(c. 2800 Ma old) supracrustal rocks; the latter are divided by a thrust into a lower volcanic unit and an upper sedimentary and volcaniclastic unit. The lower volcanic unit comprises three parts: a basal pillowed greenstone sequence, an acid volcanic complex, and an upper mafi c igneous complex. Int...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.489.9456 http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.489.9456 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.489.9456 2023-05-15T16:01:06+02:00 Henrik Stendal Christian Knudsen Mogens Marker Bjørn Thomassen The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.489.9456 http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.489.9456 http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf Discovery of gold anomalies by the Geological Survey of Greenland (GGU) in north-east Disko Bugt in text ftciteseerx 2016-01-08T08:24:33Z (c. 2800 Ma old) supracrustal rocks; the latter are divided by a thrust into a lower volcanic unit and an upper sedimentary and volcaniclastic unit. The lower volcanic unit comprises three parts: a basal pillowed greenstone sequence, an acid volcanic complex, and an upper mafi c igneous complex. Intensive hydrothermal activity resulted in extensive carbonatisation and sericitisation, which is most intense just above a system of acid feeder dykes within the basal greenstone sequence. Primary enrichment in gold took place during pervasive hydrothermal alteration, and the gold is mainly located in carbonate-altered rocks. Remobilisation of gold occurred during formation of later quartz veins in the altered zone; these quartz veins have gold contents of up to 60 ppm. The geological setting, geochemistry and formation of the gold mineralisation at Eqi is similar to many Archaean gold deposits in the Abitibi belt of Canada. Text Disko bugt Greenland Unknown Canada Greenland |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Discovery of gold anomalies by the Geological Survey of Greenland (GGU) in north-east Disko Bugt in |
spellingShingle |
Discovery of gold anomalies by the Geological Survey of Greenland (GGU) in north-east Disko Bugt in Henrik Stendal Christian Knudsen Mogens Marker Bjørn Thomassen |
topic_facet |
Discovery of gold anomalies by the Geological Survey of Greenland (GGU) in north-east Disko Bugt in |
description |
(c. 2800 Ma old) supracrustal rocks; the latter are divided by a thrust into a lower volcanic unit and an upper sedimentary and volcaniclastic unit. The lower volcanic unit comprises three parts: a basal pillowed greenstone sequence, an acid volcanic complex, and an upper mafi c igneous complex. Intensive hydrothermal activity resulted in extensive carbonatisation and sericitisation, which is most intense just above a system of acid feeder dykes within the basal greenstone sequence. Primary enrichment in gold took place during pervasive hydrothermal alteration, and the gold is mainly located in carbonate-altered rocks. Remobilisation of gold occurred during formation of later quartz veins in the altered zone; these quartz veins have gold contents of up to 60 ppm. The geological setting, geochemistry and formation of the gold mineralisation at Eqi is similar to many Archaean gold deposits in the Abitibi belt of Canada. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Henrik Stendal Christian Knudsen Mogens Marker Bjørn Thomassen |
author_facet |
Henrik Stendal Christian Knudsen Mogens Marker Bjørn Thomassen |
author_sort |
Henrik Stendal |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.489.9456 http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Disko bugt Greenland |
genre_facet |
Disko bugt Greenland |
op_source |
http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.489.9456 http://www.geus.dk/publications/bull-gl/nr181/nr181_p129-140.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766397096298020864 |