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Depth interval: IODP-385-U1548D

IODP-385-U1548D - Depth interval #

A heat flow depth interval is a vertical depth interval within the Earth's subsurface, defined by top and bottom depth measurements, over which temperature measurements are taken to determine the terrestrial heat flow at a given location. This interval is used to assess the rate at which heat is conducted from the Earth's interior to the surface. The depth interval is characterized by its vertical extent, which allows for the analysis of temperature gradients and the calculation of heat flux. This data is crucial for understanding geothermal gradients, heat transfer processes, and the thermal structure of the Earth's crust at that location.

Top
34.80 m
Bottom
105.80 m
Vertical Depth
71.00 m
Vertical Datum
Mean Sea Level
Lithology
Basalt;  Sediment
Geologic Age
Late Pleistocene
Stratigraphy

Measurements

Heat Flow
271.08 mW/m²
Uncertainty
32.40 mW/m²
Temperature Gradient
Thermal Conductivity
Method
Bullard method
Expedition/Platform/Ship
D/V JOIDES Resolution
Probe Type
-
Probe Length
–
Probe Penetration
–
Probe Tilt
–
Comment

None

Mean Thermal Conductivity
0.78 W/mK
Uncertainty
0.04 W/mK
Method
Lab - line source / full space
Averaging Methodology
Random or periodic depth sampling
Source
Core samples
Saturation State
Recovered
Pt Conditions
Corrected in-situ (pT)
Pt Function
-

Thermal Gradient
289.44 K/km
Uncertainty
–
Corrected Gradient
–
Corrected Uncertainty
–
Method (Top)
ODTT-PC
Method (Bottom)
ODTT-PC
Shut-In Time (Top)
–
Shut-In Time (Bottom)
–
Correction Method (Top)
-
Correction Method (Bottom)
-
Number Of Temperature Recordings
3