Site U1540

Abstract

In this report the geothermal measurements made with temperature probes on the JOIDES Resolution during legs 101-180 are reanalyzed in a standard systematic manner. Sediment temperatures were measured on 53 of the first 80 Ocean Drilling Project Legs. 205 of the 475 sites have reliable data. For 22% of sites with reliable values, however, heat flow data were not reported in the Initial Results volumes. A total of 993 reliable temperature measurements yields an average of 4.8 measurements per site. Most temperature measurements were between 20 to 250 mbsf, and the deepest depth in this study is 550 mbsf. Available thermal conductivity data for these 205 sites were corrected for in-situ conditions. Heat flow values, calculated using the Bullard method, range from 5 mW m -2 to 13 W m -2 . Temperature, thermal conductivity, and heat flow data presented in this report are available from the included CD.