Geological stuffs

This page contains a number of files that I produced during the protocol / course / presentation / figures…. construction phase. Feel free to re-use them.

International geological timescale (ICC) :

In geoscience, l’International Chronostratigraphic Chart is used as a reference for defining the different geological levels and is therefore used repeatedly in presentations (courses, articles, popularisation).

The following Excel file contains the ICC 2020 as Excel charts. This makes it very easy to adapt the chart to a presentation (change of size, change of time interval, etc.).

Ranking of geo-(thermo-)chronometers :

In geoscience, there are many methods for dating minerals, more or less sensitive to temperature.

The following table shows the sensitivity of some of these mineral-method combinations. The temperature ranges come from several publications (to be completed). It has been produced for various scientific/teaching presentations (note: the graphs are synchronised with the table in the files).

Magnetic susceptibility of minerals :

One way of sorting minerals in geoscience is to separate them according to their magnetic susceptibility. This approach is traditionally carried out using a device called a Frantz and an established protocol, the best-known example of which is Rosenblum and Brownfield (2000). Their publication includes a mineral classification table, but digitised in image form.

The following Excel file corresponds to this table in modern format, as well as two graphs equivalent to the original publication. It was produced for the creation of a poster in a sorting room (note: the graphics are synchronised with the table in the files).

vertical panel
horizontal table

Tectonic stereography framework :

In tectonics, stereographic projections are used to represent different objects (faults, layers, folds, etc.) or deformation mechanisms (earthquakes, stress, etc.). Among the various frameworks available, those of Wulf and Shmidt are particularly used in teaching.

The following two files are A4 and vectorised (.svg) versions of these outlines, and were produced for teaching purposes.

canevas de Wulf (vectoriel)
Wulf: conformal projection – conservation of angles
caneva de Shmidt (vectoriel)
Shmidt : equivalent projection – surface conservation