Dataset Listing

Shale Hills - Geophysics - Gamma Ray Logs (2010)

Level 0 - Raw Data

Variables:  Depth (m), Count (cps)

Standard Variables:  Counter|Depth

Date Range:  (2010-2010)

Dataset Creators/Authors:  Singha, Kamini

Contact:  Dr. Kamini Singha, Associate Professor, Hydrologic Sciences and Engineering Program, Colorado School of Mines, 1516 Illinois Street, 311E Berthoud Hall, Golden, CO 80401, (303) 273-3822,

Field Area:   Susquehanna Shale Hills Critical Zone Observatory

Keywords & XML
  • Description

    Natural gamma ray logs are indicating the concentration of thorium (Th), uranium (U), and potassium (K) in the rocks surrounding a borehole and they are a measurement of the natural radioactivity of the formation. The energy of the gamma-rays (photons) differs for Th, U, and
    K. Potassium emits only gamma photons of energy 1.46 MeV. Thorium emits gamma photons of a number of different energies, the highest of which is 2.62 MeV. Uranium similarly emits gamma photons of a number of different energies with 1.76 MeV as the highest energy that can be detected in a borehole. Here the values indicate total gamma ray energy and are function of well depth.
    Wire-line logging: The natural gamma log system consists of a gamma ray detecting probe, geophysical logging cable and a digital counter instrument. It is done by lowering the probe down the drill hole and recoding the gamma radiation variation (in count-per-second) with depth (in meters). Two data sets for each well: Down and Up. Down: From top of the well to bottom of the well. Up: From bottom of the well to top of the well. Depth in meters in first column and gamma radiation variations in count-per-second in the second column.
  • Keywords

    natural gamma ray logging, CZMW bore wells, GP bore-wells, potassium concentration, uranium concentration, thorium concentration

    XML Metadata

    XML is in ISO-19115 geographic metadata format, compatible with ESRI Geoportal Server.

  • Citation for This Dataset

    The following acknowledgment should accompany any publication or citation of these data: Logistical support and/or data were provided by the NSF-supported Shale Hills Susquehanna Critical Zone Observatory.

    Citation for This Webpage

    Singha, Kamini (2010). "CZO Dataset: Shale Hills - Geophysics (2010) - Gamma Ray Logs." Retrieved 17 Feb 2020, from


Shale Hills - Gamma Ray Logs - 2010

(.zip)   Data Level 0,  Metadata

Data Use Policy
Data Sharing Policy
  • Data Use Policy

    DRAFT v.0.4.0

    1. Use our data freely. All CZO Data Products* except those labelled Private** are released to the public and may be freely copied, distributed, edited, remixed, and built upon under the condition that you give acknowledgement as described below. Non-CZO data products — like those produced by USGS or NOAA — have their own use policies, which should be followed.

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