Anisotropy of magnetic susceptibility (AMS) and rock magnetic data for Pachmarhi dyke swarm of Deccan

The Pachmarhi dyke swarms, situated in the Eastern part of the Narmada-Satpura-Tapi (N-S-T) dykes of the Deccan Continental Flood Basalt (DCFB), are studied using the Anisotropy of Magnetic Susceptibility (AMS) technique. Here, we determine the direction and sense of magma flow within the dykes to gain insights into the depth, number, and location of magma chambers, as well as the geodynamics of their plumbing system. Petrography and rock magnetism analyses revealed high-titanium magnetite particles, predominantly of Pseudo-Single Domain (PSD) nature, with a smaller proportion of Multi-Domain (MD) grains. We identified four distinct magnetic fabric types (I-IV) within the Pachmarhi dykes. The imbrication of magnetic foliation (for oblate fabric) and magnetic lineation (for prolate fabric) has been employed to discern the direction of magma flow which revealed multiple trends of magma flow, ranging from vertical/sub-vertical to inclined, with one particular dyke exhibiting lateral flow. ..., The Anisotropy of Magnetic Susceptibility (AMS) data were acquired from AGICO-made MFK2-FA Kappabridge instrument and data was analysed from Anisoft software (version 5.1.08.) by AGICO, Inc, Brno, Czech Republic (https://agico.cz/text/software/anisoft/anisoft.php ). The AMS data contains orientation of principal susceptibility axes (k1,k2,k3) along with shape parameter (T) and degree of anisotropy (p') etc. The research is motivated to decipher the magma flow pattern in these dykes, whether they were directly related to Reunion hotspot or fed by the fissures.
The Rock Magnetic data were acquired from SQUID-VSM at IISER Bhopal and analysed from RockMag Analyzer 1.1 software by Leonhardt, 2006 (http://earthref.org/tools/rockmaganalyzer/ )., , # Anisotropy of magnetic susceptibility (AMS) and rock magnetic data for Pachmarhi dyke swarm of Deccan

[https://doi.org/10.5061/dryad.2fqz612xf](https://doi.org/10.5061/dryad.2fqz612xf)

## Description of the data and file structure

Anisotropy of Magnetic Susceptibility (AMS) data and Rock magnetic data (i.e. including coercivity and remanence) of the Pachmarhi dyke samples of the Deccan Trap:

* The table with AMS data of Pachmarhi dykes has the following parameters: Km = Mean Susceptibility, T= Shape Parameter, P'= Degree of Anisotropy, D= Declination, I= Inclination, JCE = Jelinek Confidence ellipse parameters.
* The rock magnetic data has magnetic remanence and coercivity values for the dyke samples. The hysteresis magnetic parameters includes saturation remanence magnetization (Mrs), saturation magnetization (Ms), coercivity remanence (Hcr), and coercive force (Hc).

## Sharing/Access information

Data was derived from the following sources:

* The AMS of core samples of ...