Horizontal Faults as Potential Aquifers in the Department of Florida Part One
Thrust-fault Paleoproterozoic Castro Creek
DOI:
https://doi.org/10.31285/AGRO.15.596Keywords:
thrust-faults, pegmatites, Proterozoic, horizontal laminationAbstract
Since 1996 Bossi and Piñeyro proposed the posibility of subhorizontal contacts between Piedra Alta geological units with very different metamorphic grade and lithological associations. The idea was discarded in an itinerant workshop because of lacking of mylonites in the proposed planes containing pegmatites and/or muscovite granites of very low dipping. The possibility that peraluminous magma acted as a lubricant and allow significant movements without great efforts led to rework the topic, utilizing 850 observations of the «Vulcanitas Arqueanas Project» and 750 observations of the «Terreno Piedra Alta Project». Georeferenced observations were located on 1:50,000 topographic maps and areas with higher density were aerophotointerpreted at 1:40,000 scale and geologically surveyed at different scales.The thrust-fault of Florida «granite belt» over San Jose belt was confirmed, and a new thrust-fault was found in the Arroyo Castro valley with 2% dipping to the north.
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