PALEOMAGNETIC, ANISOTROPY OF MAGNETIC SUSCEPTIBILITY, AND STRUCTURAL DATA BEARING ON MAGMA EMPLACEMENT AND THE GROWTH OF A MIOCENE, CINDER CONE

Assessing volcanic hazards is best done by understanding the formation conditions of current and past activity within the area. The Trosky Volcano is a cinder-spatter cone associated with the middle Miocene Jičín Volcanic field of northeast Czech Republic. The intent of this research is to map the subvolcanic deformation, magma plumbing system geometries, eruptive dynamics, and cinder cone morphology using paleomagnetic, anisotropy of magnetic susceptibility (AMS), and structural data at the Trosky Volcano. The results from this study will be used to compare and contrast three other monogenic volcanoes that exhibit exposed magma feeders systems. We hypothesize that cinder cones conceal multiple magma conduits as opposed to a single conduit as envisioned for many volcanic studies. By comparing the results from three other monogenic volcanic centers 1) Cienega Volcano, NM, 2) several quarried volcanoes in the Raton-Clayton volcanic field, NM, (future study) and 3) Lemptégy Volcano, France to the data from the Trosky Volcano should enhance our understanding of both ancient and active intra-rift volcanic systems. Preliminary results are encouraging with high values of magnetic susceptibility, single component demagnetization response, and pseudosingle domain grain size. The data obtained will enhance our understanding of subsurface magma transport to the eruptive vent and provide insight into subvolcanic deformation processes. These data should further allow us to provide insight into the growth and hazards associated with active volcanic systems worldwide.