Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia
The Skellefte district is one of the most important mining districts in Sweden, located in an early Proterozoic (1.90-1.87Ga) volcanic arc province in the Baltic Shield, northern Sweden. The district consists of a complex volcanosedimentary succession formed by submarine, mainly felsic, volcanic roc...
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Sociedad Geológica de España
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ftunivhuelva:oai:rabida.uhu.es:10272/8631 2023-05-15T15:25:44+02:00 Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia Emplacement, hydrothermal alteration and metamorphism sequence in the Jörn Granitoid Complex, Skellefte mining district, northern Sweden González Roldán, Manuel Jesús Allen, Rodney L. Donaire Romero, Teodosio Pascual Martínez, Emilio 2006 http://hdl.handle.net/10272/8631 spa spa Sociedad Geológica de España http://hdl.handle.net/10272/8631 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess CC-BY-NC-ND Jörn Granitoids Skellefte district Precambrian intrusions info:eu-repo/semantics/article 2006 ftunivhuelva 2021-08-11T19:42:19Z The Skellefte district is one of the most important mining districts in Sweden, located in an early Proterozoic (1.90-1.87Ga) volcanic arc province in the Baltic Shield, northern Sweden. The district consists of a complex volcanosedimentary succession formed by submarine, mainly felsic, volcanic rocks named Skellefte Group, overlain by a subaerial, felsic volcanic succession named Arvidsjaur Group and shallow- to deep-marine sedimentary rocks known as Vargfors Group (Allen et al., 1996). The Jörn Granitoid Complex (JGC) crops out at the northern boundary of the Skellefte district, and is constituted by several intrusions ranging in composition from gabbro to granite. Some features of the JGC suggest that it is comagmatic with the volcanic rocks of the Skellefte and Arvidsjaur Group. Our recent study has revealed that earlier intrusives in the complex (GI) have significant geochemical differences with the rest of plutonic rocks in the complex (GII to GIV). Crystallization of GI was followed by intense hydrothermal alteration and late, regional contact metamorphism that do not affect the later GII to GIV facies. This sequence in time, together with the chemical contrasts between the successive Jörn facies, suggests that a significant time gap lasted between the emplacement of GI and the later plutonic rocks in the Jörn complex. This is probably relevant to the geological history and ore research in the district, in that a major change occurred between GI and the rest of the JGC facies, involving changes in the geochemical character of magmatism and coeval thermal activity Article in Journal/Newspaper Arvidsjaur Norte de Suecia Northern Sweden Universidad de Huelva: Arias Montano Arvidsjaur ENVELOPE(19.167,19.167,65.590,65.590) Suecia ENVELOPE(-62.617,-62.617,-66.733,-66.733) |
institution |
Open Polar |
collection |
Universidad de Huelva: Arias Montano |
op_collection_id |
ftunivhuelva |
language |
Spanish |
topic |
Jörn Granitoids Skellefte district Precambrian intrusions |
spellingShingle |
Jörn Granitoids Skellefte district Precambrian intrusions González Roldán, Manuel Jesús Allen, Rodney L. Donaire Romero, Teodosio Pascual Martínez, Emilio Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
topic_facet |
Jörn Granitoids Skellefte district Precambrian intrusions |
description |
The Skellefte district is one of the most important mining districts in Sweden, located in an early Proterozoic (1.90-1.87Ga) volcanic arc province in the Baltic Shield, northern Sweden. The district consists of a complex volcanosedimentary succession formed by submarine, mainly felsic, volcanic rocks named Skellefte Group, overlain by a subaerial, felsic volcanic succession named Arvidsjaur Group and shallow- to deep-marine sedimentary rocks known as Vargfors Group (Allen et al., 1996). The Jörn Granitoid Complex (JGC) crops out at the northern boundary of the Skellefte district, and is constituted by several intrusions ranging in composition from gabbro to granite. Some features of the JGC suggest that it is comagmatic with the volcanic rocks of the Skellefte and Arvidsjaur Group. Our recent study has revealed that earlier intrusives in the complex (GI) have significant geochemical differences with the rest of plutonic rocks in the complex (GII to GIV). Crystallization of GI was followed by intense hydrothermal alteration and late, regional contact metamorphism that do not affect the later GII to GIV facies. This sequence in time, together with the chemical contrasts between the successive Jörn facies, suggests that a significant time gap lasted between the emplacement of GI and the later plutonic rocks in the Jörn complex. This is probably relevant to the geological history and ore research in the district, in that a major change occurred between GI and the rest of the JGC facies, involving changes in the geochemical character of magmatism and coeval thermal activity |
format |
Article in Journal/Newspaper |
author |
González Roldán, Manuel Jesús Allen, Rodney L. Donaire Romero, Teodosio Pascual Martínez, Emilio |
author_facet |
González Roldán, Manuel Jesús Allen, Rodney L. Donaire Romero, Teodosio Pascual Martínez, Emilio |
author_sort |
González Roldán, Manuel Jesús |
title |
Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
title_short |
Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
title_full |
Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
title_fullStr |
Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
title_full_unstemmed |
Secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el Complejo Intrusivo de Jörn, distrito minero de Skellefte, norte de Suecia |
title_sort |
secuencia de emplazamiento, alteración hidrotermal y metamorfismo en el complejo intrusivo de jörn, distrito minero de skellefte, norte de suecia |
publisher |
Sociedad Geológica de España |
publishDate |
2006 |
url |
http://hdl.handle.net/10272/8631 |
long_lat |
ENVELOPE(19.167,19.167,65.590,65.590) ENVELOPE(-62.617,-62.617,-66.733,-66.733) |
geographic |
Arvidsjaur Suecia |
geographic_facet |
Arvidsjaur Suecia |
genre |
Arvidsjaur Norte de Suecia Northern Sweden |
genre_facet |
Arvidsjaur Norte de Suecia Northern Sweden |
op_relation |
http://hdl.handle.net/10272/8631 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766356280389140480 |