Matches in SemOpenAlex for { <https://semopenalex.org/work/W2147223876> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W2147223876 abstract "Growing evidence is emerging to support the idea that metamorphism, even in a regional context, may be punctuated – or dominated – by relatively short pulses of heating, fluid flow, and/or mineral growth. Here, we describe data from two Barrovian metamorphic terranes which test this idea. In the Barrovian zones of Scotland, garnet Sm/Nd geochronology from the garnet and sillimanite zones yield the same peak metamorphic ages [1] (~465 Ma). The age is similar to the age of crystallization of large igneous bodies in the area. The contemporaneity of peak ages is explained by an efficient, advective component of heating, perhaps mediated by synchronous fluid flow [2]. The duration of this regionwide pulse of peak metamorphism is constrained by new Srin-apatite diffusion modeling. Apatite grains have detrital cores and metamorphic overgrowths and are included within porphyroblasts (e.g. garnet, staurolite). Modeling of intragrain diffusion of Sr constrains the duration of peak metamorphism to <250 kyr for garnet through staurolite zone samples. Garnet multi-component diffusion modeling from the sillimanite zone corroborates this brief pulse duration. The Wepawaug Schist of Connecticut USA, also yields contemporaneous peak-T garnet Sm/Nd ages from different grades across the terrane (~380 Ma). This age matches a population of texturally young zircons associated with igneous intrusions in these rocks. Garnet cores from the kyanite zone, which have growth textures indicative of extremely rapid growth [3], have been dated by Sm/Nd at 388.6 Ma. This age is matched by another population of zircons also associated with igneous intrusions. This earlier prograde growth event may be related to another pulse of metamorphic growth, brought on by magmatic fluid and heat. Brief pulses of metamorphic heating and mineral reactions, perhaps catalyzed by the introduction of fluids, may be superimposed on regional scale conductive heating at tectonic rates. Such short pulses could help explain the discrepancy between rapid lab-based reaction kinetics and much slower time-integrated field-based reaction kinetics [4]." @default.
- W2147223876 created "2016-06-24" @default.
- W2147223876 creator A5067642893 @default.
- W2147223876 creator A5076621150 @default.
- W2147223876 creator A5089331334 @default.
- W2147223876 date "2007-01-01" @default.
- W2147223876 modified "2023-09-22" @default.
- W2147223876 title "Focused pulses of regional metamorphism" @default.
- W2147223876 hasPublicationYear "2007" @default.
- W2147223876 type Work @default.
- W2147223876 sameAs 2147223876 @default.
- W2147223876 citedByCount "0" @default.
- W2147223876 crossrefType "journal-article" @default.
- W2147223876 hasAuthorship W2147223876A5067642893 @default.
- W2147223876 hasAuthorship W2147223876A5076621150 @default.
- W2147223876 hasAuthorship W2147223876A5089331334 @default.
- W2147223876 hasConcept C101139013 @default.
- W2147223876 hasConcept C109007969 @default.
- W2147223876 hasConcept C112764850 @default.
- W2147223876 hasConcept C127313418 @default.
- W2147223876 hasConcept C146588470 @default.
- W2147223876 hasConcept C150999391 @default.
- W2147223876 hasConcept C151730666 @default.
- W2147223876 hasConcept C166591241 @default.
- W2147223876 hasConcept C17409809 @default.
- W2147223876 hasConcept C202539814 @default.
- W2147223876 hasConcept C202746551 @default.
- W2147223876 hasConcept C26687426 @default.
- W2147223876 hasConcept C2777229588 @default.
- W2147223876 hasConcept C2778250313 @default.
- W2147223876 hasConcept C2778849375 @default.
- W2147223876 hasConcept C2779362224 @default.
- W2147223876 hasConcept C2779870107 @default.
- W2147223876 hasConcept C42787717 @default.
- W2147223876 hasConcept C5900021 @default.
- W2147223876 hasConcept C77928131 @default.
- W2147223876 hasConcept C79927612 @default.
- W2147223876 hasConceptScore W2147223876C101139013 @default.
- W2147223876 hasConceptScore W2147223876C109007969 @default.
- W2147223876 hasConceptScore W2147223876C112764850 @default.
- W2147223876 hasConceptScore W2147223876C127313418 @default.
- W2147223876 hasConceptScore W2147223876C146588470 @default.
- W2147223876 hasConceptScore W2147223876C150999391 @default.
- W2147223876 hasConceptScore W2147223876C151730666 @default.
- W2147223876 hasConceptScore W2147223876C166591241 @default.
- W2147223876 hasConceptScore W2147223876C17409809 @default.
- W2147223876 hasConceptScore W2147223876C202539814 @default.
- W2147223876 hasConceptScore W2147223876C202746551 @default.
- W2147223876 hasConceptScore W2147223876C26687426 @default.
- W2147223876 hasConceptScore W2147223876C2777229588 @default.
- W2147223876 hasConceptScore W2147223876C2778250313 @default.
- W2147223876 hasConceptScore W2147223876C2778849375 @default.
- W2147223876 hasConceptScore W2147223876C2779362224 @default.
- W2147223876 hasConceptScore W2147223876C2779870107 @default.
- W2147223876 hasConceptScore W2147223876C42787717 @default.
- W2147223876 hasConceptScore W2147223876C5900021 @default.
- W2147223876 hasConceptScore W2147223876C77928131 @default.
- W2147223876 hasConceptScore W2147223876C79927612 @default.
- W2147223876 hasLocation W21472238761 @default.
- W2147223876 hasOpenAccess W2147223876 @default.
- W2147223876 hasPrimaryLocation W21472238761 @default.
- W2147223876 hasRelatedWork W1422451825 @default.
- W2147223876 hasRelatedWork W1977650885 @default.
- W2147223876 hasRelatedWork W1996924303 @default.
- W2147223876 hasRelatedWork W2055626179 @default.
- W2147223876 hasRelatedWork W2056010552 @default.
- W2147223876 hasRelatedWork W2102417966 @default.
- W2147223876 hasRelatedWork W2165032088 @default.
- W2147223876 hasRelatedWork W2189497334 @default.
- W2147223876 hasRelatedWork W2202131411 @default.
- W2147223876 hasRelatedWork W2320031802 @default.
- W2147223876 hasRelatedWork W2477964050 @default.
- W2147223876 hasRelatedWork W2732401215 @default.
- W2147223876 hasRelatedWork W2912048452 @default.
- W2147223876 hasRelatedWork W2914326798 @default.
- W2147223876 hasRelatedWork W2969561944 @default.
- W2147223876 hasRelatedWork W2981756090 @default.
- W2147223876 hasRelatedWork W3030484110 @default.
- W2147223876 hasRelatedWork W3151602894 @default.
- W2147223876 hasRelatedWork W3157294220 @default.
- W2147223876 hasRelatedWork W3166998884 @default.
- W2147223876 hasVolume "71" @default.
- W2147223876 isParatext "false" @default.
- W2147223876 isRetracted "false" @default.
- W2147223876 magId "2147223876" @default.
- W2147223876 workType "article" @default.