Applications of Paleomagnetism and Rock Magnetism in Geochronology
A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".
Deadline for manuscript submissions: closed (22 March 2024) | Viewed by 767
Special Issue Editor
Special Issue Information
Dear Colleagues,
The study of the magnetic properties of rocks provides information that is broadly used in many fields of Earth sciences, for example, geochronology, paleoenvironmental reconstructions, structural geology, and paleogeography.
Among them, geochronology plays a central role in the geological sciences, and it is an indispensable tool to investigate the evolution of our planet since its formation.
In this regard, the information provided from paleomagnetic investigations, and in particular from magnetostratigraphy, has been used in many research works as a tool for the dating of sedimentary and volcanic sequences.
Magnetostratigraphy, representing the record of the polarity reversals of a geomagnetic field as registered via sedimentary and volcanic rocks, is proven to be a valuable tool for correlation between sections from different environments and realms, and also for dating. The character of the randomness of polarity reversals, describing unique patterns of magnetozones, and the fact that the stratigraphic levels recording the same polarity reversal are synchronous, regardless of the environment and the geographic position, illustrate the huge potential of this technique as a correlation tool. The correlation of a given magnetostratigraphic sequence with a reference geomagnetic polarity time scale (GPTS), constrained by radiometric ages and/or astronomical cycles, can indicate a numerical age to the investigated sequence.
In the same way, the record of the variation in the relative paleointensity (RPI) of the geomagnetic field can be used as a correlation tool for Quaternary stratigraphic sequences (sedimentary and volcanic). When the RPI record of a given section is correlated to a time-constrained RPI reference curve (e.g., SINT-800, NAPIS-75, etc.), relative paleointensity can be used as a dating tool.
Furthermore, the study of rock magnetism can be used for geochronological purposes. For example, the variations in rock magnetic parameters (e.g., magnetic susceptibility) in a sedimentary sequence can be used to detect astronomically forced global climate cycles, leading to the obtention of a high-detailed chronostratigraphy for this sequence.
With this Special Issue, we want to collect original papers from researchers in paleomagnetism and rock magnetism that illustrate the possible applications of paleomagnetism and rock magnetism in geochronology.
Dr. Matteo Maron
Guest Editor
Manuscript Submission Information
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Keywords
- magnetostratigraphy applied to geochronology
- paleomagnetism and rock magnetism of stratigraphic/volcanic sequences
- improvement of the geomagnetic polarity time scale
- paleointensity variations of the geomagnetic field as a correlation tool
- rock magnetism parameters describing astronomical cycles
