#fridayfold — Public Fediverse posts

Anticline in the Paleoproterozoic Thomson Formation, near Jay Cooke State Park, Northeast #Minnesota. Deformation due to the Penokean Orogeny, ca 1850–1900 Ma. This is a favorite fieldtrip stop; included in the GSA Centennial Guidebook. An October picture from the archives. #geology #FridayFold 🧪⚒️

Anticline in the Paleoproterozoic Thomson Formation, near Jay Cooke State Park, Northeast #Minnesota. Deformation due to the
Penokean Orogeny, ca 1850–1900 Ma. This is a favorite fieldtrip stop; included in the GSA Centennial Guidebook. An October picture from the archives. #geology #FridayFold 🧪⚒️

#FridayFold below the peak of Schilthorn mountain, Switzerland. #FoldFriday #Geology

What day is today...? Time for #FridayFold In #Asturias (NW Spain), once part of the mighty Variscan orogen. A nice example of tightly folded Devonian turbiditic deposits. Cap lens for scale. Medium size geologist for scale. #geology #structuralgeology #science ⚒️🧪

#FridayFold This is a fold in Carboniferous rocks at the Pastoratsberg in Essen, Germany. If you're lucky, it's not hidden by parked cars or overgrown in summer. ⚒️🧪

For #FridayFold : twisted flysch by the islet bridge, from our recent visit to #Gaztelugatxe

#FoldFriday

A #FridayFold from the west coast of the #IsleofLewis.

The dark mafic #OuterHebrides dykes were intruded into the #Lewisian gneiss. The original cross cutting relationship has been brought into near concordance during subsequent #Laxfordian deformation which also generated these folds.

A #FridayFold from the west coast of the #IsleofLewis.

The dark mafic #OuterHebrides dykes were intruded into the #Lewisian gneiss. The original cross cutting relationship has been brought into near concordance during subsequent #Laxfordian deformation which also generated these folds.

A #FridayFold from the west coast of the #IsleofLewis.

The dark mafic #OuterHebrides dykes were intruded into the #Lewisian gneiss. The original cross cutting relationship has been brought into near concordance during subsequent #Laxfordian deformation which also generated these folds.

A #FridayFold from the west coast of the #IsleofLewis.

The dark mafic #OuterHebrides dykes were intruded into the #Lewisian gneiss. The original cross cutting relationship has been brought into near concordance during subsequent #Laxfordian deformation which also generated these folds.

A #FridayFold from the west coast of the #IsleofLewis.

The dark mafic #OuterHebrides dykes were intruded into the #Lewisian gneiss. The original cross cutting relationship has been brought into near concordance during subsequent #Laxfordian deformation which also generated these folds.

#FridayFold in #Archaean amphibolites seen on the west coast of the #IsleofLewis.

#FridayFold in #Archaean amphibolites seen on the west coast of the #IsleofLewis.

#FridayFold in #Archaean amphibolites seen on the west coast of the #IsleofLewis.

#FridayFold in #Archaean amphibolites seen on the west coast of the #IsleofLewis.

#FridayFold seen in a new road cutting near Stornoway.

#Archaean Lewisian gneiss is cut by mafic #OuterHebrides dyke. Both are then folded during the #Laxfordian.

Cross cutting of the gneissic foliation can be seen in the core of the fold, whilst the limbs are concordant.

#FridayFold seen in a new road cutting near Stornoway.

#Archaean Lewisian gneiss is cut by mafic #OuterHebrides dyke. Both are then folded during the #Laxfordian.

Cross cutting of the gneissic foliation can be seen in the core of the fold, whilst the limbs are concordant.

#FridayFold seen in a new road cutting near Stornoway.

#Archaean Lewisian gneiss is cut by mafic #OuterHebrides dyke. Both are then folded during the #Laxfordian.

Cross cutting of the gneissic foliation can be seen in the core of the fold, whilst the limbs are concordant.

#FridayFold seen in a new road cutting near Stornoway.

#Archaean Lewisian gneiss is cut by mafic #OuterHebrides dyke. Both are then folded during the #Laxfordian.

Cross cutting of the gneissic foliation can be seen in the core of the fold, whilst the limbs are concordant.

#FridayFold seen in a new road cutting near Stornoway.

#Archaean Lewisian gneiss is cut by mafic #OuterHebrides dyke. Both are then folded during the #Laxfordian.

Cross cutting of the gneissic foliation can be seen in the core of the fold, whilst the limbs are concordant.

View from the south to the Vercors plateau, Drôme, France. In the middle ground you can see the curved 'barre tithonique' (solid limestone of Upper Jurassic age). Behind that is the Lower Cretaceous limestone of the Glandasse (2041 m), which forms the edge of the Vercors plateau. #geology #fridayfold #foldfriday #france #alps

Tight to isoclinal #FridayFold in an Archaean layered intrusion at Cnoca Breac, on the west coast of South Uist.
Considered to be some of the oldest rocks in the Outer Hebrides at > 2900 Ma the compositional layering is still distinguishable despite strong Laxfordian reworking

#FridayFold in mylonitic Lewisian gneiss.

North-west coast of the #IsleofLewis

#FridayFold - #Lewisian gneiss on approach to the causeway from South Uist to Eriskay in the #OuterHebrides

Another hard day in the office😎 looking for a #FridayFold

The #Lewisian gneisses on the beach at Port Nis (Port of Ness) have been folded during the #Laxfordian.
#IsleofLewis

Another hard day in the office😎 looking for a #FridayFold

The #Lewisian gneisses on the beach at Port Nis (Port of Ness) have been folded during the #Laxfordian.
#IsleofLewis

Another hard day in the office😎 looking for a #FridayFold

The #Lewisian gneisses on the beach at Port Nis (Port of Ness) have been folded during the #Laxfordian.
#IsleofLewis

Another hard day in the office😎 looking for a #FridayFold

The #Lewisian gneisses on the beach at Port Nis (Port of Ness) have been folded during the #Laxfordian.
#IsleofLewis

Good morning. It's Friday. No, sorry... it's #FridayFold. Enjoy the superb anticlines and synclines in Baluchistan, Pakistan.

Infrared false-colour composite (looks predominantly red) over the Khude Range Fold Belt, Khuzdar Knot and Kirthar Range Fold Belt in #Pakistan.

Images processed in EO Browser, courtesy of Sentinel Hub. Contains Copernicus Sentine-2 data

#geology #remotesensing #earthobservation #sentinel2 #structuralgeology #Khude #Kirthar #Khuzdar

Good morning. It's Friday. No, sorry... it's #FridayFold. Enjoy the superb anticlines and synclines in Baluchistan, Pakistan.

Infrared false-colour composite (looks predominantly red) over the Khude Range Fold Belt, Khuzdar Knot and Kirthar Range Fold Belt in #Pakistan.

Images processed in EO Browser, courtesy of Sentinel Hub. Contains Copernicus Sentine-2 data

#geology #remotesensing #earthobservation #sentinel2 #structuralgeology #Khude #Kirthar #Khuzdar

Good morning. It's Friday. No, sorry... it's #FridayFold. Enjoy the superb anticlines and synclines in Baluchistan, Pakistan.

Infrared false-colour composite (looks predominantly red) over the Khude Range Fold Belt, Khuzdar Knot and Kirthar Range Fold Belt in #Pakistan.

Images processed in EO Browser, courtesy of Sentinel Hub. Contains Copernicus Sentine-2 data

#geology #remotesensing #earthobservation #sentinel2 #structuralgeology #Khude #Kirthar #Khuzdar

Good morning. It's Friday. No, sorry... it's #FridayFold. Enjoy the superb anticlines and synclines in Baluchistan, Pakistan.

Infrared false-colour composite (looks predominantly red) over the Khude Range Fold Belt, Khuzdar Knot and Kirthar Range Fold Belt in #Pakistan.

Images processed in EO Browser, courtesy of Sentinel Hub. Contains Copernicus Sentine-2 data

#geology #remotesensing #earthobservation #sentinel2 #structuralgeology #Khude #Kirthar #Khuzdar

Good morning. It's Friday. No, sorry... it's #FridayFold. Enjoy the superb anticlines and synclines in Baluchistan, Pakistan.

Infrared false-colour composite (looks predominantly red) over the Khude Range Fold Belt, Khuzdar Knot and Kirthar Range Fold Belt in #Pakistan.

Images processed in EO Browser, courtesy of Sentinel Hub. Contains Copernicus Sentine-2 data

#geology #remotesensing #earthobservation #sentinel2 #structuralgeology #Khude #Kirthar #Khuzdar

Leopoldshörnle near the Grosser Widderstein in the Austrian Alps consists of folded Triassic Dolomites of the Austroalpine nappes. #fridayfold #foldfriday #geology #rocks #austria #alps #mountains #kleinwalsertal #lechtal #geologie

The San Andreas fault is where two tectonic plates meet, and as an iconic Californian feature, should be easy to see and it is in places - but not like this. Along the Highway 14 freeway from Los Angeles, just north of the junction with Avenue S, the fault in all its glory is revealed in the famous Palmdale road cut. Here, millions of years-old lakebed sediments are crumpled and folded almost like a Van Gogh painting. The curl of the browns and tans of the 90 foot exposure catch every eye, and even the uninitiated know they have seen the might of the earth exposed. For better pictures and a tour of the fault, see: https://v-e-n-u-e.com/The-Great-Wave-A-Visit-to-the-San-Andreas-Fault

#FridayFold #FridayFault #PalmdaleRoadCut #Geology

The San Andreas fault is where two tectonic plates meet, and as an iconic Californian feature, should be easy to see and it is in places - but not like this. Along the Highway 14 freeway from Los Angeles, just north of the junction with Avenue S, the fault in all its glory is revealed in the famous Palmdale road cut. Here, millions of years-old lakebed sediments are crumpled and folded almost like a Van Gogh painting. The curl of the browns and tans of the 90 foot exposure catch every eye, and even the uninitiated know they have seen the might of the earth exposed. For better pictures and a tour of the fault, see: https://v-e-n-u-e.com/The-Great-Wave-A-Visit-to-the-San-Andreas-Fault

#FridayFold #FridayFault #PalmdaleRoadCut #Geology

The San Andreas fault is where two tectonic plates meet, and as an iconic Californian feature, should be easy to see and it is in places - but not like this. Along the Highway 14 freeway from Los Angeles, just north of the junction with Avenue S, the fault in all its glory is revealed in the famous Palmdale road cut. Here, millions of years-old lakebed sediments are crumpled and folded almost like a Van Gogh painting. The curl of the browns and tans of the 90 foot exposure catch every eye, and even the uninitiated know they have seen the might of the earth exposed. For better pictures and a tour of the fault, see: https://v-e-n-u-e.com/The-Great-Wave-A-Visit-to-the-San-Andreas-Fault

#FridayFold #FridayFault #PalmdaleRoadCut #Geology

The San Andreas fault is where two tectonic plates meet, and as an iconic Californian feature, should be easy to see and it is in places - but not like this. Along the Highway 14 freeway from Los Angeles, just north of the junction with Avenue S, the fault in all its glory is revealed in the famous Palmdale road cut. Here, millions of years-old lakebed sediments are crumpled and folded almost like a Van Gogh painting. The curl of the browns and tans of the 90 foot exposure catch every eye, and even the uninitiated know they have seen the might of the earth exposed. For better pictures and a tour of the fault, see: https://v-e-n-u-e.com/The-Great-Wave-A-Visit-to-the-San-Andreas-Fault

#FridayFold #FridayFault #PalmdaleRoadCut #Geology

The San Andreas fault is where two tectonic plates meet, and as an iconic Californian feature, should be easy to see and it is in places - but not like this. Along the Highway 14 freeway from Los Angeles, just north of the junction with Avenue S, the fault in all its glory is revealed in the famous Palmdale road cut. Here, millions of years-old lakebed sediments are crumpled and folded almost like a Van Gogh painting. The curl of the browns and tans of the 90 foot exposure catch every eye, and even the uninitiated know they have seen the might of the earth exposed. For better pictures and a tour of the fault, see: https://v-e-n-u-e.com/The-Great-Wave-A-Visit-to-the-San-Andreas-Fault

#FridayFold #FridayFault #PalmdaleRoadCut #Geology

@MarkIngs There are some geologists who use #FoldFriday and/or #FridayFold.

The river Durance cuts beautifully through the 'barre tithonique' (hard calcareous rocks, Upper Jurassic age) in Sisteron, France. #fridayfold #foldfriday #geology #rocks #france #alps #mountains

Folded Carboniferous shales and sandstones at Hartland Quay, Devon, England. #fridayfold #foldfriday #mountains #rock #coast #devon #england #unitedkingdom #carboniferous #hartland #geology

Fold Friday

Anton van Tetering @studiohaverstraat reminded me it’s #FoldFriday (or #FridayFold), my favorite day. Here’s a lovely recumbant fold in this island from Greenland. Below is a link to lots of lovely info on folded rock!

https://www.geologypage.com/2015/12/geological-folds.html

#FoldFriday #RecumbantFold #Greenland #geology

Upper-Jurassic folded sedimentary rocks near Seyne-les-Alpes, France. #fridayfold #foldfriday #mountains #rock

I just learned about the geology hashtags #FridayFold and/or #FoldFriday and am pretty excited for another day of themed image posts. Looks like there's only a few people using them so far but hoping they will grow. :)