Magnetotelluric Resistivity Section And Physical Implications Through The Telaga Bodas Magmatic Geothermal System, Indonesia

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Conference Paper: Magnetotelluric Resistivity Section And Physical Implications Through The Telaga Bodas Magmatic Geothermal System, Indonesia

Abstract
A magnetotelluric (MT) profile of 47 sites aligned E-W across the southern Karaha-Telaga Bodas magmatic andesitic geothermal system has been inverted using a two-dimensional regularized inversion program to yield a detailed resistivity section in the upper 5 km. Principal features of the model include a pronounced alteration blanket thickening laterally in both directions from the center, a resistive horst-like structure at middle levels believed due to higher-grade propyllitic alteration, and a subvertical conductive structure within the prior resistive volume. The last feature listed is interpreted to represent a magmatic chimney caused by advanced argillic alteration assemblages formed from interactions between magmatic sulfur dioxide and the surrounding geothermal waters. The resistivity profile suggests gases migrating upward from a cooling intrusion.

Authors 
Philip E. Wannamaker, I. Raharjo, J. N. Moore and R. Allis








Published 
GRC, 2004





DOI 
Not Provided
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Citation

Philip E. Wannamaker,I. Raharjo,J. N. Moore,R. Allis. 2004. Magnetotelluric Resistivity Section And Physical Implications Through The Telaga Bodas Magmatic Geothermal System, Indonesia. In: (!) ; (!) ; (!) . (!) : GRC; p. (!)