Results 31 to 40 of about 953 (179)

Precocious maturation and smoltification in wild Atlantic salmon in the Armorican massif, France [PDF]

open access: yesAquaculture, 1985
In wild Atlantic salmon, Salmo salar, of Armorican rivers, precocious maturity occurred at
Baglinière, Jean-Luc, Maisse, Gérard
openaire   +4 more sources

Villa d’époque romaine et habitat médiéval à Mont-Saint-Jean (Sarthe) : bilan des recherches 2008-2020

open access: yesGallia, 2022
The study of an ancient iron and steel production area located in the eastern part of the Sillé-le-Guillaume state forest (Sarthe) led to a renewal of research into the nearest rural settlement dated to the Roman period and situated between the ...
Florian Sarreste   +13 more
doaj   +1 more source

Provenance of Ediacaran-Ordovician sediments of the Medio Armorican Domain, Brittany, West France: Constraints from U/Pb detrital zircon and Sm Nd isotope data [PDF]

open access: yes, 2021
International audienceThe temporal evolution of the sedimentary source areas of the Armorican Massif, involving Ediacaran to Upper Ordovician strata, is investigated to gain insight into the palaeogeographic affinities and changes that occurred as a ...
Dabard, Marie Pierre   +8 more
core   +1 more source

A Sb ± Au mineralizing peak at 360 Ma in the Variscan belt

open access: yesBSGF - Earth Sciences Bulletin, 2019
40Ar/39Ar absolute dating on tobelite (an ammonium-rich white mica) has been performed in order to provide geochronological constraints on the Sb ± Au mineralization and hydrothermalism at the Saint-Aubin-des-Châteaux base metal-Sb ± Au occurrence ...
Pochon Anthony   +10 more
doaj   +1 more source

Characterisation of chemically related asbestos amphiboles of actinolite: proposal for a specific differentiation in the diagram (Si apfu versus Mg/Mg+Fe2+)

open access: yesInternational Journal of Metrology and Quality Engineering, 2018
Aggregates and rocks from quarries located in metropolitan France and New Caledonia, all likely to contain asbestiform amphiboles, were analysed by a routine laboratory (AD-LAB). Morphological observations were made using transmission electron microscopy
Misseri Maxime, Lahondere Didier
doaj   +1 more source

A database of pumping tests in crystalline rocks: Lithostratigraphic controls on transmissivity and its log-normal distribution (Armorican Massif, France)

open access: yesJournal of Hydrology: Regional Studies
Study region: Armorican Massif, Brittany, France Study focus: This study compiled a comprehensive database from 485 pumping tests performed in crystalline aquifers within a single region (Brittany, France; 27,209 km²).
Alexandre Boisson   +11 more
doaj   +1 more source

Early Bronze Age Copper Circulation in the Guadalentín and Segura Valleys (SE Spain)

open access: yesArchaeometry, EarlyView.
ABSTRACT Identifying the sources of copper used in Early Bronze Age metalwork from south‐east Spain is key to resolving a long‐running debate concerning centralized control, or lack thereof, over El Argar society's economic organisation. This study provides the first substantial integrated programme of EDXRF and MC‐ICP‐MS analyses for copper‐base ...
Dirk Brandherm, Ignacio Montero‐Ruiz
wiley   +1 more source

Laurasian Seaway History During the Early Jurassic From Quantitative Mineralogy and Detrital Zircon Dating

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract The Laurasian Seaway comprises a N‐S oriented trans‐Pangaean corridor linking Tethys to the Boreal Sea during the Jurassic, and direction of water flow has been the subject of considerable debate. The Llanbedr (Mochras Farm) borehole, Cardigan Bay Basin, Wales, is a uniquely informative record that comprises an expanded deep‐marine silty ...
M. Jiang   +7 more
wiley   +1 more source

Palaeomagnetism of late Precambrian-Cambrian volcanics and intrusives from the Armorican Massif, France [PDF]

open access: yesGeophysical Journal International, 1983
Samples of the keratophyre tuffs of Tréguier (640 ± 12 Myr) of the Upper Brioverian series, and the microgranite dykes of Loguivy (548 ± 24 Myr) have been collected from the north coast of Brittany, France. The samples were progressively demagnetized with AF and, predominantly, thermal methods.
Perigo, Russell   +3 more
openaire   +1 more source

Evolving late Triassic–Jurassic environments of western Europe: the Schwäbisch Gmünd geological path in southwest Germany compared to the ‘Jurassic Coast’ of Dorset, southern England

open access: yesGeology Today, Volume 42, Issue 3, Page 134-146, May/June 2026.
The geology of southwest Germany is dominated by continental to marine sedimentary rocks deposited within Mesozoic sedimentary basins which have yielded economic hydrocarbon deposits. This stratigraphy has formed the focus of geological and stratigraphical research for centuries, with world‐famous exposures becoming type sections and lending their name
Benedikt M. Steiner, James S.K. Barnet
wiley   +1 more source

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