Thomas Holtz · @Arctomet
726 followers · 775 posts · Server sciencemastodon.com


Raymond R. Rogers, David A. Eberth & Jahandar Ramezani (2023)
The “Judith River−Belly River problem” revisited (Montana-Alberta-Saskatchewan): New perspectives on the correlation of Campanian dinosaur-bearing strata based on a revised stratigraphic model updated with CA-ID-TIMS U-Pb geochronology
GSA Bulletin (advance online publication)
doi: doi.org/10.1130/B36999.1

#newpaper #paleontology #stratigraphy #dinosaurs #correlation

Last updated 2 years ago

Magpieblog · @sarahc
1352 followers · 6852 posts · Server mas.to

"Idealer Schnitt durch die Erdrinde (Ideal cut through the earth's crust)"

Wood engraving printed in color c. 1900.

#historyofscience #scientificillustration #volcanoes #stratigraphy #geology

Last updated 2 years ago

Thomas Holtz · @Arctomet
692 followers · 729 posts · Server sciencemastodon.com

David Anthony Eberth, David C. Evans, Jahandar Ramezani, Sandra L. Kamo, Caleb Marshall Brown, Philip J. Currie, and Dennis R. Braman (2023)
Calibrating geologic strata, dinosaurs, and other fossils at Dinosaur Provincial Park (Alberta, Canada) using a new CA-ID-TIMS U–Pb geochronology
Canadian Journal of Earth Sciences (advance online publication)
doi: doi.org/10.1139/cjes-2023-0037
cdnsciencepub.com/doi/abs/10.1

#newpaper #paleontology #dinosaurs #stratigraphy

Last updated 2 years ago

New publication: "Measuring and evaluating colorimetric properties of samples from loess-paleosol sequences" doi.org/10.1016/j.mex.2023.102

#openaccess #geoscience #climatology #geomorphology #stratigraphy #geography

Last updated 2 years ago

Kau))) · @kau
231 followers · 151 posts · Server qoto.org

Cool new out by Chris Lowery and colleagues where they use to understand deposits associated with the in the : eartharxiv.org/repository/view

#preprint #seismic #stratigraphy #contourite #LoopCurrent #gulfofmexico

Last updated 2 years ago

Jorge 🇪🇺 🌍🛰️ · @lithospheric
992 followers · 1414 posts · Server mastodon.xyz

You may be surprised, but the International Chronostratigraphic Chart (a.k.a. "the geological time scale") is often and regularly updated by the International Commission on Stratigraphy. They do it 2-4 times a year!

Last version is April 2023.

stratigraphy.org/chart#latest-

#geology #stratigraphy #science

Last updated 2 years ago

Thomas Holtz · @Arctomet
663 followers · 637 posts · Server sciencemastodon.com

Myu Tanabe, Kazumasa Aoki, Kentaro Chiba, Mototaka Saneyoshi, Shota Kodaira, Hirotsugu Nishido, Buuvei Mainbayar, Khishigjav Tsogtbaatar & Shinobu Ishigaki (2023)
Apatite U–Pb dating of dinosaur teeth from the Upper Cretaceous Nemegt Formation in the Gobi Desert, Mongolia: Contribution to depositional age constraints
Island Arc 32(1): e12488
doi: doi.org/10.1111/iar.12488
onlinelibrary.wiley.com/doi/10

#newpaper #stratigraphy #cretaceous #mongolia

Last updated 2 years ago

sapiens · @sapiens
13 followers · 50 posts · Server universeodon.com

Fossil: Pentacrinus penichensis, a crinoid whose stems are pentagonal (star-shaped) in cross-section. In terms of stratigraphy, they are found at the lower Jurassic (Toarcian) - about 183 to 174My old. This picture was taken in West Portugal (Peniche).

#pentacrinus #jurassic #toarcian #cronoids #fossil #paleontology #stratigraphy

Last updated 2 years ago

BrownsBay · @brownsbay
129 followers · 250 posts · Server pnw.zone

More geology from my walk along the bluffs at Barnum Point on Camano Island. Classic glacial sequence in this region displayed in the bluff with advance outwash sand mantled by till from the ice sheet advance of the Vashon stade, i.e. the Puget Lobe. Outwash dated to estimated 18 to 20 ka. Till from about 18 ka to about 13.5 ka. Ref. Geologic map of the Juniper Beach 7.5-minute quadrangle, WDGER Geologic Map GM70.

#geology #pleistocene #iceage #stratigraphy #till #glacier #glaciation #pnw #wa

Last updated 2 years ago

Thomas Holtz · @Arctomet
643 followers · 483 posts · Server sciencemastodon.com

John I. Ejembi, Sally L. Potter-McIntyre, Anna Paltseva & Eric C. Ferré (2023)
New palaeoclimatic constraints from paleosols on the Middle-Late Jurassic landscape, Western Colorado, U.S.A.
International Geology Review (advance online publication)
doi: doi.org/10.1080/00206814.2023.
tandfonline.com/doi/full/10.10

#newpaper #paleoclimatology #stratigraphy

Last updated 2 years ago

tomsharp · @tomsharp
49 followers · 97 posts · Server mastodon.sdf.org

In 1669, Nicolas Steno laid out the fundamentals of stratigraphy, how sedimentary rocks are formed, to explain the similarity of shark teeth to fossil glossopetrae. (sharpgiving.com/thebookofscien)

#poetry #science #history #stratigraphy #steno

Last updated 2 years ago

GregCocks · @GregCocks
167 followers · 188 posts · Server techhub.social
GregCocks · @GregCocks
155 followers · 176 posts · Server techhub.social
soil enjoyer · @mae
37 followers · 68 posts · Server not-ok.computer

Last weekend I visited the Sloan Gorge Preserve in Woodstock, NY to see the Catskill Delta Complex

pretty for and fans of

#devonian #outcrops #mosstodon #sedimentology #stratigraphy #geomorphology

Last updated 3 years ago

Starran · @starran
31 followers · 194 posts · Server socel.net

Islay metamorphic rocks

#geology #stratigraphy

Last updated 3 years ago

Rich Stein · @RichStein
104 followers · 411 posts · Server econtwitter.net

@NatureMC Complete information on the 1) "Working Group on the 'Anthropocene'" of the Subcommission on Quaternary Stratigraphy: quaternary.stratigraphy.org/wo

2) This matrix illustration is from the most recent newsletter of the Anthropocene Working Group (February 2022; quaternary.stratigraphy.org/wp). As you can see, there are 12 sites being explored. All criteria are also listed.

#anthropocene #stratigraphy

Last updated 3 years ago

Cody Mason, Ph.D · @CosyNomad
67 followers · 23 posts · Server ohai.social

Field photos from *the outcrop of Bullhead Alluvium, displaying complex vertical and lateral changes in grain size related to paleohydraulics in the Pliocene Colorado River. Sediment lithologies indicate interaction between local sources and the main trunk Colorado in the Pliocene. Abundant, well rounded quartzite cobbles probably come from the Grand Canyon area, and angular granitic/mm lithologies likely from local drainages.


#sediment #stratigraphy #geology #earthscience

Last updated 3 years ago

Matt Brueseke · @MattTG
75 followers · 21 posts · Server mastodon.social
Thomas Holtz · @Arctomet
432 followers · 96 posts · Server sciencemastodon.com
Thomas Holtz · @Arctomet
430 followers · 90 posts · Server sciencemastodon.com

Yo, K., Hoffman, E., O'Leary, M., & Novacek, M. (2022). A new Early Paleogene fossil mammal locality in the central-eastern Nemegt Basin, Gobi Desert, Mongolia, and notes on mammalian biostratigraphy. Journal of Paleontology, 1-24. doi:10.1017/jpa.2022.85

#newpaper #paleontology #stratigraphy

Last updated 3 years ago