Taconic orogeny

E87792

The Taconic orogeny was an early Paleozoic mountain-building event along the eastern margin of ancient North America that contributed significantly to the formation of the Appalachian Mountains.

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All labels observed (6)

Statements (48)

Predicate Object
instanceOf geological event
mountain-building event
orogeny
affects Appalachian Basin
New England
New York
island of Newfoundland
surface form: Newfoundland

Pennsylvania
Quebec, Canada
surface form: Quebec
associatedWith Blountian tectophase
Taconic volcanic arc
closure of the Iapetus Ocean
causedBy collision of island arcs with Laurentia
subduction of the Iapetus Ocean plate beneath Laurentia
continentInvolved Laurentia
surface form: Laurentia (ancient North America)
contributedTo formation of the Appalachian Mountains
endTime Early Silurian
around 440 million years ago
follows early rifting of the Iapetus Ocean
geologicalAge Early Paleozoic
locatedIn Laurentia
eastern margin of ancient North America
present-day Appalachian region
namedAfter Taconic Mountains
partOf Appalachian orogeny
peakActivity Middle to Late Ordovician
period Ordovician
precedes Acadian orogeny
produced Taconic orogeny self-linksurface differs
surface form: Taconic clastic wedge

flysch deposits
fold-and-thrust belts
foreland basin subsidence
magmatic arcs
molasse deposits
regional metamorphism
thick clastic wedge deposits
recordedIn Ordovician sedimentary rocks of the Appalachian Basin
metamorphic rocks of New England
structural fabrics of the Appalachian fold-and-thrust belt
resultedIn angular unconformities in the Appalachian region
crustal thickening along eastern Laurentia
development of an accretionary prism
emplacement of ophiolites
uplift of the proto-Appalachian Mountains
significance major early Paleozoic orogenic phase of the Appalachian Mountains
startTime Late Cambrian
around 490 million years ago
tectonicSetting convergent plate margin

Referenced by (19)

Full triples — surface form annotated when it differs from this entity's canonical label.

Appalachian orogeny hasPart Taconic orogeny
Appalachian orogeny orogenyPhase Taconic orogeny
Caledonian orogeny precededBy Taconic orogeny
Taconic Mountains geologicalProvince Taconic orogeny
this entity surface form: Taconic orogeny belt
Taconic Mountains formedBy Taconic orogeny
Taconic orogeny produced Taconic orogeny self-linksurface differs
this entity surface form: Taconic clastic wedge
closure of Iapetus Ocean partOf Taconic orogeny
Acadian orogeny follows Taconic orogeny
Ridge-and-Valley Appalachians orogeny Taconic orogeny
Iapetus Ocean closureResultedIn Taconic orogeny
Manhattan schist formedDuring Taconic orogeny
Appalachian Basin formedBy Taconic orogeny
Taconic volcanic arc orogeny Taconic orogeny
Taconic volcanic arc partOf Taconic orogeny
Blountian tectophase partOf Taconic orogeny
Blountian tectophase associatedWith Taconic orogeny
this entity surface form: Taconic orogenic cycle
Blountian tectophase relatedTo Taconic orogeny
this entity surface form: Taconic tectophases
Blountian tectophase definedWithin Taconic orogeny
this entity surface form: Taconic orogenic framework
Appalachian geology relatedTo Taconic orogeny