Final report, intermediate-depth, hole No. 1-78-U1, Socorro Prospect, New Mexico

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During the period May 19, 1977 to July 22, 1977, fourteen heat flow boreholes were completed on the Socorro Prospect, New Mexico. Rock types encountered ranged from unconsolidated Quaternary alluvium to dense volcanic rocks. Depths of the holes were from 60 to 440 feet with an average total depth of 288 feet. Geothermal gradients from the fourteen boreholes ranged from 0.32 to 7.58 F/100 ft. Thermal conductivity values of 3.6 to 7.5 mcal/cm-sec C were obtained from a total of 76 samples of drill cuttings. Individual heat flow values range from 0.3 to 5.4 HFU (1 HFU-1 {micro}cal/cm{sup 2}-sec). The ... continued below

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Quiett, Steve & Combs, Jim November 1, 1977.

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Description

During the period May 19, 1977 to July 22, 1977, fourteen heat flow boreholes were completed on the Socorro Prospect, New Mexico. Rock types encountered ranged from unconsolidated Quaternary alluvium to dense volcanic rocks. Depths of the holes were from 60 to 440 feet with an average total depth of 288 feet. Geothermal gradients from the fourteen boreholes ranged from 0.32 to 7.58 F/100 ft. Thermal conductivity values of 3.6 to 7.5 mcal/cm-sec C were obtained from a total of 76 samples of drill cuttings. Individual heat flow values range from 0.3 to 5.4 HFU (1 HFU-1 {micro}cal/cm{sup 2}-sec). The linearity of the gradients for these holes suggests that heat transport in the shallow subsurface penetrated by these boreholes is predominantly by conduction; however, the magnitude of the heat flow for eight of the boreholes indicates that they are disturbed by groundwater movement. Based on published data as well as the results of the present survey, a value of about 2.5 HFU is probably representative of the background heat flow in the area of the Socorro Prospect. The heat flow determination of 5.4 HFU in borehole No. 5-77-B20 could indicate a prospect of commercial quality. Heat flow values greater than 3 HFU require either melting within the shallow crust or convective transport of heat by water or magma. This heat flow value, therefore, supports the observation of modern uplift in the Socorro area over a postulated magma chamber situated at a depth of 11 {+-} miles. Based on the data collected during this exploration project, they recommend that a second phase program of more closely-spaced heat flow boreholes be drilled on the Socorro Prospect to determine the lateral extent of the high heat flow zone characterized by hole No. 5-77-B20.

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  • Report No.: GTS JOB NO. 5-77
  • Grant Number: None
  • DOI: 10.2172/894943 | External Link
  • Office of Scientific & Technical Information Report Number: 894943
  • Archival Resource Key: ark:/67531/metadc890669

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • November 1, 1977

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Oct. 28, 2016, 4:25 p.m.

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Quiett, Steve & Combs, Jim. Final report, intermediate-depth, hole No. 1-78-U1, Socorro Prospect, New Mexico, report, November 1, 1977; United States. (digital.library.unt.edu/ark:/67531/metadc890669/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.