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Questions related from Michele Lustrino
Dear RG community members, I have found this sample in our rock collection used with bachelor students enrolled in Geology studies. I do not know where this rock comes from. I have made a thin...
18 June 2024 9,476 23 View
Dear RG members, I have produced a thin section of a rock in our rock collection, used for students enrolled in the second year of the bachelor of Geology at Sapienza University of Rome....
18 June 2024 629 3 View
Basaltic (or generically MgO-rich igneous rocks) have olivine phenocrysts commonly replaced by calcite, expecially if found in submarine environments. Of course this is not the only way to...
19 October 2023 1,402 1 View
In fuel cells hydrogen (H2) is ionized in the anode and is transformed into H+ and e-. Then H+ moves through the electrolyte membrane towards the cathode, where O2 is flushed. In the meantime, the...
22 June 2023 5,198 7 View
I have tried to prepare a useful MS Excel spreadsheet to run easy calculation for the geothermobarometers of Lee et al. (2009) and Plank & Forsyth (2016). I am not sure I have done the right...
24 August 2022 9,159 0 View
Liquid core is cooling due to heat conduction towards the lower mantle. Independently from the absolute liquid core temperature (likely much lower than usually assumed considering pure iron...
26 March 2020 5,102 5 View
I would like to know what is the maximum amount of Sr measured in sedimentary carbonates. I do not say in oolites or in claim shells, but I am looking for true sedimentary rocks with calcitic...
18 January 2016 3,887 6 View
I usually see geotherms (°C/km) calculated from heat flow data (mW/m2). How can I link these two measurements and, above all, up to what point the calculation of deep geothermal gradients (e.g.,...
17 August 2015 6,710 15 View
Hi there, do you know if there is any software able to transform a mineral (or amorphous phase) analysis (e.g., a microprobe result) into an EDS spectrum? Of course there are software able to do...
11 August 2014 1,811 5 View
Despite being commonly used for more than one century, the concept of silica saturation has not yet reached a common definition. According to igneous petrologists dealing with magmas, a...
24 June 2014 6,461 24 View
Dear RG members, IUGS is planning a new edition of the classical "Le Maitre" book devoted to the classification and nomenclature of igneous rocks. A group of 17 igneous petrologists (hereafter...
01 January 1970 7,966 35 View
01 January 1970 2,125 4 View
01 January 1970 5,056 5 View
01 January 1970 2,885 0 View
