Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
@calamitaman.bsky.social
Geologist, blogger, and traveler, almost always in couple ❤️
🇪🇺 🇯🇵
Lived in 四国 🎎 and will miss it forever.
I post rocks as a stress relief ⚒️
My geology website: https://geologyistheway.com
🇪🇺 🇯🇵
Lived in 四国 🎎 and will miss it forever.
I post rocks as a stress relief ⚒️
My geology website: https://geologyistheway.com
Pinned
🚨PAPER ALERT🚨
This is a #serpentinite #shearzone.
It is part of a #subduction complex where oceanic serpentinites were subducted, sheared, carbonated, exhumed, and coupled with sediments that we recently described on the Island of Elba, Italy. A 3ad
#geology #RockInTuesday
1/x
This is a #serpentinite #shearzone.
It is part of a #subduction complex where oceanic serpentinites were subducted, sheared, carbonated, exhumed, and coupled with sediments that we recently described on the Island of Elba, Italy. A 3ad
#geology #RockInTuesday
1/x
Sheared mica grains (crosscut and smeared along shear bands marked by recrystallized quartz) in mylonitic paragneiss.
Lago Maccheronisi, Olbia, Sardinia, Italy
Sample donated by Alexstrekeisen.it
⚒️ #geology
Lago Maccheronisi, Olbia, Sardinia, Italy
Sample donated by Alexstrekeisen.it
⚒️ #geology
February 10, 2026 at 8:00 AM
Sheared mica grains (crosscut and smeared along shear bands marked by recrystallized quartz) in mylonitic paragneiss.
Lago Maccheronisi, Olbia, Sardinia, Italy
Sample donated by Alexstrekeisen.it
⚒️ #geology
Lago Maccheronisi, Olbia, Sardinia, Italy
Sample donated by Alexstrekeisen.it
⚒️ #geology
At some point in life I became a geologist, but I sometimes ask myself 'how would it be like to have chosen a different major?'
Gladly, I have recently had the opportunity to try the 'naturalist' life! Here is a preprint of my spider paper that's under review 😍
www.biorxiv.org/content/10.6...
Gladly, I have recently had the opportunity to try the 'naturalist' life! Here is a preprint of my spider paper that's under review 😍
www.biorxiv.org/content/10.6...
www.biorxiv.org
February 10, 2026 at 7:22 AM
At some point in life I became a geologist, but I sometimes ask myself 'how would it be like to have chosen a different major?'
Gladly, I have recently had the opportunity to try the 'naturalist' life! Here is a preprint of my spider paper that's under review 😍
www.biorxiv.org/content/10.6...
Gladly, I have recently had the opportunity to try the 'naturalist' life! Here is a preprint of my spider paper that's under review 😍
www.biorxiv.org/content/10.6...
This song is helping me coping with the stress of having to change country again
www.youtube.com/watch?v=4-a7...
www.youtube.com/watch?v=4-a7...
February 10, 2026 at 7:14 AM
This song is helping me coping with the stress of having to change country again
www.youtube.com/watch?v=4-a7...
www.youtube.com/watch?v=4-a7...
Sigmoidal structures (S-C structures) developed in deformed limestones within the Tellare fault. What's remarkable is the presence of white tensional veins (white) oblique to shear planes and parallel to the [theoretical] sigma 1.
See first comment for a sense of scale.
⚒️ #geology
See first comment for a sense of scale.
⚒️ #geology
February 9, 2026 at 2:11 PM
Sigmoidal structures (S-C structures) developed in deformed limestones within the Tellare fault. What's remarkable is the presence of white tensional veins (white) oblique to shear planes and parallel to the [theoretical] sigma 1.
See first comment for a sense of scale.
⚒️ #geology
See first comment for a sense of scale.
⚒️ #geology
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
Welcome back to #fossilfriday!
Here are the impressions of the Inoceramid clam Mytiloides mytiloides. This specimen comes from the Late Cretaceous (Cenomanian-Turonian) Greenhorn Formation (Colorado Group) in northwestern Nebraska.
Here are the impressions of the Inoceramid clam Mytiloides mytiloides. This specimen comes from the Late Cretaceous (Cenomanian-Turonian) Greenhorn Formation (Colorado Group) in northwestern Nebraska.
February 6, 2026 at 2:39 PM
Welcome back to #fossilfriday!
Here are the impressions of the Inoceramid clam Mytiloides mytiloides. This specimen comes from the Late Cretaceous (Cenomanian-Turonian) Greenhorn Formation (Colorado Group) in northwestern Nebraska.
Here are the impressions of the Inoceramid clam Mytiloides mytiloides. This specimen comes from the Late Cretaceous (Cenomanian-Turonian) Greenhorn Formation (Colorado Group) in northwestern Nebraska.
February 6, 2026 at 3:06 PM
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
#FossilFriday Polished floor tile in the British Museum consisting of Carboniferous crinoidal limestone. The larger of the crinoid fragments are sections of stem segments (columnals) from the these so-called ‘sea-lilies’.
February 6, 2026 at 9:06 AM
#FossilFriday Polished floor tile in the British Museum consisting of Carboniferous crinoidal limestone. The larger of the crinoid fragments are sections of stem segments (columnals) from the these so-called ‘sea-lilies’.
#FossilFriday pyritized ammonite from the Punta delle Rocchette Fm. Lower Jurassic.
February 6, 2026 at 9:41 AM
#FossilFriday pyritized ammonite from the Punta delle Rocchette Fm. Lower Jurassic.
#FridayFold folded Sinemurian limestones at Punta delle Rocchette, Southern Tuscany, Italy
#geology #tectonics #structuralgeology
#geology #tectonics #structuralgeology
February 6, 2026 at 7:55 AM
#FridayFold folded Sinemurian limestones at Punta delle Rocchette, Southern Tuscany, Italy
#geology #tectonics #structuralgeology
#geology #tectonics #structuralgeology
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
Upended strata pile-up in the Alps for #RockinTuesday. Parc National des Écrins (Yes, again! I had a fab time there last summer!), #France. Pointe des Estaris/Crête de Martinet (from the other side from yesterday...)
#mountains #mountaineering #geology #landscape #scape #photography #EastCoastKin
#mountains #mountaineering #geology #landscape #scape #photography #EastCoastKin
February 3, 2026 at 7:02 PM
Upended strata pile-up in the Alps for #RockinTuesday. Parc National des Écrins (Yes, again! I had a fab time there last summer!), #France. Pointe des Estaris/Crête de Martinet (from the other side from yesterday...)
#mountains #mountaineering #geology #landscape #scape #photography #EastCoastKin
#mountains #mountaineering #geology #landscape #scape #photography #EastCoastKin
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
Obicular #granite, #NewZealand. An uncommon type of granite when #magma crystallization rapidly occurs around seed crystals.
#geology #rocks #photography #science
#geology #rocks #photography #science
February 3, 2026 at 3:22 AM
Obicular #granite, #NewZealand. An uncommon type of granite when #magma crystallization rapidly occurs around seed crystals.
#geology #rocks #photography #science
#geology #rocks #photography #science
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
(Long) Before mobile phones: hand drawn PPL and XPL views of porphyritic dolerite from Ben Hiant, Ardnamurchan, Scotland. From my undergraduate mapping report. #ThinSectionThursday 🧪⚒️🌋
February 5, 2026 at 10:46 AM
(Long) Before mobile phones: hand drawn PPL and XPL views of porphyritic dolerite from Ben Hiant, Ardnamurchan, Scotland. From my undergraduate mapping report. #ThinSectionThursday 🧪⚒️🌋
Incredible rock! A retrogressed eclogite in which amazing simplectites developed during amphibolite-facies metamorphism. Garnet is surrounded by coronas of plagioclase and hornblende. Omphacite is replaced by diopside + plagioclase simplectites. ❤️
⚒️ #geology
⚒️ #geology
February 5, 2026 at 12:51 PM
Incredible rock! A retrogressed eclogite in which amazing simplectites developed during amphibolite-facies metamorphism. Garnet is surrounded by coronas of plagioclase and hornblende. Omphacite is replaced by diopside + plagioclase simplectites. ❤️
⚒️ #geology
⚒️ #geology
Contact between fibrolite nodule (lower right) and biotite paragneiss
February 5, 2026 at 11:41 AM
Contact between fibrolite nodule (lower right) and biotite paragneiss
Asymmetric feldspar porphyroclast
February 5, 2026 at 10:30 AM
Asymmetric feldspar porphyroclast
Today I feel very stressed, but not as much as this ultramylonite from Mt. Grighini, Sardinia
FOV 3 mm. CPL light
#geology #ThinSectionThursday
FOV 3 mm. CPL light
#geology #ThinSectionThursday
February 5, 2026 at 10:17 AM
Today I feel very stressed, but not as much as this ultramylonite from Mt. Grighini, Sardinia
FOV 3 mm. CPL light
#geology #ThinSectionThursday
FOV 3 mm. CPL light
#geology #ThinSectionThursday
Folded migmatites from Crevola, Val Sesia (Italy)
February 4, 2026 at 4:41 PM
Folded migmatites from Crevola, Val Sesia (Italy)
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
Thin Section Thursday!
Ophitic texture of plagioclase laths encased in clinopyroxene in a gabbro from the Glen Mtns. Layered Complex in southwestern Oklahoma. Contributed by Robert Puckett. You can contribute too! Send images to akoziol1 at udayton dot edu. #thinsectionthursday
Ophitic texture of plagioclase laths encased in clinopyroxene in a gabbro from the Glen Mtns. Layered Complex in southwestern Oklahoma. Contributed by Robert Puckett. You can contribute too! Send images to akoziol1 at udayton dot edu. #thinsectionthursday
November 27, 2025 at 1:32 PM
Thin Section Thursday!
Ophitic texture of plagioclase laths encased in clinopyroxene in a gabbro from the Glen Mtns. Layered Complex in southwestern Oklahoma. Contributed by Robert Puckett. You can contribute too! Send images to akoziol1 at udayton dot edu. #thinsectionthursday
Ophitic texture of plagioclase laths encased in clinopyroxene in a gabbro from the Glen Mtns. Layered Complex in southwestern Oklahoma. Contributed by Robert Puckett. You can contribute too! Send images to akoziol1 at udayton dot edu. #thinsectionthursday
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
Pyrope and minor kyanite in matrix of phengite and palisade-textured quartz from the Dora Maira massif, N. Italy. Section is slightly above standard thickness.
#thinsectionthursday
#thinsectionthursday
January 22, 2026 at 7:30 PM
Pyrope and minor kyanite in matrix of phengite and palisade-textured quartz from the Dora Maira massif, N. Italy. Section is slightly above standard thickness.
#thinsectionthursday
#thinsectionthursday
Reposted by Samuele Papeschi サムエレ パペスキ | Geology is the way ⚒️🧪
I've seen fossils in some remarkable places, but this takes the prize: the benthic foram Nummulites in the base of the Great Pyramid of Giza. These massive blocks were quarried from the Eocene Mokkatam Formation when a relictual population of woolly mammoths still lived on Wrangel Island.
February 2, 2026 at 5:43 PM
I've seen fossils in some remarkable places, but this takes the prize: the benthic foram Nummulites in the base of the Great Pyramid of Giza. These massive blocks were quarried from the Eocene Mokkatam Formation when a relictual population of woolly mammoths still lived on Wrangel Island.
This is cool. This rock WAS an eclogite and now it is just amphibole and chlorite aggregates, but the opaque minerals still mimic the shape and the internal foliation of grains that do not exist anymore. 4th photo is all that's left of the original assemblage: some omphacite relics inside amphibole
February 3, 2026 at 1:37 PM
This is cool. This rock WAS an eclogite and now it is just amphibole and chlorite aggregates, but the opaque minerals still mimic the shape and the internal foliation of grains that do not exist anymore. 4th photo is all that's left of the original assemblage: some omphacite relics inside amphibole
Chopsticks
February 3, 2026 at 12:49 PM
Chopsticks
Sometimes even the most 'static' rocks show evidence of deformation. This prismatic amphibole crystal is slightly bent and crosscut by a series of cracks that appear related to the bending
⚒️ #geology #amphibole #structuralgeology
⚒️ #geology #amphibole #structuralgeology
February 3, 2026 at 12:42 PM
Sometimes even the most 'static' rocks show evidence of deformation. This prismatic amphibole crystal is slightly bent and crosscut by a series of cracks that appear related to the bending
⚒️ #geology #amphibole #structuralgeology
⚒️ #geology #amphibole #structuralgeology
X marks the spot
February 3, 2026 at 12:37 PM
X marks the spot