Open WL Archief (OWA)

Over het archief

Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

Basisinformatie over ‘Open Access to scholarly information'.

[ meld een fout in dit record ]

mandje (1): toevoegen | toon

---

one publication added to basket [116038]

Basalt and peridotite recovered from Murray Ridge: Are they of supra-subduction origin? Burgath, K.-P.; von Rad, U.; van der Linden, W.; De Block, M.; Khan, A.A.; Roeser, H.A.; Weiss, W. (2002). Basalt and peridotite recovered from Murray Ridge: Are they of supra-subduction origin?, in: Clift, P.D. et al. The tectonic and climatic evolution of the Arabian Sea region. Geological Society Special Publication, 195: pp. 117-135. https://dx.doi.org/10.1144/GSL.SP.2002.195.01.08 In: Clift, P.D. et al. (2002). The tectonic and climatic evolution of the Arabian Sea region. Geological Society Special Publication, 195. The Geological Society: London. e-ISBN 9781862394438. VI, 525 pp. https://dx.doi.org/10.1144/GSL.SP.2002.195, meer In: Hartley, A.J. et al. (Ed.) Geological Society Special Publication. Geological Society of London: Oxford; London; Edinburgh; Boston, Mass.; Carlton, Vic.. ISSN 0305-8719; e-ISSN 2041-4927, meer

---

Beschikbaar in	Auteurs
VLIZ [ aanvragen ]

---

Trefwoorden

Chemistry > Geochemistry Petrography Rocks > Igneous rocks > Ultramafic rocks > Peridotite Rocks > Igneous rocks > Volcanic rocks > Basalts Subduction Topographic features > Submarine features > Ridges > Submarine ridges > Mid-ocean ridges ISW, Arabian Sea [Marine Regions] Marien/Kust

---

Auteurs		Top
Burgath, K.-P. von Rad, U. van der Linden, W., meer De Block, M., meer	Khan, A.A. Roeser, H.A. Weiss, W.

---

Abstract

Petrographic and geochemical data for new basalt and peridotite samples recovered from sampling sites at the Southern Murray Ridge help to constrain models for the evolution of the Owen-Murray Ridge system, which forms the northwestern boundary of the Indian plate. Trace elements immobile during alteration (Ti, Zr, Nb, Y and rare earth elements) suggest that the altered microphyric metabasalt has affinities to magmatism of active margins (island-arc tholeiite sensu lato). It is distinctly different from mid-ocean ridge basalt, back-arc-basin basalt, or intra-plate Deccan Trap basalt. The sampled serpentinized harzburgite or clinopyroxene-poor lherzolite was deformed under mantle conditions and is similar to the mantle section of nearby ophiolite sequences. This association of rocks suggests that an ophiolite mélange was sampled. However, results from sampling station 462 NIOP indicate that the Murray Ridge complex also contains igneous rocks with Deccan Trap affinity. For the emplacement of the island-arc tholeiite we assume an origin in a convergent supra-subduction setting, related to the closing of a Late Cretaceous Neo-Tethyan ocean basin between the Arabian and Indian plates to the south and the Eurasian plate to the north. Since Neogene time, the Murray Ridge-Dalrymple Trough has been underlain by attenuated (?)continental crust and characterized by extensional rift tectonics.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.