Brian O’Driscoll @BODriscollEarth Twitter profile

Last Seen Profiles

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@LaborXNews

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@kanakimurazame

@bokeplokalmalam

@kanakimurazame

@bokeplokalmalam

@BinorRaja

@yohanemaru0208

Brian O’Driscoll

@BODriscollEarth

2 years

Folding in the Dalradian Lakes Marble Fm, Cur, Connemara…(sheep skull for scale)

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Brian O’Driscoll

@BODriscollEarth

11 months

I am recruiting for PhD and MSc students to start in Sept 2024 at uOttawa. Project topics to include layered intrusions and upper mantle petrology….with specific focus on ore mineralisation in these settings... Contact me on Brian.odriscoll @uottawa .ca for detail…

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Brian O’Driscoll

@BODriscollEarth

2 years

I am recruiting for PhD and MSc students to start in Sept 2023 at uOttawa. Project topics to include layered intrusions, upper mantle petrology and greenstone belts. Also - ore mineralisation in any or all of these areas. Contact me on Brian.odriscoll @uottawa .ca for detail…

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Brian O’Driscoll

@BODriscollEarth

2 years

Laminated kakortokite, Ilímaussaq Complex, southern Greenland, with (roughly) red phase = eudialyte; white phase = alkali feldspar; black phase = arfvedsonite. What a fabric!

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Brian O’Driscoll

@BODriscollEarth

9 months

Greatly enjoying going thru uOttawa EES collections of ore mineralisation in advance of teaching Mineral Deposits course next semester…

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Brian O’Driscoll

@BODriscollEarth

1 year

Table Mountain - lots of folding in the mantle!

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Brian O’Driscoll

@BODriscollEarth

1 year

Pyroxenites, dunites and chromitites in the upper mantle and lower crust - North Arm Mountain, BOIC…

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Brian O’Driscoll

@BODriscollEarth

2 years

Pillow basalts, Leka Ophiolite (Norway)

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Brian O’Driscoll

@BODriscollEarth

1 year

BOIC continued…layered (and folded) gabbroic crustal rocks, mantle tectonites and intrusive wehrlites…;)

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Brian O’Driscoll

@BODriscollEarth

1 year

Melt percolation in the mantle part of the ~500 Ma Shetland ophiolite, represent by dunite (smooth bits) in harzburgite. Left shows channelised flow, right more diffuse irregular melt flow. ‘Knobbly’ bits in harzburgite are orthopyroxene (pseudo morphs)

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Brian O’Driscoll

@BODriscollEarth

10 months

Successful sampling at Sudbury this week…some sulfide-mineralised veins have chlorite-rich rims (third photo) that also have high PGE concentrations - magmatic, hydrothermal, or somewhere in between?

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Brian O’Driscoll

@BODriscollEarth

1 year

BOIC has one of the best preserved soles of any ophiolite. Images are from a traverse through the lower mantle into the sole, looking at changes (serp veins, shear zones) in mantle as the high (garnet)-grade sole (grey rocks looking back toward mantle -brown rocks) is approached

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Brian O’Driscoll

@BODriscollEarth

1 year

Old ones! Magmatic layering in the gabbros of the Currywongaun intrusion, Connemara…

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Brian O’Driscoll

@BODriscollEarth

2 years

The Bon Accord Ni deposit - host to a number of minerals not known from anywhere else on Earth (including bonaccordite): left = hand specimen, bottom right = thin section, top right = ~5 m wide hole in Barberton where the deposit used to be before being mined out in 1800s…

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Brian O’Driscoll

@BODriscollEarth

2 years

Chromitite in the enigmatic Dawros Peridotite, Connemara ⁦ @jstephendaly ⁩

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Brian O’Driscoll

@BODriscollEarth

2 years

Rum layered intrusion (Scotland) poikilo-macro-spherulites Left: field photo - individual branches of structure are made of large plagioclase crystals; Right: optical microscope view of part of one branch – contains numerous brightly-colored (aligned) crystals of olivine…

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Brian O’Driscoll

@BODriscollEarth

1 year

Bay of Islands Ophiolite Complex sure hasn’t disappointed so far…scale and quality of geological exposure is superb…!

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Brian O’Driscoll

@BODriscollEarth

1 year

Great few days on Rum for ⁦ @IPS_Cardiff23 ⁩ field excursion. Colleagues from Brazil, Russia, China, Japan, Finland, South Africa, USA and UK all participated!

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Brian O’Driscoll

@BODriscollEarth

2 years

Mweelrea Formation (close to the top of Mweelrea)

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Brian O’Driscoll

@BODriscollEarth

2 years

Imbricated olivine crystals/(clasts!) - black objects strung out in layer in image centre - these are 3-4 cm long - in peridotite, Rum layered intrusion (Scotland)

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Brian O’Driscoll

@BODriscollEarth

9 months

New layered intrusion review paper…. Layered intrusions: Fundamentals, novel observations and concepts, and controversial issues - ScienceDirect

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Brian O’Driscoll

@BODriscollEarth

1 year

Spinel(s)-plagioclase-corundum assemblage from Ardnamurchan peninsula…wondering what these textures can tell us, if anything, about chromitite formation in magmatic settings….

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Brian O’Driscoll

@BODriscollEarth

1 year

Final day of Sudbury Offset Dyke fieldtrip - more Sudbury breccias, sulfide dykes, ultramafic xenoliths and amphibole needles. Thanks to Mike, Henning, Dustin and Sandra for showing us this fantastic geology! ⁦ @gacmacsga2023 ⁩

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Brian O’Driscoll

@BODriscollEarth

1 year

Awesome first (sunny) day on the ⁦ @gacmacsga2023 ⁩ Offset Dyke field workshop - impact breccias, including suevites, blue quartz, sulfides and inclusion bearing offset dykes…

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Brian O’Driscoll

@BODriscollEarth

11 months

Earth and Environmental Sciences at uOttawa…. @uOttawa @uOttawaScience

Earth and Environmental Sciences at uOttawa

Ever wonder about the Earth and Environmental Sciences programs at uOttawa?

www.youtube.com

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Brian O’Driscoll

@BODriscollEarth

1 year

Day 2 - Offset Dyke fieldtrip - superb breccias, magma mingling and sulfide mineralisation…⁦ @gacmacsga2023 ⁩

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Brian O’Driscoll

@BODriscollEarth

10 months

The Proterozoic Jormua ophiolite - an ancient analogue for modern day Red Sea opening? @justsomeisotope Oceanic and continental lithospheric mantle in the 1.95 Ga Jormua Ophiolite Complex, Finland: implications for mantle and crustal evolution

Oceanic and Continental Lithospheric Mantle in the 1.95-Ga Jormua Ophiolite Complex, Finland:...

ABSTRACT. The ca. 1.95-Ga Jormua Ophiolite Complex (JOC), Finland, is a rare Paleoproterozoic ophiolite that preserves a record of diverse upper mantle mat

academic.oup.com

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Brian O’Driscoll

@BODriscollEarth

1 year

Nice to be (nearly) back…:)

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Brian O’Driscoll

@BODriscollEarth

1 year

See pdf in thread with some details. Let me know by email if you have questions or want to register for this field excursion…

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Brian O’Driscoll

@BODriscollEarth

1 year

Great 14th IPS meeting in Cardiff this week. Fantastic range of talks, posters and especially good to catch up with old friends and colleagues. Thanks to ⁦ @CU_EARTH ⁩ for hosting us and Wolf Maier for leading the organisation ⁦ @IPS_Cardiff23 ⁩

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Brian O’Driscoll

@BODriscollEarth

2 years

@AnnaBirdian Existence of magma chambers (ok not massively polarizing, but worth asking…)

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Brian O’Driscoll

@BODriscollEarth

1 year

Element (Fe) map of sulfide inclusions (green) in magnetite (pink) attached to chromite (light blue) in metasomatized peridotite from the Nain ophiolite, Iran…

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Brian O’Driscoll

@BODriscollEarth

2 years

Good Morning @uOttawa @uOttawaScience @NewmontCorp #1stday #DeptofEES

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Brian O’Driscoll

@BODriscollEarth

1 year

Thoroughly enjoyed working with everyone involved on this weird and wonderful material #mineralogy #gold ? #trevorite #barberton @PatriciaLClay

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Brian O’Driscoll

@BODriscollEarth

2 years

Septechlorite rims on chromite - in dunite - Fetlar, Shetland

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Brian O’Driscoll

@BODriscollEarth

11 months

In situ TEM study of heavy-ion irradiation-induced amorphisation and e... More nuclear glass fun….

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Brian O’Driscoll

@BODriscollEarth

2 years

@rockswhisperer Hi John. It’s part of the South Mayo Trough north of Connemara. Forearc basin recording unroofing of Connemara terrane. Package contains coarse sst, volcanic, granitic and metamorphic detritus, as well as a few ignimbrite bands. Cool rocks 😎

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Brian O’Driscoll

@BODriscollEarth

1 year

@BrianODriscoll And now - the ABs…yay!😂

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Brian O’Driscoll

@BODriscollEarth

2 years

Dawros probably isn’t an ophiolite though it looks a lot like one! But it could sure do with a detailed Os isotope+HSE study…who knows what might fall out of that!

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Brian O’Driscoll

@BODriscollEarth

1 year

This day last year - Little Killary, Connemara

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Brian O’Driscoll

@BODriscollEarth

2 years

@CarrieAWalton @DrCraigMagee @seis_matters @Profiainstewart At 60 Ma I think Ardnamurchan was a bit to the south latitude-wise, and the NE Atlantic was only starting to open…but now we need a palaeomagnetism person to chip in…

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Brian O’Driscoll

@BODriscollEarth

1 year

The oceans are rich in critical minerals. But will miners be allowed to get them? | CBC News

This month, high-stakes international negotiations in Kingston, Jamaica, hosted by the International Seabed Authority could determine the future of deep sea mining and whether a Canadian-registered...

www.cbc.ca

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Brian O’Driscoll

@BODriscollEarth

10 months

@manenbu YES! 😂

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Brian O’Driscoll

@BODriscollEarth

2 years

@geologymull It’s been awesome James, thanks for doing it. Great to see so many familiar places and some less so. Nollaig shona duit (as Gaeilge)!

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Brian O’Driscoll

@BODriscollEarth

8 months

@CoxonCatherine Home!:)

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Brian O’Driscoll

@BODriscollEarth

1 year

Osiris-Rex: Asteroid Bennu 'is a journey back to our origins'

A handful of dust from an asteroid streaming through space could tell Nasa how life on Earth began.

www.bbc.co.uk

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Brian O’Driscoll

@BODriscollEarth

10 months

@Agpaitic_Adam Hey Adam…super happy for you. Many congrats and well deserved!

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Brian O’Driscoll

@BODriscollEarth

1 year

@GeologyLeics @The_Jow @uniofleicester RIP! His early work on the Carlingford Complex was excellent.

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Brian O’Driscoll

@BODriscollEarth

11 months

@The_Jow Isn’t dumortierite (inclusions) where the colour in rose quartz comes from?

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Brian O’Driscoll

@BODriscollEarth

2 years

@DrCraigMagee @seis_matters @CarrieAWalton @Profiainstewart That’s about the size of it @DrCraigMagee , tho realising as I write this that my PhD fieldwork was nearly 20 years ago - maybe time for someone else to go and test some of these ideas…

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Brian O’Driscoll

@BODriscollEarth

2 years

@CinTyLeeEarth If crystals are large and truly dendritic, I think this would point to problematic nucleation and fast growth…so I guess it depends on how big those tourmalines are (and their surface area to volume ratio)

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Brian O’Driscoll

@BODriscollEarth

1 year

@BobGooday @daviebrown1978 @geologymull Grand soft Mull day 😂

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Brian O’Driscoll

@BODriscollEarth

1 year

@justsomeisotope 😂

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Brian O’Driscoll

@BODriscollEarth

2 years

@LydWhit Great to hear Lydia, well done!

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Brian O’Driscoll

@BODriscollEarth

2 years

@KeeperNH @GeolSurvIE RIP Barry, you will be missed…

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Brian O’Driscoll

@BODriscollEarth

9 months

@geologymull Lovely, James. Thanks for doing this again this year. Mull is such a special place and when one knows it well but it is far away these pics really bring it to life!

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Brian O’Driscoll

@BODriscollEarth

1 year

@geologymull @FionaJean0203 @AndrewCKerr Yeah they are older than most things - check out this by @DrCraigMagee -

Magma Rheology Variations in Sheet Intrusions of the Ardnamurchan Central Complex (Scotland)...

Abstract. Entrainment of xenoliths and their consequent assimilation are key processes in modifying the crystallization kinetics and magma dynamics of cond

academic.oup.com

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Brian O’Driscoll

@BODriscollEarth

2 years

How Australia became the world's greatest lithium supplier via @BBC_Future

How Australia became the world's greatest lithium supplier

As demand soars for EVs and clean energy storage, Australia is rising to meet much of the world's demand for lithium. How can we source this lithium sustainably?

www.bbc.com

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Brian O’Driscoll

@BODriscollEarth

9 months

@Romiche29 Count yourself lucky if the response you get is addressed to the right person 😂

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Brian O’Driscoll

@BODriscollEarth

9 months

@geologymull Great photo!

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Brian O’Driscoll

@BODriscollEarth

2 years

14th International Platinum Symposium: Cardiff, Wales 4-7 July, 2023!

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Brian O’Driscoll

@BODriscollEarth

1 year

@The_Jow @EthanRockStory @_sashawilson_ Excellent garnet occurrences there! Vein hosted mostly, if I recall…

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Brian O’Driscoll

@BODriscollEarth

2 years

@JEinsle @FaithfullJohn Recovery was terrible because of how refractory the mineralogy was - couldn’t be smelted! It was mostly dumped and subsequently picked over…

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Brian O’Driscoll

@BODriscollEarth

2 years

@emmoxiely Hey Elliot @elliotjcarter :)

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Brian O’Driscoll

@BODriscollEarth

2 years

@Em_Waters_ @JEinsle 😂

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Brian O’Driscoll

@BODriscollEarth

2 years

@DrCraigMagee @EmilyTheGeo Yeah magnetic fabrics are complicated for these rocks. I have an AMS plus EBSD dataset on these plus lujavrites that I’ve finally been able to get back to recently.

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Brian O’Driscoll

@BODriscollEarth

1 year

@SLRogersGeol Is that Dr Gertisser I see swanning around in the middle distance?

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Brian O’Driscoll

@BODriscollEarth

1 year

@rugbyworldcup And the likely reward - a QF against the ABs 😂

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Brian O’Driscoll

@BODriscollEarth

2 years

@geologymull @metageologist @DrSadhbh I ran a Keele trip using Scoor for 8 years - after having been as an undergrad and PhD student several times…amazing field base!

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Brian O’Driscoll

@BODriscollEarth

2 years

@daviebrown1978 @JEinsle Active learning 🥶🥶😳

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Brian O’Driscoll

@BODriscollEarth

2 years

@The_Jow Hi Simon - be down there on Monday if you fancied a chat/coffee - would be good to meet you!

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Brian O’Driscoll

@BODriscollEarth

11 months

@Agpaitic_Adam Epitaxial growth 😂

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Brian O’Driscoll

@BODriscollEarth

1 year

@The_Jow Are these the ones on LU campus?

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Brian O’Driscoll

@BODriscollEarth

1 year

@geologymull @FionaJean0203 @AndrewCKerr Get good ones of these on Ardnamurchan too…

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Brian O’Driscoll

@BODriscollEarth

2 years

@geologymull @DrSadhbh Is John Wagstaff still going strong?

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Brian O’Driscoll

@BODriscollEarth

1 year

@HelenWCam And still only feel like I’ve scratched the surface in all cases 🤔😂

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Brian O’Driscoll

@BODriscollEarth

1 year

@FredFord64 Gorgeously cryptic 😂

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Brian O’Driscoll

@BODriscollEarth

2 years

@tiernanhenry 😂

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Brian O’Driscoll

@BODriscollEarth

1 year

@The_Jow Think you are right 😂

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Brian O’Driscoll

@BODriscollEarth

11 months

@rheologically Doesn’t look like perovskite is going to make it…

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Brian O’Driscoll

@BODriscollEarth

1 year

@DrSadhbh @jstephendaly Great thanks! I might drop you a line for a grid ref or more detailed info closer the time 🙏:)

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Brian O’Driscoll

@BODriscollEarth

2 years

@Strike_dip_com Nice

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Brian O’Driscoll

@BODriscollEarth

1 year

@KeelePetrology @KeeleGGE Ardalanish looking nice in the sun 👍

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Brian O’Driscoll

@BODriscollEarth

2 years

@TheJR @RGertisser Happy birthday Ralf…!

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Brian O’Driscoll

@BODriscollEarth

9 months

@geologymull (The 4th one)

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Brian O’Driscoll

@BODriscollEarth

1 year

@wallersaur @LyzzickHotel Do you commute to Keele weekly now, Rich?

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Brian O’Driscoll

@BODriscollEarth

1 year

@manenbu @richardmpalin @KeepItRheol @WeAreSeismica @WeAreVolcanica @WeAreTektonika @Geomorphica @sedimentologika @TheSedRecord @DrWDSmith

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Brian O’Driscoll

@BODriscollEarth

1 year

@deep_sample Very nice!

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Brian O’Driscoll

@BODriscollEarth

2 years

@FredFord64 @ItsMeDeaner Trepidatious 👀

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Brian O’Driscoll

@BODriscollEarth

2 years

@The_Jow @AirCanada Feel your pain 😂

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Brian O’Driscoll

@BODriscollEarth

1 year

@geologymull @FionaJean0203 @AndrewCKerr Down on the Ormsaibeg shoreline - a bit to the west of the campsite. They are vertically dipping dykes with up to 5 cm long plag xtls in their centres. I know of at least 3 such dykes there and think I have seen another over by Mingary. Can dig out coords if u are interested :)

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Brian O’Driscoll

@BODriscollEarth

1 year

With our food systems on the verge of collapse, it’s the plutocrats v life on Earth

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Brian O’Driscoll

@BODriscollEarth

10 months

@kutyrev_geology Very nice! Is it an exceptional process, or an exceptionally well preserved process?

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Brian O’Driscoll

@BODriscollEarth

2 years

@agalmatolite @scottishgeology Amazing looking resource!

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Brian O’Driscoll

@BODriscollEarth

1 year

@geologymull @FionaJean0203 @AndrewCKerr Actually there are ‘big feldspar’ extrusive rocks too - I think over toward Ben Hiant - but I’m less sure exactly where…

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Brian O’Driscoll

@BODriscollEarth

1 year

@JEinsle Looking good 👍

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Brian O’Driscoll

@BODriscollEarth

1 year

@DrSadhbh @jstephendaly I always wanted to visit this dyke - looks like from your photos it’s bonafide! I’ll make an extra effort to get up there when I’m back next year! Any access issues?

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