The Azores plateau : an example of ridge-hot spot interaction

Gente, Pascal; Dyment, J.; Maia, M.; Goslin, Jean

doi:10.3997/2214-4609-pdb.168.arq_801

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2) The lineated magnetic anomaly pattern of the oceanic crust may also be blurred in areas where extensive volcanics (and their strong and complex three-dimensional anomalies) overlay and possibly demagnetize such pre-existing oceanic crust. Coherent linear magnetic anomalies are only observed on a Large Igneous Province (LIP) when the LIP is formed at a ridge axis and displays a thicker but otherwise similar oceanic crust, as in Iceland (Jónsson et al, 1991), the Azores Plateau (Gente et al, 2003), and the Shatsky Rise (Sager et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

Structure, age, and origin of the Caribbean Plate unraveled

Garcia-Reyes

Dyment

2021

Earth and Planetary Science Letters

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Structure, age, and origin of the Caribbean Plate unraveled

Garcia-Reyes

Dyment

2021

Earth and Planetary Science Letters

View full text Add to dashboard Cite

NE Atlantic break-up: a re-examination of the Iceland mantle plume model and the Atlantic–Arctic linkage

Lundin

Doré²

2005

PGC

View full text Add to dashboard Cite

Finalbreak-up ofPangaea -openingofthe NE Atlantic (NEA)andthe Arctic Eurasia Basin-was associated withsignificant magmatism (inthe NEA)andiscommonlyascribed to thermaleffects from aprotoIcelandplume.The plumeisoftenassumed to be fixed withrespecttothe Earth's coreandto havegoverned NEA break-up. Itisargued herethatt he Icelanda nomaly,past andpresent,c annot represent afi xed plume, nor be rooted att he core-mantleb oundary andthatt he Greenland-FaroesRidge isinconsistent withaclassic timetransgressiveh otspot track.Itiss hown thatt he Icelanda nomaly hasp robably beenl ocated att he constructive plateb oundary (Mid-Atlantic Ridge anda ntecedents) since its inception. Whilerecent studiesallow for some 'wandering'ofhotspots relativeto the coreandmantle, itisconsidered unlikely thatsuch driftofamantleplume wouldprecisely match lithospheric driftino rdert oachievec onstant centeringon the spreadingridge.The alternativeviewis,therefore, supported -thatthe anomaly isanuppermantleresponseto platebreak-up. The two pulseso fN EA magmatism arerelated to separatephaseso fN orthA tlantic break-up. Early Paleocene magmatism ( c .62-58Ma)wasgoverned byashort-lived attempt atseekinganewriftpath, intermediateintime andspace betweent he Labrador Sea-BaffinBayandthe NEA-Eurasia Basinr ifts. The voluminous Early Eocenemagmatism ( c .56-53Ma)alongthe NEA margins wasrelated to finalbreak-up ofPangaea,exploiting the collapsed Caledonianfoldb elt. The interpretations herea rea to ddsw ithI celandrepresentingaclassic Morgan-typeplumeanditissuggested thatthe magmatism inthe NEA andthe Icelandanomaly represent a'topdown' effecto fplatetectonics.

show abstract

The Azores plateau : an example of ridge-hot spot interaction

Cited by 2 publications

References 0 publications

Structure, age, and origin of the Caribbean Plate unraveled

Structure, age, and origin of the Caribbean Plate unraveled

NE Atlantic break-up: a re-examination of the Iceland mantle plume model and the Atlantic–Arctic linkage

Contact Info

Product

Resources

About