The Laboratory of Geochronology and Isotope Geochemistry of IGG-CNR
(Italy) provides an integrated system of expertise, instrumental
facilities and analytical protocols, suitable to accurately carry out:
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geochronologic data by means of
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40Ar–39Ar radiometric dating of potassic glasses and mineral,
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archaeomagentic dating of volcanic deposits and fiery
structures,
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fission track analysis on apatite and zircon:
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isotopic analysis of a wide variety of solid and aqueous matrices
thanks to the availability of TIMS and MC-ICPMS techniques.
The analytical skills of the IGG-CNR of Pisa1 laboratory include:
Methods and Expertise
Geochronology
40Ar–39Ar Geochronology of potassic glasses and minerals. The method can
be applied to a wide range of geological problems and to rocks varying
in age from a few thousand years to the oldest rocks available.
Current extractions methods include:
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in-situ dating of rock chips and of single mineral grains at high
spatial resolution;
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step-heating analyses of single crystal or population of mineral
grains;
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total fusion analyses of single crystal or population of grains.
Expertise: geochronology of volcanic rocks, with special reference to
Quaternary volcanic products (including tephra); geochronology of
brittle (pseudotachylytes) and ductile deformations.
Isotope Geochemistry (Thermal Ionization Mass Spectrometry – TIMS;
MC-ICP-MS)
Analysis of Sr, Nd, and Pb radiogenic isotopes and Fe, Li, B stable
isotopes on a wide variety of solid and aqueous matrices, such as
silicate rocks and minerals, limestones, thermal waters, brines.
Expertise includes:
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characterization of magma mantle sources, magma evolutionary
processes, relationships between geodynamics and magmatic activity;
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magmatic-hydrothermal transition and implications for active and
fossil hydrothermal systems;
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subduction-related mass transfer, processes occurring at slab
interface and deep recycling of subducted material.
