Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E
Trace element and isotopic signatures of magmatic rock samples from ODP Hole 642E at the Vøring Plateau provide insight into the interaction processes of mantle melt with crust during the initial magma extrusion phases at the onset of the continental breakup. The intermediate (basaltic-andesitic) to...
Main Authors: | , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2009
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.763434 https://doi.org/10.1594/PANGAEA.763434 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.763434 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.763434 2024-09-15T18:09:40+00:00 Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E Meyer, Romain Hertogen, Jan GH Pedersen, Rolf B Viereck-Götte, Lothar Abratis, Michael LATITUDE: 67.220000 * LONGITUDE: 2.930000 * DATE/TIME START: 1985-07-04T00:10:00 * DATE/TIME END: 1985-08-01T23:00:00 2009 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.763434 https://doi.org/10.1594/PANGAEA.763434 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.763434 https://doi.org/10.1594/PANGAEA.763434 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Meyer, Romain; Hertogen, Jan GH; Pedersen, Rolf B; Viereck-Götte, Lothar; Abratis, Michael (2009): Interaction of mantle derived melts with crust during the emplacement of the Vøring Plateau, N.E. Atlantic. Marine Geology, 261(1-4), 3-16, https://doi.org/10.1016/j.margeo.2009.02.007 104-642E DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP dataset publication series 2009 ftpangaea https://doi.org/10.1594/PANGAEA.76343410.1016/j.margeo.2009.02.007 2024-07-24T02:31:21Z Trace element and isotopic signatures of magmatic rock samples from ODP Hole 642E at the Vøring Plateau provide insight into the interaction processes of mantle melt with crust during the initial magma extrusion phases at the onset of the continental breakup. The intermediate (basaltic-andesitic) to felsic (dacitic and rhyolitic) Lower Series magmas at ODP Hole 642E appear to be produced by large amounts of melting of upper crustal material. This study not only makes use of the traditional geochemical tools to investigate crust-mantle interaction, but also explores the value of Cs geochemistry as an additional tool. The element Cs forms the largest lithophile cation, and shows the largest contrast in concentration between (depleted) mantle and continental crust. As such it is a very sensitive indicator of involvement of crustal material. The Cs data reinforce the conclusion drawn from isotopic signatures that the felsic magmas are largely anatectic crustal melts. The down-hole geochemical variation within ODP Hole 642E defines a decreasing continental crustal influence from the Lower Series into the Upper Series. This is essential information to distinguish intrinsic geochemical properties of the mantle melts from signatures imposed by crustal contamination. A comparison with data from the SE Greenland margin highlights the compositional asymmetry of the crust-mantle interactions at both sides of the paleo-Iapetus suture. While Lower Series and Middle Series rocks from the SE Greenland margin have isotopic signatures reflecting interactions with lower and middle crust, such signatures have not been observed at the mid-Norwegian margin. The geochemical data either point to a dissimilar Caledonian crustal composition and/or to different geodynamic pre-breakup rifting history at the two NE Atlantic margin segments. Other/Unknown Material Greenland Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(2.930000,2.930000,67.220000,67.220000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
104-642E DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
spellingShingle |
104-642E DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP Meyer, Romain Hertogen, Jan GH Pedersen, Rolf B Viereck-Götte, Lothar Abratis, Michael Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
topic_facet |
104-642E DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
description |
Trace element and isotopic signatures of magmatic rock samples from ODP Hole 642E at the Vøring Plateau provide insight into the interaction processes of mantle melt with crust during the initial magma extrusion phases at the onset of the continental breakup. The intermediate (basaltic-andesitic) to felsic (dacitic and rhyolitic) Lower Series magmas at ODP Hole 642E appear to be produced by large amounts of melting of upper crustal material. This study not only makes use of the traditional geochemical tools to investigate crust-mantle interaction, but also explores the value of Cs geochemistry as an additional tool. The element Cs forms the largest lithophile cation, and shows the largest contrast in concentration between (depleted) mantle and continental crust. As such it is a very sensitive indicator of involvement of crustal material. The Cs data reinforce the conclusion drawn from isotopic signatures that the felsic magmas are largely anatectic crustal melts. The down-hole geochemical variation within ODP Hole 642E defines a decreasing continental crustal influence from the Lower Series into the Upper Series. This is essential information to distinguish intrinsic geochemical properties of the mantle melts from signatures imposed by crustal contamination. A comparison with data from the SE Greenland margin highlights the compositional asymmetry of the crust-mantle interactions at both sides of the paleo-Iapetus suture. While Lower Series and Middle Series rocks from the SE Greenland margin have isotopic signatures reflecting interactions with lower and middle crust, such signatures have not been observed at the mid-Norwegian margin. The geochemical data either point to a dissimilar Caledonian crustal composition and/or to different geodynamic pre-breakup rifting history at the two NE Atlantic margin segments. |
format |
Other/Unknown Material |
author |
Meyer, Romain Hertogen, Jan GH Pedersen, Rolf B Viereck-Götte, Lothar Abratis, Michael |
author_facet |
Meyer, Romain Hertogen, Jan GH Pedersen, Rolf B Viereck-Götte, Lothar Abratis, Michael |
author_sort |
Meyer, Romain |
title |
Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
title_short |
Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
title_full |
Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
title_fullStr |
Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
title_full_unstemmed |
Elements and isotopic measurements of magmatic rock samples from ODP Hole 104-642E |
title_sort |
elements and isotopic measurements of magmatic rock samples from odp hole 104-642e |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.763434 https://doi.org/10.1594/PANGAEA.763434 |
op_coverage |
LATITUDE: 67.220000 * LONGITUDE: 2.930000 * DATE/TIME START: 1985-07-04T00:10:00 * DATE/TIME END: 1985-08-01T23:00:00 |
long_lat |
ENVELOPE(2.930000,2.930000,67.220000,67.220000) |
genre |
Greenland Norwegian Sea |
genre_facet |
Greenland Norwegian Sea |
op_source |
Supplement to: Meyer, Romain; Hertogen, Jan GH; Pedersen, Rolf B; Viereck-Götte, Lothar; Abratis, Michael (2009): Interaction of mantle derived melts with crust during the emplacement of the Vøring Plateau, N.E. Atlantic. Marine Geology, 261(1-4), 3-16, https://doi.org/10.1016/j.margeo.2009.02.007 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.763434 https://doi.org/10.1594/PANGAEA.763434 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.76343410.1016/j.margeo.2009.02.007 |
_version_ |
1810447252664090624 |