Mantle heterogeneity beneath the southern Mid-Atlantic Ridge: Trace element evidence for contamination of ambient asthenospheric mantle

Earth and Planetary Science Letters

Volumn 203, Issue 1, 2002, Pages 479-498

  Le Roux, P J ^a   Le Roex, A P ^a   Schilling, J G ^b   Shimizu, N ^c   Perkins, W W ^d   Pearce, N J G ^d  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b UNIVERSITY OF RHODE ISLAND   (United States)

^c WOODS HOLE OCEANOGRAPHIC INSTITUTION   (United States)

^d ABERYSTWYTH UNIVERSITY   (United Kingdom)

Author keywords

Heterogoneity; Magma contamination; Mantle; Mid Atlantic Ridge; Trace elements

Indexed keywords

ASTHENOSPHERE; CRUSTAL CONTAMINATION; HETEROGENEITY; MAGMA; MANTLE; MID-OCEAN RIDGE BASALT; TRACE ELEMENT;

ATLANTIC OCEAN;

EID: 0037108045     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(02)00832-4     Document Type: Article

References (51)

1. Plume-ridge interactions of the Discovery and Shona mantle plumes with the Southern Mid-Atlantic Ridge (40°-55°S)
2. Petrologic and geochemical variations along the Mid-Atlantic Ridge from 29°N to 73°N
3. Geochemistry, mineralogy and petrogenesis of lavas erupted along the Southwest Indian Ridge between the bouvet triple junction and 11 degrees East
4. Geochemistry, mineralogy and magmatic evolution of the basaltic and trachytic lavas from Gough Island, South Atlantic
5. Petrology and geochemistry of MORB from 25°E to 46°E along the Southwest Indian Ridge: Evidence for contrasting styles of mantle enrichment
6. 204Pb mid-ocean ridge basalt: Isotope systematics of the Central Southwest Indian Ridge (17°-50)̇
7. Hotspot-migrating ridge interaction in the South Atlantic
8. Petrological and geochemical variations along the Mid-Atlantic Ridge between 46°S and 32°S: Influence of the Tristan da Cunha mantle plume
9. Pb isotope evidence in the South Atlantic for migrating ridge-hotspot interaction
10. Local and regional heterogeneity in MORB from the Mid-Atlantic Ridge between 54.5°S and 51°S: Evidence for geochemical enrichment
11. Influence of the Discovery and Shona mantle plumes on the Southern Mid-Atlantic Ridge: Rare earth evidence
12. A primitive plume neon component in MORB: The Shona ridge-anomaly, South Atlantic (51-52°S)
13. Rare gas systematics on the southern Mid-Atlantic Ridge: Constraints on the lower mantle and dupal source
14. Isotope characteristics of the Okenyenya igneous complex, northwestern Namibia: Constraints on the composition of the early Tristan plume and the origin of the EM1 mantle component
15. Recycled ocean crust and sediment in Indian Ocean MORB
16. A compilation of new and published major and trace element data for NIST SRM 610 and NIST SRM 612 glass reference materials
17. Lithospheric thickness beneath the southern Kenya Rift: Implications from basalt geochemistry
18. Crystallisation beneath the Southern Mid-Atlantic Ridge (40°-55°S), evidence for high pressure of initiation of crystallisation
19. MORB melting processes beneath the Southern Mid-Atlantic ridge (40°-55°S): A role for pyroxenite and residual garnet
20. Source regions of mid-ocean ridge basalts: Evidence for enrichment
21. Geochemistry of basalts from the Hayes transform region of the Mid-Atlantic ridge
22. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes
23. Chemical differentiation of the Earth: The relationship between mantle, continental crust, and oceanic crust
24. Observations of ridge-hotspot interactions in the Southern Ocean
25. Systematics of three-component, pseudo-binary mixing lines in 2D isotope ratio space representations and implications for mantle plume-ridge interactions
26. Beyond EM-1 lavas from Afanasy-Nikitin Rise and the Crozet Archipelago, Indian Ocean
27. Petrogenesis and stratigraphy of the high-Ti/Y Urubici magma type in the Paraná flood basalt province and implications for the nature of 'Dupal'-type mantle in the South Atlantic region
28. Remnants of Gondwana continental lithosphere in oceanic upper mantle: Evidence from the South Atlantic Ridge
29. Simple magma supply geometry inferred beneath a segment of the Mid-Atlantic Ridge
30. No evidence from multichannel reflection data for a crustal magma chamber in the MARK area on the Mid-Atlantic Ridge
31. Lead isotope study of young volcanic rocks from mid-ocean ridges, ocean islands and island areas
32. The Karoo igneous province-A problem area for inferring tectonic setting from basalt geochemistry
33. Mantle plumes, flood basalts, and thermal models for melt generation beneath continents: Assessment of a conductive heating model and application to the Parana
34. Oxygen-isotope evidence for recycled crust in the sources of mid-ocean-ridge basalts
35. Mantle geochemistry: The message from oceanic volcanism
36. Role of subducted sediment in the genesis of ocean-island basalts: Geochemical evidence from South Atlantic Ocean islands
37. The origin of ocean island basalt end-member compositions: Trace element and isotopic constraints
38. The geochemistry of marine sediments, island arc magma genesis, and crust-mantle recycling
39. Distinguishing melt and fluid subduction components in Umnak volcanics, Aleutrian Arc
40. Rutile/melt partition coefficients for trace elements and an assessment of the influence of rutile on the trace element characteristics of subduction zone magmas
41. Dehydration and melting experiments constrain the fate of subducted sediment
42. Relative depletion of niobium in some arc magmas and the continental crust partitioning of K, Nb, La and Ce during melt/rock reaction in the upper mantle
43. The chemical composition of subducted sediment and its consequences for the crust and mantle
44. Were aspects of Pan-African deformation linked to Iapetus opening
45. The assembly of Gondwanaland
46. Magma supply in back-arc spreading centre Segment E2, East Scotia Ridge
47. Magma genesis in the New Britain island arc: Further insights into melting and mass transfer processes
48. Isotope geochemistry of the oceanic mantle near the Bouvet triple junction
49. Tapping of magmas from ubiquitous mantle heterogenities: An alternative to mantle plumes
50. The role of mantle plumes in continental breakup case histories from Gondwanaland