Gonzalo
@casiellesgeology.bsky.social
Pinned
Gonzalo
@casiellesgeology.bsky.social
· Oct 28
⚒🟢 #MineralMonday Emeralds from the Franqueira Mine, Galicia, northwestern Spain.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
Reposted by Gonzalo
208 of #365Minerals 🧪⚒️
Astrophyllite:
- A rare silicate mineral
- Forms in alkali granite
- First discovered in 1844
- Its name comes from the Greek words "άστρον/astron" (star) and "φύλλον/phyllon" (leaf) because of its starburst shape #minerals
Astrophyllite:
- A rare silicate mineral
- Forms in alkali granite
- First discovered in 1844
- Its name comes from the Greek words "άστρον/astron" (star) and "φύλλον/phyllon" (leaf) because of its starburst shape #minerals
July 27, 2025 at 12:45 PM
208 of #365Minerals 🧪⚒️
Astrophyllite:
- A rare silicate mineral
- Forms in alkali granite
- First discovered in 1844
- Its name comes from the Greek words "άστρον/astron" (star) and "φύλλον/phyllon" (leaf) because of its starburst shape #minerals
Astrophyllite:
- A rare silicate mineral
- Forms in alkali granite
- First discovered in 1844
- Its name comes from the Greek words "άστρον/astron" (star) and "φύλλον/phyllon" (leaf) because of its starburst shape #minerals
Reposted by Gonzalo
The Herefordshire Biota, a diverse assemblage of animals from the Silurian-age rocks of the UK. Among the largest animals is Thanahita, a strange relative of Hallucigenia with soft papillae lining its back.
February 5, 2025 at 4:22 AM
The Herefordshire Biota, a diverse assemblage of animals from the Silurian-age rocks of the UK. Among the largest animals is Thanahita, a strange relative of Hallucigenia with soft papillae lining its back.
Reposted by Gonzalo
"Across all ecological scales, we find clear trends, starting with stochastic ecosystem dynamics dominated by generalist taxa in the first Ediacaran communities, to more structured, niche-driven specialist dynamics by Cambrian Epoch 2"
doi.org/10.1017/pab....
🧪 #EvoBio #Paleobio #Macroecology ⚒️
doi.org/10.1017/pab....
🧪 #EvoBio #Paleobio #Macroecology ⚒️
January 22, 2025 at 6:50 PM
"Across all ecological scales, we find clear trends, starting with stochastic ecosystem dynamics dominated by generalist taxa in the first Ediacaran communities, to more structured, niche-driven specialist dynamics by Cambrian Epoch 2"
doi.org/10.1017/pab....
🧪 #EvoBio #Paleobio #Macroecology ⚒️
doi.org/10.1017/pab....
🧪 #EvoBio #Paleobio #Macroecology ⚒️
Reposted by Gonzalo
1 of #365Minerals 🧪⚒️
Quetzalcoatlite:
- Named after Quetzalcoatl, an Aztec and Toltec god of the sea, due to its sea-blue colour
- Forms in the oxidised zone of tellurium-bearing hydrothermal deposits #minerals
- This below is a co-type specimen (one of the specimens used to define the species)
Quetzalcoatlite:
- Named after Quetzalcoatl, an Aztec and Toltec god of the sea, due to its sea-blue colour
- Forms in the oxidised zone of tellurium-bearing hydrothermal deposits #minerals
- This below is a co-type specimen (one of the specimens used to define the species)
January 1, 2025 at 9:43 AM
1 of #365Minerals 🧪⚒️
Quetzalcoatlite:
- Named after Quetzalcoatl, an Aztec and Toltec god of the sea, due to its sea-blue colour
- Forms in the oxidised zone of tellurium-bearing hydrothermal deposits #minerals
- This below is a co-type specimen (one of the specimens used to define the species)
Quetzalcoatlite:
- Named after Quetzalcoatl, an Aztec and Toltec god of the sea, due to its sea-blue colour
- Forms in the oxidised zone of tellurium-bearing hydrothermal deposits #minerals
- This below is a co-type specimen (one of the specimens used to define the species)
Reposted by Gonzalo
Was reminded of this lovely little feature I wrote on Xu Xing, who has named more dinosaurs than any other living palaeontologist.
And to think, he didn't even want to study dinosaurs but had no choice.
Have a reshare for #FossilFriday:
www.nhm.ac.uk/discover/xu-...
And to think, he didn't even want to study dinosaurs but had no choice.
Have a reshare for #FossilFriday:
www.nhm.ac.uk/discover/xu-...
Xu Xing: the palaeontologist who's named the most dinosaurs
Within the world of dinosaurs Xu Xing is a globally important figure.
www.nhm.ac.uk
December 13, 2024 at 5:05 PM
Was reminded of this lovely little feature I wrote on Xu Xing, who has named more dinosaurs than any other living palaeontologist.
And to think, he didn't even want to study dinosaurs but had no choice.
Have a reshare for #FossilFriday:
www.nhm.ac.uk/discover/xu-...
And to think, he didn't even want to study dinosaurs but had no choice.
Have a reshare for #FossilFriday:
www.nhm.ac.uk/discover/xu-...
#Geochemistry Strontium in seawater through deep time 🧪⚒️
Strontium has several stable isotopes. One of them is Sr-87, which is formed by the radioactive decay of Rb-87, an isotope with a super long half-life of 4.92*10^10 years. Today seawater has the same Sr-87/Sr-86 ratio everywhere,
Strontium has several stable isotopes. One of them is Sr-87, which is formed by the radioactive decay of Rb-87, an isotope with a super long half-life of 4.92*10^10 years. Today seawater has the same Sr-87/Sr-86 ratio everywhere,
December 10, 2024 at 9:34 PM
#Geochemistry Strontium in seawater through deep time 🧪⚒️
Strontium has several stable isotopes. One of them is Sr-87, which is formed by the radioactive decay of Rb-87, an isotope with a super long half-life of 4.92*10^10 years. Today seawater has the same Sr-87/Sr-86 ratio everywhere,
Strontium has several stable isotopes. One of them is Sr-87, which is formed by the radioactive decay of Rb-87, an isotope with a super long half-life of 4.92*10^10 years. Today seawater has the same Sr-87/Sr-86 ratio everywhere,
Reposted by Gonzalo
The extremely unusual tooth whorl of the extinct shark species Helicoprion bessonowi. #FossilFriday ⚒️🧪🦖🦈
December 6, 2024 at 12:20 PM
The extremely unusual tooth whorl of the extinct shark species Helicoprion bessonowi. #FossilFriday ⚒️🧪🦖🦈
Reposted by Gonzalo
About me: I am interested in geodynamics, plate tectonics, natural hazards, georesources and the carbon cycle - using numerical models like the one below. 🧪⚒️
I co-organize and post about the monthly online #RiftAndRiftedMarginsSeminar. More infos here: tinyurl.com/RiftAndRiftedMarginsSeminar
I co-organize and post about the monthly online #RiftAndRiftedMarginsSeminar. More infos here: tinyurl.com/RiftAndRiftedMarginsSeminar
November 20, 2024 at 7:51 AM
About me: I am interested in geodynamics, plate tectonics, natural hazards, georesources and the carbon cycle - using numerical models like the one below. 🧪⚒️
I co-organize and post about the monthly online #RiftAndRiftedMarginsSeminar. More infos here: tinyurl.com/RiftAndRiftedMarginsSeminar
I co-organize and post about the monthly online #RiftAndRiftedMarginsSeminar. More infos here: tinyurl.com/RiftAndRiftedMarginsSeminar
Reposted by Gonzalo
Results from the #paleostream!
Yuanyanglong, Romaleodelphis, Anaptomorphus and Armatites.
Yuanyanglong, Romaleodelphis, Anaptomorphus and Armatites.
November 18, 2024 at 1:10 AM
Results from the #paleostream!
Yuanyanglong, Romaleodelphis, Anaptomorphus and Armatites.
Yuanyanglong, Romaleodelphis, Anaptomorphus and Armatites.
Reposted by Gonzalo
Hesperonychus elizabethae - pencil crayons and pen
November 18, 2024 at 5:09 AM
Hesperonychus elizabethae - pencil crayons and pen
#MineralMonday Sphalerite and dolomite from a Cretaceous Pb-Zn hydrothermal ore deposit. #oredeposits #sphalerite #minerals
www.instagram.com/casiellesaur...
www.instagram.com/casiellesaur...
Gonzalo Casielles on Instagram: "⚒ #MineralMonday Sphalerite (dark brown) and dolomite (beige) from the Troya mine, a Cretaceous zinc-lead deposit from Gipuzkoa, Basque Country, Spain.
The Troya mine...
35 likes, 0 comments - casiellesaurus on April 1, 2024: "⚒ #MineralMonday Sphalerite (dark brown) and dolomite (beige) from the Troya mine, a Cretaceous zinc-lead deposit from Gipuzkoa, Basque Country...
www.instagram.com
November 11, 2024 at 12:31 PM
#MineralMonday Sphalerite and dolomite from a Cretaceous Pb-Zn hydrothermal ore deposit. #oredeposits #sphalerite #minerals
www.instagram.com/casiellesaur...
www.instagram.com/casiellesaur...
Precambrian Banded Iron Formations, the world’s largest source of iron. #oredeposits
www.instagram.com/casiellesaur...
www.instagram.com/casiellesaur...
Gonzalo Casielles on Instagram: "The alien Earth recorded by banded iron formations (BIFs).
These odd rocks are chemical sediments that were deposited on Precambrian sea floors, in a world that would...
47 likes, 1 comments - casiellesaurus on June 26, 2024: "The alien Earth recorded by banded iron formations (BIFs).
These odd rocks are chemical sediments that were deposited on Precambrian sea floor...
www.instagram.com
November 9, 2024 at 2:13 PM
Precambrian Banded Iron Formations, the world’s largest source of iron. #oredeposits
www.instagram.com/casiellesaur...
www.instagram.com/casiellesaur...
Reposted by Gonzalo
🧵 Updated Shortlist of Geosciences Starter Packs🧵
Share and let us benefit from the current growth to bring people (back) to @bsky.app.
🧪⚒️🌋🌍💎🦖🪐🌊🌡️
Geosciences all topics
go.bsky.app/VFn34zW
Seismology
go.bsky.app/ND4oS9k
Paleontology by @alinemghilardi.bsky.social
go.bsky.app/QWhLarC
(1/6)
Share and let us benefit from the current growth to bring people (back) to @bsky.app.
🧪⚒️🌋🌍💎🦖🪐🌊🌡️
Geosciences all topics
go.bsky.app/VFn34zW
Seismology
go.bsky.app/ND4oS9k
Paleontology by @alinemghilardi.bsky.social
go.bsky.app/QWhLarC
(1/6)
November 9, 2024 at 9:46 AM
🧵 Updated Shortlist of Geosciences Starter Packs🧵
Share and let us benefit from the current growth to bring people (back) to @bsky.app.
🧪⚒️🌋🌍💎🦖🪐🌊🌡️
Geosciences all topics
go.bsky.app/VFn34zW
Seismology
go.bsky.app/ND4oS9k
Paleontology by @alinemghilardi.bsky.social
go.bsky.app/QWhLarC
(1/6)
Share and let us benefit from the current growth to bring people (back) to @bsky.app.
🧪⚒️🌋🌍💎🦖🪐🌊🌡️
Geosciences all topics
go.bsky.app/VFn34zW
Seismology
go.bsky.app/ND4oS9k
Paleontology by @alinemghilardi.bsky.social
go.bsky.app/QWhLarC
(1/6)
Reposted by Gonzalo
¡Hola, chavalada!
¿Te interesa la geología y las ciencias de la Tierra en general?
Este es un starter pack que mantengo, en español. Puedes seguir a todos, a algunos, o lo que te parezca. Pero échale un ojo.
Y por favor, sugiéreme a quién añadir al pack
go.bsky.app/7AJXuh1
#geología #ciencia 🧪⚒️
¿Te interesa la geología y las ciencias de la Tierra en general?
Este es un starter pack que mantengo, en español. Puedes seguir a todos, a algunos, o lo que te parezca. Pero échale un ojo.
Y por favor, sugiéreme a quién añadir al pack
go.bsky.app/7AJXuh1
#geología #ciencia 🧪⚒️
November 9, 2024 at 10:17 AM
¡Hola, chavalada!
¿Te interesa la geología y las ciencias de la Tierra en general?
Este es un starter pack que mantengo, en español. Puedes seguir a todos, a algunos, o lo que te parezca. Pero échale un ojo.
Y por favor, sugiéreme a quién añadir al pack
go.bsky.app/7AJXuh1
#geología #ciencia 🧪⚒️
¿Te interesa la geología y las ciencias de la Tierra en general?
Este es un starter pack que mantengo, en español. Puedes seguir a todos, a algunos, o lo que te parezca. Pero échale un ojo.
Y por favor, sugiéreme a quién añadir al pack
go.bsky.app/7AJXuh1
#geología #ciencia 🧪⚒️
Reposted by Gonzalo
The consolation of deep time. Went to the Harvard art museum and saw this 2,500 year-old relief from Achaemenid Persepolis. Noticed the shell fragments in the limestone, tried to track down the geology & (as best I can tell) these creatures were alive over 100 million years earlier in the Cretaceous
November 6, 2024 at 10:12 PM
The consolation of deep time. Went to the Harvard art museum and saw this 2,500 year-old relief from Achaemenid Persepolis. Noticed the shell fragments in the limestone, tried to track down the geology & (as best I can tell) these creatures were alive over 100 million years earlier in the Cretaceous
⚒🟢 #MineralMonday Emeralds from the Franqueira Mine, Galicia, northwestern Spain.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
October 28, 2024 at 7:16 PM
⚒🟢 #MineralMonday Emeralds from the Franqueira Mine, Galicia, northwestern Spain.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
#Emeralds are rare, valuable minerals famously used in jewellery. They are a variety of beryl (Be3Al2(SiO3)6) with trace amounts of chromium, which give them their green colour.
Amazing paleoart of a Miocene oyster reef! Here is a photo of 2 blocks from Stetten, Austria, at the Natural History Museum of Vienna #fossils #paratethys #miocene #crassostrea
October 27, 2024 at 5:57 PM
Amazing paleoart of a Miocene oyster reef! Here is a photo of 2 blocks from Stetten, Austria, at the Natural History Museum of Vienna #fossils #paratethys #miocene #crassostrea
Reposted by Gonzalo
Missoula MT, where I live, has some exquisite Eocene plant fossils! These Birch (Betula sp.) leaves were buried under a layer of volcanic ash probably near a mountain lake some 39 million years ago. There's a lot of other plants known from this locality, like Redwoods, Oaks, & Maples (among others)
October 26, 2024 at 9:19 PM
Missoula MT, where I live, has some exquisite Eocene plant fossils! These Birch (Betula sp.) leaves were buried under a layer of volcanic ash probably near a mountain lake some 39 million years ago. There's a lot of other plants known from this locality, like Redwoods, Oaks, & Maples (among others)
Let’s start with some #paleontology Eurohippus messelensis from the Natural History Museum of Vienna. This species is an early member of the horse family from the Messel Formation, Early-Middle Eocene transition of Hesse, Germany.
October 26, 2024 at 5:34 PM
Let’s start with some #paleontology Eurohippus messelensis from the Natural History Museum of Vienna. This species is an early member of the horse family from the Messel Formation, Early-Middle Eocene transition of Hesse, Germany.