Khurram Wadee ✅ · @mkwadee
1489 followers · 14455 posts · Server mastodon.org.uk
The #erosion of #rocks around #Pontneddfechan shows #sedimentary #layers as well as fracturing by hydraulic action.
Here, for example, is an exposed cliff with jagged, cuboid forms left my the erosion process. It reminds me of the #VideoGame #Qbert.
#MyWork #MyPhoto #CCBYSA #DSLR #Nikon #D7000 #Summer #Wales #BannauBrycheiniog
#erosion #rocks #pontneddfechan #sedimentary #layers #videogame #qbert #mywork #myphoto #ccbysa #dslr #nikon #d7000 #summer #wales #BannauBrycheiniog
berndandeweg · @berndandeweg
182 followers · 1119 posts · Server mastodon.nl
Due to the heavy rains of last weeks, quite some fresh outcrops show nice examples of #sedimentary #geology structures. #fieldwork #Aardwetenschappen @vuamsterdam #Spain.
#spain #aardwetenschappen #fieldwork #geology #sedimentary
Howard Lee · @hlee
89 followers · 194 posts · Server sciencemastodon.com
Early Jurassic desert sand dunes - Navajo Sandstone, Zion National Park #sedimentary #geology #erg #dunes
#sedimentary #geology #erg #dunes
Paleo Priest 🇱🇹🇺🇦 · @paleopriest
68 followers · 194 posts · Server sauropods.win
I am trying to identify fossils in these thin sections of Silurian sedimentary rocks from Lithuania. Any ideas? I am still learning and lacking so much in experience… 🥺
I think I got the Crinoids right and some Bryozoas, but that’s it.
.
Also, next to these there are some nice cathodoluminescence photos of the same thin sections 🤩 You can see growth zones in them!
#paleo #paleontology #geo #geology #thinsections #sedimentary #microscopy #micro #microfossils #fossils #crinoids #bryozoa
#paleo #paleontology #geo #geology #thinsections #sedimentary #microscopy #micro #microfossils #fossils #crinoids #bryozoa
Chris White · @Ceedave
128 followers · 241 posts · Server sciencemastodon.com
Anomalous pebble in layered #sedimentary #rock
An angular pebble is conformably surrounded by argillaceous and sandy layers in this #photograph of the #Neoproterozoic #Squantum Member of the #Roxbury Conglomerate. The wide range of clast sizes led to an interpretation as a #glacial #tillite thru the 1970s, but the Squantum Member is now mostly interpreted as a #debrisFlow (#debrite or #turbidite). My #photo.
#sedimentary #rock #photograph #Neoproterozoic #squantum #roxbury #glacial #tillite #debrisflow #debrite #turbidite #photo #boston #fieldtrip #umassboston
Chris White · @Ceedave
126 followers · 235 posts · Server sciencemastodon.com
Rapid changes in #clast size in #sedimentary #rocks
The #Neoproterozoic #Squantum Member of the #Roxbury Conglomerate (#Boston Bay Group) transitions from sandstone, to almost-clast-supported conglomerate, to laminated argillite…in about 25 cm. Fifty years ago, it was interpreted as a #glacial deposit and called the Squantum #Tillite, presumably associated with the #Gaskiers Glaciation. Paucity of evidence (e.g., few scratches or faceted clasts) suggests a debris flow. My #photo.
#clast #sedimentary #rocks #Neoproterozoic #squantum #roxbury #boston #glacial #tillite #gaskiers #photo
Barry Goldman · @barrygoldman1
128 followers · 2263 posts · Server sauropods.win
What happened to this #shale bed? Notice the flat planes switch orientation 90degrees across the fault. Also maybe some ripple marks to th right.
I will post more in a bit, then there's an (#ordovician?) beach exposed a few yards away, and many other layers of history. Very busy place.
Rt 67 Rensselaer Co. NY state north america
I must go back and investigate further
#shale #Ordovician #sedimentary #geology
Paleo Priest 🇱🇹🇺🇦 · @paleopriest
60 followers · 173 posts · Server sauropods.win
Learning sedimentary rocks and how to analyze their thinsections. Lithuania, Milaičiai ~940 meter depth. Silurian period South Baltic seasedimentary basin, coral reefs.
#microscope #microscopy #silurian #sedimentary #thinsection #fossil #fossils #rock #geo #geology #paleo #paleontology
#microscope #microscopy #silurian #sedimentary #thinsection #fossil #fossils #rock #geo #geology #paleo #paleontology
BrownsBay · @brownsbay
135 followers · 257 posts · Server pnw.zone
Rock on the beach at Barnum Point, Camano Island, WA. Conglomerate with subrounded cherty clasts in a dark matrix. Any sedimentary petrologists? Likely weathered out of till that caps the bluffs or a dropstone from floating ice on marine water incursion during the Everson interstade. Source rock provenance not known. Ref. Geologic map of the Juniper Beach 7.5-minute quadrangle, WDGER Geologic Map GM70. #geology #sedimentary #conglomerate #iceage #glaciation #PNW #washingtonstate #CamanoIsland
#geology #sedimentary #conglomerate #iceage #glaciation #pnw #washingtonstate #camanoisland
Cliff Wade · @cliffwade
509 followers · 1177 posts · Server allthingstech.social
Went outside to clean up around the area where my neighbor tilled the backyard for our upcoming garden and managed to find some actual pieces of coal out there.
First time I've seen coal in the wild since I was about 10 - 12 years old.
Cormacs Coast · @Cormac_McGinley
160 followers · 122 posts · Server mastodon.sdf.org
Fiadh giving some scale to the sedimentary layers of rock beneath the Cliffs of Moher. Each individual layer represents a flood event (possibly a very rainy day) that occurred in what was a huge river delta area 318 million years ago. County Clare, Ireland.
Cormacscoast.com Walking
#wildatlanticway #walkingtours #discoverireland #keepdiscovering #failteireland #cliffsofmoher #burrenandcliffsofmohergeopark #atlanticgeoparks #dogslife #dog #sedimentary #irelandtravel #Ireland
#WildAtlanticWay #walkingtours #DiscoverIreland #KeepDiscovering #failteireland #cliffsofmoher #burrenandcliffsofmohergeopark #atlanticgeoparks #dogslife #dog #sedimentary #irelandtravel #ireland
Chris White · @Ceedave
108 followers · 134 posts · Server sciencemastodon.com@ijustmightbe These are beautiful images with interesting #sedimentary #structure, some possibly from oblique waves and #longshore drift? My appreciation would be even greater if you gave a notion of #scale in your #caption. Thanks for posting.
#sedimentary #structure #longshore #scale #caption
Chris White · @Ceedave
83 followers · 85 posts · Server sciencemastodon.com
#Wapack Range, #Ashburnham, #Massachusetts #USA
#Woodland scene with stone wall on a foggy summer day, between #Watatic Summit (558 m) and Nutting Hill, near the #NewHampshire border.
The range comprises #Silurian to #Devonian #sedimentary rocks from the peri-#Laurentian Central Maine Trough, metamorphosed in #Appalachian #orogenies.
My #photo, #Fujifilm #XH1 16 mm f/1.4 at f/8 and 1/10 s ISO 400, IBIS on
#mountain #NewEngland #forest #stonewall #ferns #fog #landscape #trees #Metamorphic
#wapack #ashburnham #massachusetts #usa #woodland #watatic #newhampshire #silurian #devonian #sedimentary #laurentian #appalachian #orogenies #photo #fujifilm #xh1 #mountain #newengland #forest #stonewall #ferns #fog #landscape #trees #Metamorphic
GregCocks · @GregCocks
89 followers · 98 posts · Server techhub.social
The Eye Of The Sahara - A Geological Mystery Staring Into Space
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https://www.iflscience.com/the-eye-of-the-sahara-a-geological-mystery-staring-into-space-67179 <-- shared article
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https://doi.org/10.1016/j.jafrearsci.2014.04.006 <-- shared paper
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https://doi.org/10.1007/s12517-021-08734-4 <-- shared paper
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#GIS #spatial #mapping #remotesensing #satellite #Landsat #imagery #gischat #EyeOfTheSahara #vulcanism #intrusion #geology #Africa #RichatStructure #research #mauritania #structuralgeology #anticline #folding #sedimentary #igneous #formation #megabreccia #geologicalheritagesites
#gis #spatial #mapping #remotesensing #satellite #landsat #imagery #gischat #eyeofthesahara #vulcanism #intrusion #geology #africa #richatstructure #research #Mauritania #structuralgeology #anticline #folding #sedimentary #igneous #formation #megabreccia #geologicalheritagesites
David Naylor · @D_Naylor
185 followers · 68 posts · Server universeodon.com
Interesting colors and contrast between #sedimentary layers and #igneous intrusions in the Gravel Hills of the #Mojave Desert.
From Tom Dibblee (1968),
https://openlibrary.org/books/OL256760M/Geology_of_the_Fremont_Peak_and_Opal_Mountain_quadrangles_California
the layers are part of the Pickhandle and Barstow formations laid down in the Miocene. The darker purplish rock is an intrusion of #rhyolitic #breccia.
If the rock colors appear familiar you may have seen similar combinations of these formations in the Opal Mountains, Rainbow Basin, and Calico Mountains near Barstow, CA.
#igneous #sedimentary #mojave #rhyolitic #breccia
Cody Mason, Ph.D · @CosyNomad
27 followers · 13 posts · Server ohai.social#introduction time: Hi 👋 I’m Cody Mason, and I have a PhD in Geoscience from Virginia Tech. I’m an Assistant Professor and #sedimentary #geologist at a regional comprehensive University in Georgia (USA), where I teach intro and upper division classes to undergraduates.
I work with sediments that archive histories of climate and tectonics in: the Death Valley area, the Mississippi River-Fan, and the Amazon River-Fan systems, and besides my collaborators I work exclusively with undergraduates!
#introduction #sedimentary #geologist
mariaansine · @mariaansine
301 followers · 91 posts · Server ohai.social
RT @BialikOr@twitter.com
Working on some study in #sedimentology? An exciting #sedimentary record? Want #OpenAccess and #OpenScience? Here is a handy table to help you pick where to submit.
#sedimentology #sedimentary #openaccess #openscience
Cody Mason, Ph.D · @CosyNomad
26 followers · 12 posts · Server ohai.social
Came across this table to help with your next #sedimentary focused publication.
(Credit: found on bird app; Or Bialik???)
ombialik · @ombialik
17 followers · 15 posts · Server mastodon.world
Are you thinking about where to send your papers on some #sedimentary deposits? Here is a handy table to help you make up your mind about which journal to submit to.
#OpenAccess #OpenScience
#sedimentary #openaccess #openscience
ombialik · @ombialik
24 followers · 21 posts · Server mastodon.worldAre you thinking about where to send your papers on some #sedimentary deposits? Here is a handy table to help you make up your mind about which journal to submit to.
#OpenAccess #OpenScience
#sedimentary #openaccess #openscience