English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Upper Silurian rocks outcrop in a relatively narrow belt centered on Lake Aylmer in the Eastern Townships of southern Quebec. Two distinct lithotectonic units form this belt. The Lac Aylmer Formation is a 1200 m-thick autochthonous unit, lying with disconformity over-the Middle-Upper Ordovician Magog Group. The Lac Lambton Formation is a 1100 m-thick unit unconformably overlying the Middle Ordovician or older Ascot Complex. The Lac Lambton Formation is part of an allochthonous succession, transported northwestward during the Acadian orogeny along the La Guadeloupe fault. The Lac Aylmer Formation comprises a lower conglomeratic member, a middle sandstone/siltstone member and an upper mixed fine-grained, siliciclastic carbonate member with local reefoid limestone masses. The Lac Lambton Formation is divided into eight informal members, collectively comprising conglomerates, carbonates and fine-grained siliciclastics. The upper parts of both formations have yielded Pridolian (Late Silurian) brachiopods. Field and petrographic studies of the various conglomerates have shown that they share a clast source (the Ascot Complex) but were deposited in dissimilar environments. The two formations were part of distinct depositional basins separated by an emergent topographic element, the Ascot Complex. The lack of detailed biostratigraphic data for most parts of the units raises the possibility that the basal disconformity/unconformity could be either Taconic (Late Ordovician) or Salinie (Late Silurian).   RESUME  Les roches du Silurien superieur affleurent le long d'une bande relativement mince centred sur le lac Aylmer en Estrie, dans le sud du Quebec. Deux unites lithotectoniques distinctes forment cette bande. La Formation du Lac Aymer est une unite autochtone de 1200 m d'epaisseur reposant en inconformite sur le Groupe de Magog, d'ege Ordovicien moyen a superieur. La Formation du Lac Lambton est une unite de 1100 m d'epaisseur qui recouvre en discordance ce le Group d'Ascot, d'ege Ordovicien moyen ou plus ancie. La Formation du Lac Lambton fait partie d'une succession allochtone, transportee vers le nord-ouest durant l'orogenese acadienne le long de la faille de la Guadeloupe. La Formation du Lac Aylmer comprend un membre conglomeratique inferieur, un membre intermediate de gres -siltstone et un membre superieur melange de carbonates et de silicoclastites a grain fin avec localement des masses de calcaires d'allure recifale. La Formation du Lac Lambton est divisee en huit membres informels, comprenant des conglomerate, des carbonates et des silicoclastites a grain fin. Les parties superieures des deux formations contiennent des brachiopodes pridoliens (Silurien tardif). Les eludes de terrain et petrographiques des divers conglomerate ont montre qu'ils partagent une source de clastes (le Complexe d' Ascot) mats furent deposes dans des milieux differents. Les deux formations faisaient partie de bassins de deposition distincts separes par un element topographique emergent, le Complexe d'Ascot. Le manque de donnees biostratigraphiques detainees pour la plupart des unites laisse ouverte la possibilite que disconformite/discordance de base so it taconique (Ordovicien superieur) ou Salinique (Silurien superieur).  [Traduit par le journal]

atlantic geology

Stratigraphy, paleoenvironmental evolution and regional significance of the Silurian Lake Aylmer-Lake Saint-François belt, Eastern Townships, Qu&amp;#xE9;bc