FIRST STAGE IN THE CONSTRUCTION OF A MAP OF GEOTHERMAL PROVINCES FOR MEXICO
The activities carried out to date are as follows: 1) search of bibliographical information on thermal manifestations (underground water wells and springs) from primary sources. 2) Review, evaluation and processing of the database. 3) Integration and processing of useful maps for the provincial map design. 4) Application of the data integration model: Boolean algebra (BA) and overlay analysis (OA) models.
Much of the information that emitted instances consulted lacks the date of collection of the sample, and does not report the ambient temperature. For this reason, it is necessary to carry out the analysis of the historical record of temperature of the meteorological stations (for a period from 1951 to 2010) to propose a local ambient temperature as a point of reference for the classification of each of the points of discharge of groundwater in thermal and cold waters. For this, three reference temperatures were set: 1) Average annual temperature (AAT) 2) Maximum temperature of the warmest month (MTWM). 3) Average annual maximum temperature (AAMT).
With all the results obtained, geothermal zones will be located from: 1) Identify permeable areas defined by faults and fractures. 2) Delimit areas with lithology that have ages less than or equal to 5 million years. 3) Identify zones of hydrothermal alterations. 4) Identify zones of magnetic anomalies. 5) Define the reservoir temperature using the chalcedony silica geothermometer to estimate the heat flow.