Publications

@article{Morganti2020,

title = {A numerical application of the Eshelby theory for geobarometry of non-ideal host-inclusion systems},

author = {S. Morganti and Mattia Luca Mazzucchelli and M. Alvaro and A. Reali},

url = {http://link.springer.com/10.1007/s11012-020-01135-z},

doi = {10.1007/s11012-020-01135-z},

issn = {0025-6455},

year  = {2020},

date = {2020-02-01},

urldate = {2020-02-01},

journal = {Meccanica},

pages = {1--14},

abstract = {In the complex geodynamic processes occurring at convergent plate margins, rocks can be subducted at depth into the Earth experiencing metamorphism. A mineral inhomogeneity entrapped into another mineral, after exhumation to the Earth surface, will exhibit stress and strain fields different from those of the host because of the different thermoelastic properties. In the present paper, we propose a finite-element-based approach to determine the Eshelby and the relaxations tensors for any morphology of the inhomogeneity and for any crystallographic symmetry of the host. The proposed procedure can be directly applied in the framework of elastic geobarometry to estimate, on the basis of the Eshelby theory, the entrapment conditions (pressure and temperature) from the residual strain field measured in the inhomogeneity. This aspect represents a step forward to currently available models for geobarometry allowing the investigation of complex morphologies of the inhomogeneity in systems with general material anisotropy. We validate the proposed approach versus Eshelby analytical solutions available for spherical and ellipsoidal inclusions and we show the application to a real geological case of high pressure metamorphic rocks.},

keywords = {elasticity, FEM, Finite element method, Mechanical Engineering},

pubstate = {published},

tppubtype = {article}

}

@article{Campomenosi2018,

title = {How geometry and anisotropy affect residual strain in host-inclusion systems: Coupling experimental and numerical approaches},

author = {Nicola Campomenosi and Mattia Luca Mazzucchelli and Boriana Mihailova and Marco Scambelluri and Ross John Angel and Fabrizio Nestola and Alessandro Reali and Matteo Alvaro},

url = {https://pubs.geoscienceworld.org/msa/ammin/article/103/12/2032/567206/How-geometry-and-anisotropy-affect-residual-strain},

doi = {10.2138/am-2018-6700CCBY},

issn = {0003-004X},

year  = {2018},

date = {2018-12-01},

urldate = {2018-12-01},

journal = {American Mineralogist},

volume = {103},

number = {12},

pages = {2032--2035},

keywords = {Elastic barometry, elasticity, Raman spectroscopy},

pubstate = {published},

tppubtype = {article}

}

@article{Mazzucchelli2018,

title = {Elastic geothermobarometry: Corrections for the geometry of the host-inclusion system},

author = {Mattia Luca Mazzucchelli and P. Burnley and Ross John Angel and S. Morganti and M. C. C Domeneghetti and F. Nestola and M. Alvaro},

url = {https://pubs.geoscienceworld.org/gsa/geology/article/46/3/231/526077/Elastic-geothermobarometry-Corrections-for-the},

doi = {10.1130/G39807.1},

issn = {0091-7613},

year  = {2018},

date = {2018-03-01},

urldate = {2018-03-01},

journal = {Geology},

volume = {46},

number = {3},

pages = {231--234},

keywords = {Elastic barometry, elasticity, FEM, Finite element method},

pubstate = {published},

tppubtype = {article}

}

@article{angel2017eosfit,

title = {EosFit-Pinc: A simple GUI for host-inclusion elastic thermobarometry},

author = {Ross John Angel and Mattia Luca Mazzucchelli and Matteo Alvaro and Fabrizio Nestola},

url = {https://doi.org/10.2138/am-2017-6190},

doi = {10.2138/am-2017-6190},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {American Mineralogist},

volume = {102},

number = {9},

pages = {1957--1960},

abstract = {Elastic geothermobarometry is a method of determining metamorphic conditions from the excess pressures exhibited by mineral inclusions trapped inside host minerals. An exact solution to the problem of combining non-linear Equations of State (EoS) with the elastic relaxation problem for elastically isotropic spherical host-inclusion systems without any approximations of linear elasticity is presented. The solution is encoded into a Windows GUI program EosFit-Pinc. The program performs host-inclusion calculations for spherical inclusions in elastically isotropic systems with full P-V-T EoS for both phases, with a wide variety of EoS types. The EoS values of any minerals can be loaded into the program for calculations. EosFit-Pinc calculates the isomeke of possible entrapment conditions from the pressure of an inclusion measured when the host is at any external pressure and temperature (including room conditions), and it can calculate final inclusion pressures from known entrapment conditions. It also calculates isomekes and isochors of the two phases.},

keywords = {elasticity, equations of state, Fortran, software development},

pubstate = {published},

tppubtype = {article}

}

@article{Angel2015diamond,

title = {Diamond thermoelastic properties and implications for determining the pressure of formation of diamond–inclusion systems},

author = {Ross John Angel and Matteo Alvaro and Fabrizio Nestola and Mattia Luca Mazzucchelli},

doi = {10.1016/j.rgg.2015.01.014},

year  = {2015},

date = {2015-01-01},

urldate = {2015-01-01},

journal = {Russian Geology and Geophysics},

volume = {56},

number = {1-2},

pages = {211--220},

keywords = {Diamond, elasticity, equations of state},

pubstate = {published},

tppubtype = {article}

}

@article{Angel2015JMGb,

title = {How large are departures from lithostatic pressure? Constraints from host–inclusion elasticity},

author = {Ross John Angel and P Nimis and Mattia Luca Mazzucchelli and M Alvaro and Fabrizio Nestola},

url = {http://dx.doi.org/10.1111/jmg.12138},

doi = {10.1111/jmg.12138},

year  = {2015},

date = {2015-01-01},

journal = {Journal of Metamorphic Geology},

volume = {33},

number = {8},

pages = {801--813},

keywords = {elasticity},

pubstate = {published},

tppubtype = {article}

}

@article{Angel2014relaxation,

title = {Geobarometry from host-inclusion systems: The role of elastic relaxation},

author = {Ross John Angel and Mattia Luca Mazzucchelli and Matteo Alvaro and Paolo Nimis and Fabrizio Nestola},

url = {https://doi.org/10.2138/am-2014-5047},

doi = {10.2138/am-2014-5047},

issn = {19453027},

year  = {2014},

date = {2014-01-01},

urldate = {2014-01-01},

journal = {American Mineralogist},

volume = {99},

number = {10},

pages = {2146--2149},

abstract = {© 2014 by Walter de Gruyter Berlin/Boston. Minerals trapped as inclusions within other host minerals can develop residual stresses on exhumation as a result of the differences between the thermo-elastic properties of the host and inclusion phases. The determination of possible entrapment pressures and temperatures from this residual stress requires the mutual elastic relaxation of the host and inclusion to be determined. Previous estimates of this relaxation have relied on the assumption of linear elasticity theory. We present a new formulation of the problem that avoids this assumption. We show that for soft inclusions such as quartz in relatively stiff host materials such as garnet, the previous analysis yields entrapment pressures in error by the order of 0.1 GPa. The error is larger for hosts that have smaller shear moduli than garnet.},

keywords = {elasticity, residual stress},

pubstate = {published},

tppubtype = {article}

}