Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province
ABSTRACT. Scattered unite and iherzolite nodules occur in one of the youngest basanitoid lavas on Ubekendt Ejland. They have protogranular toporphyroclastic tex-tures. The dunites are oamposed of olivine (Fo93.2-91.9b), enstatite (En93.4_92.8) lOW in Al2Oa and CaO, and Cr-spinel (61-13 % Cr20 3 and...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1982
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.9462 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.618.9462 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.618.9462 2023-05-15T16:28:37+02:00 Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province Joroen Gutzon Larsen The Pennsylvania State University CiteSeerX Archives 1982 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.9462 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.9462 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf text 1982 ftciteseerx 2016-01-08T14:52:47Z ABSTRACT. Scattered unite and iherzolite nodules occur in one of the youngest basanitoid lavas on Ubekendt Ejland. They have protogranular toporphyroclastic tex-tures. The dunites are oamposed of olivine (Fo93.2-91.9b), enstatite (En93.4_92.8) lOW in Al2Oa and CaO, and Cr-spinel (61-13 % Cr20 3 and 3-55 % AI203). A solitary lherzolite module has olivine (Fo94.7_94.1), enstatite (En94.7-94.2), Cr-rich spinel, Ti-phlogopite (11 % TiO2), and hyalophane. Petrographic evidence suggests that the two latter minerals have not been introduced by magmatic injection from the host in spite of the refractory nature of the coexisting phases, and metasomatic processes prior to the last deformation are therefore indicated. Partial melting of such mantle material would presumably pro-duce small amounts of alkaline liquids even at very high Text Greenland Unknown Greenland Ubekendt Ejland ENVELOPE(-53.717,-53.717,71.167,71.167) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT. Scattered unite and iherzolite nodules occur in one of the youngest basanitoid lavas on Ubekendt Ejland. They have protogranular toporphyroclastic tex-tures. The dunites are oamposed of olivine (Fo93.2-91.9b), enstatite (En93.4_92.8) lOW in Al2Oa and CaO, and Cr-spinel (61-13 % Cr20 3 and 3-55 % AI203). A solitary lherzolite module has olivine (Fo94.7_94.1), enstatite (En94.7-94.2), Cr-rich spinel, Ti-phlogopite (11 % TiO2), and hyalophane. Petrographic evidence suggests that the two latter minerals have not been introduced by magmatic injection from the host in spite of the refractory nature of the coexisting phases, and metasomatic processes prior to the last deformation are therefore indicated. Partial melting of such mantle material would presumably pro-duce small amounts of alkaline liquids even at very high |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Joroen Gutzon Larsen |
spellingShingle |
Joroen Gutzon Larsen Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
author_facet |
Joroen Gutzon Larsen |
author_sort |
Joroen Gutzon Larsen |
title |
Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
title_short |
Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
title_full |
Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
title_fullStr |
Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
title_full_unstemmed |
Mantle-derived dunite and lherzolite nodules from Ubekendt Ejland, west Greenland Tertiary province |
title_sort |
mantle-derived dunite and lherzolite nodules from ubekendt ejland, west greenland tertiary province |
publishDate |
1982 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.9462 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf |
long_lat |
ENVELOPE(-53.717,-53.717,71.167,71.167) |
geographic |
Greenland Ubekendt Ejland |
geographic_facet |
Greenland Ubekendt Ejland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.618.9462 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-340-329.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766018286234894336 |