Results 41 to 50 of about 9,274 (231)

Palinologia e estratigrafia do PZ superior da ZOM, NW e SW de Portugal [PDF]

open access: yes, 2010
Doutoramento em GeociênciasNeste trabalho descreve-se e interpreta-se a estratigrafia e palinologia de rochas sedimentares e metassedimentos de idade devónica e carbónica aflorantes ao longo da zona de cisalhamento Porto-Tomar, a Sul na Bacia de Santa
Machado, Gil Monteiro Jacinto
core   +1 more source

An Upper Devonian foredeep basin in the Southern Central Iberian Zone (Variscan Iberian Massif): Consequences for Variscan plate dynamics [PDF]

open access: yes
New field research and revision of previous works in the Variscan Iberian Massif unravel the existence of an Upper Devonian foredeep basin in the southern Central Iberian Zone, close to the suture area with the Ossa-Morena Zone.
Martín Parra, Luis Miguel   +6 more
core   +1 more source

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Middle Givetian to late Famennian (Middle to Late Devonian) conodonts from the northern margin of Gondwana (Kerman region, Central Iran) [PDF]

open access: yes, 2020
International audienceThe Givetian to Famennian (Middle-Upper Devonian) Bahram Formation deposits (Bondar and Shahzadeh Mohammad sections) in the Kerman region, Central Iran were sampled for conodonts.
Yazdi, Mehdi   +5 more
core   +3 more sources

From Highlands to Henge: Refining the Provenance and Transport Pathways of Stonehenge's Altar Stone

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The Altar Stone, the 6000 kg central sandstone megalith at Stonehenge in southern England, is suggested to have originated from the Orcadian Basin in northeast Scotland, some 700 km away. However, its source location within this large basin remains unresolved and its mode of transport uncertain.
Anthony J. I. Clarke   +8 more
wiley   +1 more source

Upper Givetian and Frasnian (Middle and Upper Devonian)conodonts from Ampriú (Aragonian Pyrenees, Spain): global correlations and palaeogeographic relations [PDF]

open access: yes
This report describes for the first time a part of the Middle and Upper Devonian conodont sequence of the Sierra Negra Subfacies in the Aragonian Pyrenees (Spain), establishing the basis for further sound correlations both across the distinct Pyrenean ...
Valenzuela Ríos, José Ignacio   +1 more
core   +1 more source

New data about the age of the Dershor Formation (Lower Devonian) on the Chernyshev swell (Timan-Pechora petroleum province) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
Lithological and biostratigraphical studies of the stratotyp section of the Lower Devonian Dershor Formation, represented in outcrops in the north of the Chernyshev swell, have been carried out. In the section of the Dershor Formation, a sequence of five
Sokolova L.V., Nechaev M.S., Kotik I.S.
doaj  

The palynology of the Middle–Upper Devonian (Givetian–Frasnian) in the Łysogóry-Radom and Lublin basins, south-central Poland

open access: yesPalynology, 2022
The Middle and Upper Devonian (Givetian and Frasnian) deposits of the Łysogóry-Radom and Lublin basins (south-central Poland) presented a diversified palynomorph assemblage. Numerous miospore taxa were documented and also contained well-preserved and varied plant remains, scolecodonts, acritarchs, chitinozoans, organic tentaculitoids, and bioclasts of ...
Kondas, Marcelina, Filipiak, Paweł
openaire   +1 more source

Resolving Micrometre‐Scale Zircon Growth in Silicic Systems by 7 μm LA‐MC‐ICP‐MS U‐Pb Dating: Linking Petrology and Geochronology in Silicic Volcanic and Granitic Rocks from Victoria, Australia

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points 7 μm spot‐diameter LA‐MC‐ICP‐MS analyses yield accurate zircon U‐Pb ages. 1013 Ω amplifier resistors improve low‐signal Pb measurements. Saturn correction protocols minimise down‐hole fractionation effects. We present a systematic evaluation of high spatial‐resolution zircon U‐Pb dating using a Thermo Scientific Neoma multi‐collector ICP‐MS ...
Cristiano Lana, John D. Clemens
wiley   +1 more source

Middle and uppermost Famennian (Upper Devonian) bryozoans from southern Belgium [PDF]

open access: yes, 2015
A stenolaemate bryozoan fauna from the Upper Devonian (middle and uppermost Famennian) of the Dinant Synclinorium, southern Belgium, contains seven species (three trepostomes and four cryptostomes).
Poty, E.   +3 more
core  

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