Richard James Brown
@Earth_Sci_Richy
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Geologist | Volcanologist | GIS User | Educator | He/him | Father | Views my own
Durham, UK
Joined September 2019
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My 6 yo daughter wanted "the people on the internet" to see her fairy garden. If you can drop a like or a quick comment, she'd be thrilled. Thx.
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Great example of lava levees in bottom left. Notice how the lava is moving fastest in the middle of the channel? Lava at the margin slows, cools and solidifies to form levees that help contain the flowing lava. The levees are built up by overspills from the channel.
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One of the clearest videos of a pyroclastic flow that I have ever seen. Terrifying.
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Thank you, People of the Internet. I told her at bedtime that lots of people had said how wonderful her garden was and she replied "I can't believe I'm so famous!" I will show her your lovely comments in the morning. Thank you for your little rays of sunshine.
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Prof Dave Selby drawing folded rocks in the White Mountains on a perspex sheet. He can then trace over it in his notebook to make an accurate sketch
#fieldskills
#Geology
@DurUniEarthSci
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This really highlights the impact of volcanic ash fallout. It covers the ground like snow but is made of tiny bits of frozen magma. It's harmful to breathe, abrasive and dense. Failure to remove from roofs can result in collapse.
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Great day at Laacher See volcano, Germany, with MRes Adam Welsh, logging through ash and pumice layers. The sun even appeared.
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@ivadixit
I just ordered a 'latte' in Italy. Everywhere in the UK this would get you a 'cafe latte'. In Italy they stare at you like you are a monster and then dump a jug of warm milk on your table. I should know this as I lived in Italy for two years. Oh well.
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A volcanic 'waterfall' - tumbling incandescent blocks shed from a lava flow as it cascades over a precipice. Incredible.
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This is really unique footage. Study of old scoria cones indicates that this is a common process, particularly on slopes. The lava is denser than the material that makes up the cone and, once destabilised, the latter can float away on the former.
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Last day of pyroclastic bootcamp with
@GeoTenerife
@GeoIntern
and we stumble across this stupendous quarry...but could we sort out the stratigraphy...? Some strange pumice fall deposits have appeared...evidence of previously unknown eruptions? Kinda hope so...
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End of another great week on Tenerife with the
@GeoIntern
students, picking apart the record of explosive volcanism on Tenerife.
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Back on Tenerife with
@GeoTenerife
@GeoIntern
to continue our work on the eruptive history of Las Cañadas caldera. Training today at one of the best outcrops on the island
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An image that encapsulates the challenges of clearing up volcanic ash following an eruption
La magnitud de la acumulación de
#Cenizas
en zonas próximas a la 🌋
#Erupci
ónLaPalma, ilustrada con una foto. 😲 Vía
@victorhugopi
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1. Note to all
#EarthScience
#geology
graduate students/ECRs: when writing information about field localities, include some notes about how the passage of time may influence the outcrop and access to it. If you return in the future things may look very different.
A thread.
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Final day of fieldwork at Laacher See, Germany. Found some enormous volcanic ash aggregates, saw life emerging from a piece of frozen magma, CO2 bubbling out from the depths of the Earth's crust, and, importantly, caught up with an old friend.
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A thread on refinding long-lost geology outcrops... 2 photos of the same pyroclastic deposits taken 18 years apart. I'd recce'd here with
@GeologyLeics
Prof Mike Branney in 2005. Failed to record the location and 18 years of life erased any memory of where it was.
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Today we are sampling the monstrous pumice fall deposit of the 55 ka Green Tuff caldera-forming eruption: 10 metres of chaos topped by 6 metres of very hot welded chaos.
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Found some spectacular lithophysae in hydrothermally altered rhyolite lavas in Long Valley today. Anyone know a good paper on how these form?
@DurUniEarthSci
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Back on Tenerife with
@Durham_Volc
@DurUniEarthSci
MRes students Louis Chambers and former
@GeoIntern
@GeoTenerife
Ryan Bailey to fill in gaps in Las Cañadas caldera's volcanic history. It's painstaking detective work measuring and describing each layer of pumice, ash and soil.
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This is my Nan. 100 years old today. She helped build the
#Spitfires
that shot
#Nazis
out of the air in
#WW2
. She dodged Nazi bombs in London as a teenager. Happy Birthday, Nan!
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Our volcanology fieldtrip on Tenerife is coming to an end. Great volcanic rocks and great students. Thanks
@GeoTenerife
for hosting us!
@DurUniEarthSci
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For 3000 years we have been recording the location of rocks + minerals on the Earth's surface. It's exciting to be continuing that with
@BGSvolcanology
as we make a new geological map of Ascension Island. I'll be posting about the process over the next few weeks
@DurUniEarthSci
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Very proud that Dr
@beccawinnie
passed her viva today! Lots of great work on fab volcanic rocks on
#AscensionIsland
. Many thanks to
@BGSvolcanology
Dr Sue Loughlin,
@VolColMac
and
@claire_horwell
for examining.
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Putting together a
#virtualfieldtrip
for Level 3 students. Can I get them to pretend they're on a bus for an hour and then walk around their bedrooms for 20 mins between virtual outcrops? Cos 1 hour of virtual
#geology
seems to equal >4 hours of prep and I have 3 days to fill...
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It's not diificult to see why ancient civilisations thought volcanoes were the gateways to bad places.
Más imágenes de la erupción grabadas a las 20.30 (hora canaria) para finalizar el día de hoy / More footage of the eruption recorded at 8.30 pm (Canarian hour) to conclude today’s live tweeting of Cumbre Vieja activity
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Part of the new
@BGSvolcanology
@DurUniEarthSci
Ascension Island geological map is at the next stage: each outcrop now coded in ArcMap with a rock type. Lots of to-and-fro between PC, photos, drone video, fieldslips and notebooks.
@AscensionVolc
@AIGConservation
@ascension_gov
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Driven with precision by my incredible INGV colleagues. Only millimetres to spare (wing mirrors in, of course).
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Son punched the air in excitement on hearing his school was closed. Then he rolled on his back in despair when I explained that mummy and daddy would be doing
#homeschooling
.
I fully sympathise.
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Nearing the end of a week with these awesome young geoscientists. We've been hunting pumice fall deposits across Tenerife and have made some great advances. The A-Team. Lots of fun and lots of learning for them and me.
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Perfect way to end a great day in the field with
@GeoIntern
@GeoTenerife
. Really impressed with the research the interns did in picking apart the lesser known history of Las Cañadas volcano
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Monte Epomeo, Ischia. 30 000 years ago this was under the sea. It has been pushed up at time-averaged rate of ~4cm/yr by a refilling magma reservoir. It's now subsiding.
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During large volcanic eruptions the ground can collapse into the underground magma reservoir. At Ischia this happened over 40 km². As it collapsed huge volumes of fractured rock were spat out along with magma to form these breccia deposits.
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Really important meeting today. Glad the office is looking tidy.
#homework
#COVID19
#homeoffice
#WorkFromHome
#BehindtheScenes
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Getting back to our new geological map of Ascension Island after covid disruption. An intriguing puzzle that needs to be patiently pieced together
@BGSvolcanology
@AscensionVolc
@AIGConservation
@ascension_gov
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3 days into pyroclastic fieldcamp and the
@GeoTenerife
@GeoIntern
students are flying. Here they are pulling apart a sequence of pumice fall deposits in a quarry we scouted from a distance yesterday.
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Many thanks to
@GeoTenerife
@GeoIntern
@volcano_katy
@janinekrippner
for a great week on Tenerife with nextgen geoscientist!
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A day in the Tungsten Hills for our
@DurUniEarthSci
MSci students thinking about mineralisation associated with volcanism and granites in the Sierra Nevada. Some awesome boulders om the ground.
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1/2 At the start of my career I did a lot of
#fieldwork
on Ischia in the Bay of Naples. Everyday I would buy my lunch from Macri Mario in the harbour. I just walked back in after a decade-and-a-half and straightaway he asks me 'How are the
#volcanoes
? All calm?'..
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It was Panum Crater Day for our MSci students and another chance to marvel at the myriad textures of ultraproximal, rheomorphic ignimbrites
@DurUniEarthSci
@WadsworthFabian
@Volcannabelle
@HTuffen
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Congratations to
@_honorj
for submitting her MRes thesis on a volcanic debris avalanche on Ascension Island 😃 A pleasure to work alongside you.
@DurUniEarthSci
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Let's make this viral like
#coronavirus
. While he gibbers and lies, people suffocate and die.
Twat
@realDonaldTrump
From reddit user via
@Independent
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How's your day going? I just dropped my car keys in one of these
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Took the
@GeoIntern
students to the outcrop today - my last day in the field with them. An amazing location to learn more about Tenerife's volcanic past and gather some great data. Very happy to have refound the location. Job done. Thanks
@GeoIntern
@GeoTenerife
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Neat volcanic deposit on Ischia with crystalline rocks (grey) and pumice (beige). During
#eruption
rock was torn from edges of a 7 km deep
#magma
reservoir and landed hot amongst the pumice. Orange halos result from thermal alteration of the pumice.
#EarthScienceWeek
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Mid-career academics: how do you learn new skills? All training courses are (rightly) aimed at
#ECRs
and my time is at an extreme premium. Is it all vicarious through ECRs/post-grads? Would love to learn some new technical skills, but where are the opps?
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@Emiliagnathus
@seis_matters
Did the same. Locked myself out of the house 10 mins before chairing an online meeting. Did it in a unique way that meant no other key could open the door. Had to find and then strap together two ladders to get back in. Cancelled meeting.
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Many thanks to
@UCLA
White Mountain Research Centre for welcoming us back to Bishop! A great base for our MSci fieldtrip. Jet lag woke me before 5 am, but it's the best time to view the Sierra Nevadas
@DurUniEarthSci
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I'm at the stage of my career now where I'm rarely first author on a scientific paper, but when I am, the immense amount of work it takes to draw a paper together still surprises me. Sending out encouragement to first authors everywhere.
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On Monday they had never described a Plinian pumice fall deposit but by Friday they had gathered so much data and gained so much knowledge they were pulling apart the literature and debating each other on correlations.
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Early morning Lexia session with the 7 yo. Think they are missing an option.
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Big thanks to
@IgnacioGarciaGT
@GeoTenerife
, Alexis Schwartz and the interns for making it happen.
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6 year old has started working on his magnus opus. Expect great things.
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So... 20 years in academia has shown me that people rarely change their minds + that innovations in thinking largely come from new and young people thinking about problems in different ways. Old ways die with those who hold them dear. Education is so very important for progress.
Italy to put sustainability and climate at heart of learning in schools
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My office today is open plan and I share it with these great scientists from
@INGVvulcani
Thinking again about the Green Tuff eruption on Ischia, on my mind for 2 decades now...
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Heading back to Ischia to work with scientists from
@INGVvulcani
on the big caldera-forming eruption - work I started 19 years ago. Reliably informed that Mont Epomeo has subsided a few millimetres in that time, so the daily walks to the top will be quicker.
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@FabianWadsworth
here is a picture of a cannon and a volcano on Ascension Island for the next time you give a presentation on volcanic bombs
@DurUniEarthSci
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Off to London to talk to school HE Advisors about why they should encourage students to study
#EarthSciences
:-)
@DurUniEarthSci
@durham_uni
@Plexalcity
@HereEast
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A real pleasure chatting to staff at
@UofGGES
in my first term as External Examiner for Geol + Env Sci degrees. Fantastic work supporting students through covid and delivering great and innovative teaching. Looking forward to next year!
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There is A LOT going on in this image. I find them fascinating. I'll try and interpret but others may fare better. The lower beige part is spreading through the atmosphere, ash is falling from it and being blown towards the volcano.
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@janinekrippner
San Miguel, El Salvador, in full swing in 2013. Photo by Milton Parada, amateur photographer and local resident. Just submitted a paper on it
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Think
#geology
is all about the past? Nuh-uh. This is what excites
#DUOpenDay
visitors to
@DurUniEarthSci
@durham_uni
about studying geology and the
#EarthSciences
. An important, relevant, exciting subject in which you can make a difference to our future.
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Today two of our
@DurUniEarthSci
MSci students, Rachel and Saffie, discussed the
#VolcanicHazards
of Long Valley caldera. They came up with this excellent puzzle to see if their peers had been listening to them: place the volcanic rocks in their correct location in the caldera.
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I run admissions in our dept. Just met a prospective student and his mother and they came bearing gifts! Thank you!
#TimeForACuppa
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A hot day in Death Valley where the thermometer hit 38°C as we discussed groundwater flow, climate change and tectonic evolution of the basin and range. Definitely deserved the
@ChinaRanch
date shakes at the end of the day
@DurUniEarthSci
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Wow. The spurting incandescent fountain is made of molten fragments of magma ('pyroclasts'). Some of them land on the black cone or roll down it and contribute to the cone's growth. Pyroclasts that land in the crater may coalesce back to a liquid and flow away as lava.
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Had a fantastic time last week outlining where
#EarthScientists
fit into a
#netzero
carbon future at
#DuOpenDay
@DurUniEarthSci
@careersatdurham
@durham_uni
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We spent the day on Crater Mountain, Big Pine volcanic field. Not sure I understand it. Maybe a lava shield volcano that evolved into a scoria cone? There's some lava collapse pit craters (right term?) on the western + southern shoulders of the lava shield
@DurUniEarthSci
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Field work on Ischia is not complete without A) getting lost in dense vegetation and B) an impromptu invitation to sample the local wine in a cave.
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Kids preparing for post-covid, post-brexit life in the UK by learning how to build a shanty town. Next up: cooking a rat
#LifeLessons
#COVID19
#BrexitReality
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Took my work pc monitor home so I can plug it into my laptop. Felt like a
#looter
.
#lockdownuk
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Looking forward to meeting future students (and their parents and guardians) at our
@durham_uni
@DurUniEarthSci
open days tomorrow and Saturday. Come and see what Earth Science is all about.
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Early mornings in our house are craft class. Here's Rudolph drawn by our 4 year old. She never fails to throw little shards of light through the gloom.
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Well done, Becca! Seems like only yesterday we were hiking around on Ascension Island scratching our heads, and now you've sorted it. A great pleasure to have worked with you. Enjoy your week off!
PhD Thesis is complete 💪🏼 a huge thank you to my supervisors
@Earth_Sci_Richy
@KatieJPreece
@volcano_katy
and Charlotte
@BGSvolcanology
for just being the best! 🌋
@DurUniEarthSci
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This should be on the reading lists of every Earth Sci undergraduate.
The role of geoscience in achieving the
@SDGoals
is the subject of a new book edited by BGS'
@JoelCGill
, Martin Smith and
@Geo_Dev
, a charity which aims to promote the role of geology in sustainable development.
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Heading up the other side of Monte Epomeo today to the base of the intra-caldera ignimbrite amongst the fumarole fields - one of my favourite places on Ischia 😀
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Our virtual volcanology fieldtrip to Tenerife enters its final day. Our
@DurUniEarthSci
students are off on an independent exercise to understand the eruption and hazards from a small volcano on Tenerife. We've all learnt a lot about Tenerife and virtual learning.
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The thermal structure of a lava fountain. Brighter parts are hotter. Core of fountain is hottest (~1000°C), outer parts are cooler by a few hundred degrees as they have mixed with air (at ~25°C). Cooler pyroclasts (magma bits) can be seen raining onto the cone on the right.
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A sobering collection of drone images from the
#LaPalma
eruption that illustrate the ongoing destruction from lava and volcanic ash. Thank you
@LetUsUniteHere
for sharing.
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Our MSci fieldtrip starts in a place that epitomises our transient dominance over nature:
#LasVegas
, an artificial, water-hungry oasis in the southern Nevada desert. Water and the hydrosphere are big discussion points on this trip
@DurUniEarthSci
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@KellyOS05242350
@GeoTenerife
22 years ago I sat in the sun and logged this outcrop during my PhD research
@GeologyLeics
. Fun times 🌋
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My 5 yo son's interpretation of why we can't visit uni cafe b4 school due to
#UCUstrike
"There's naughty people there who don't give out enough money"
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Our son picked up this
#fossil
horse tooth(?) in a stream near Durham, UK, yesterday. Anyone able to ID it, please? I think it might be a Pleistocene Equus?
#paleontology
#palaeontology
#FossilFriday
@NHM_London
@NHM_Science
@smithsonian
@NMNH
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Kicked off our
@DurUniEarthSci
MSci Virtual Fieldtrip to the USA by having 10 mins to research and summarise the geology under a randomly generated lat/long! Ended up in a field in Iowa!
@durham_uni
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More water sampling for our
@DurUniEarthSci
MSci students today, this time: Convict Lake in the eastern Sierra Nevada Mtns. Should be clean and clear...
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Italians and Spanish seem to have zero problems with wearing facemasks even with daily cases a fraction of those in the UK...
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Our MSci students are also conducting a gravity survey across the northern margin of the Long Valley caldera, site of the 760 ka Bishop Tuff supervolcano eruption, to try and work out what's under the ground. Thanks to Prof Basil Tikoff and
@uwgeoscience
for their support.
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Beautifully illustrates how 'a'ā lava moves. As the hot interior is exposed to the air, it cools, partially soldifies and breaks into chunks that roll down the front and are buried as the lava advances.
Vídeo termográfico del avance de la colada actualmente activa al sur de la erupción, en la que se midieron alrededor de 1200°C / Thermographic video of the progress of the currently active lava flow in the southern area of the eruption, measuring around 1200 ° C
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