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Featured researches published by D. Gasperini.


Geochemistry Geophysics Geosystems | 2010

Isotopic evidence for chaotic imprint in upper mantle heterogeneity

Pietro Armienti; D. Gasperini

[1]xa0The intrinsic structure of the isotope data set of samples from the Mid-Atlantic Ridge and East Pacific Rise, believed to represent the isotopic composition of their mantle source, reveals a close relationship between sample spatial distribution and their geochemical features. The spatial distribution of their isotopic heterogeneity is self-similar on a scale between 5000 and 6000 km (about 1/6 of Earths circumference), suggesting a self-organized structure for the underlying mantle. This implies the imprint of chaotic mantle processes, induced by mantle flow and likely related to an early phase of highly dynamic behavior of the Earths mantle. The size of the identified self-organized region reflects the large length scale of upper mantle chemical variability, and it is likely frozen since the Proterozoic. The geochemical heterogeneity of the asthenosphere along the ridges is believed to record a transition in the thermal conditions of the Earths mantle and to be reflected in the l = 6 peak expansion of several geophysical observables.


AGU Fall Meeting | 2000

OIB-Type magmas in subduction zones: mantle counterflow above detaching plates

Francis Albarède; D. Gasperini; Janne Blichert-Toft; Delphine Bosch; A. Del Moro; Patrizia Macera


Geochemical Journal | 2011

Lithium abundance and isotope composition of Logudoro basalts, Sardinia: Origin of light Li signature

Taehoon Kim; Shun'ichi Nakai; D. Gasperini


TRANSALP Conference | 2003

Tertiary magmatism in the Eastern Alps

Patrizia Macera; D. Gasperini; K. Maffei; Silvana Martin; Claudia Piromallo


EGS-AGU-EUG Joint Assembly, Nice, France, | 2003

Where is the tail of the European plume volcanism

D. Gasperini; K. Maffei; Claudia Piromallo; Patrizia Macera; Claudio Faccenna; Silvana Martin; Giorgio Ranalli


EGS-AGU-EUG Joint Assembly, Nice, France, | 2003

Lower mantle upwelling in subduction zones: an example from the italian south-eastern Alps

K Maffei; D. Gasperini; Claudia Piromallo; Patrizia Macera; Claudio Faccenna; Silvana Martin; Giorgio Ranalli


Geoitalia 2011 - VIII Forum Italiano di Scienze della Terra | 2011

The Garrotxa Volcanic Field (NE Spain): new geochemical constraints

G. Gisbert; D. Gasperini; Delphine Bosch; D. Gimeno; M. Aulinas; Patrizia Macera; J. L. Fernandez Turiel


Geochemistry Geophysics Geosystems | 2010

Isotopic evidence for chaotic imprint in upper mantle heterogeneity: CHAOTIC UPPER MANTLE HETEROGENEITY

Pietro Armienti; D. Gasperini


The EGU General Assembly | 2007

Fingerprint of chaos in immobile element geochemistry of Mt. Etna

D. Gasperini; Pietro Armienti; Patrizia Macera


Goldschmidt Conference | 2004

HIMU-OIB magmatism in subduction zones: An example from the Italian south-eastern Alps

Patrizia Macera; D. Gasperini; Delphine Bosch; Claudio Faccenna; Claudia Piromallo; Giorgio Ranalli; Rezene Mahatsente

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Delphine Bosch

University of Montpellier

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Janne Blichert-Toft

École normale supérieure de Lyon

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Francis Albarède

École Normale Supérieure

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