Record series
Geophysical Logs
VPRS 19436
1953 - 1998
Open
North Melbourne
Agencies
This record series was created by:
Geological Survey of Victoria ( VA4118 ): 1953 - 1998
Agencies responsible for this record series: Geological Survey of Victoria ( VA 4118 ): 2022 - present
Date Range
Series date range: 1953 - 1998
Series in custody:
1953 - 1998
Contents in custody:
1953 - 1998
Function / Content
This series contains records of geophysical well-logging undertaken and/or maintained by the Geological Survey of Victoria (VA 4118).Geophysical well-logging, also called borehole logging, is a technique used to gather data about subsurface conditions and geophysical characteristics of the surrounding area. The logs are created by conducting measurements at intervals within boreholes or wells drilled into the surface of the Earth. The data collected through these logs may be used for determining hydrogeological units, ground-water quality, and oil and gas research. It is thus a valuable tool enabling geoscientists, engineers, and researchers to make informed decisions regarding resource exploration, construction planning, and environmental assessments.
This type of well-logging is distinguished from geological well-logging, with the latter referring to the visual inspection of the drilled cores brought to the surface. However, the intent of the two types of well-logging is the same: to determine the structure and composition of the geologic rock layers surrounding the borehole.
There are various logging techniques used to capture data and information regarding the geophysical behaviour of the borehole. Two commonly used methods are Gamma Ray Logging, which measures natural gamma radiation emitted by rock formations and aids in lithological identification and stratigraphic correlation; and Resistivity Logging, which determines the electrical resistivity of subsurface materials, helping to differentiate between different rock types and identify zones of interest.
How to use the records
Browse files by location, bore number and/or site-id, if known, to identify individual records.Note that due to the nature of these records, logs for individual wells cannot be ordered individually. You will instead be provided with the relevant container in which it is housed.
Recordkeeping system
The records are arranged in alphabetical order by well, which is identified by Parish name and bore number, and which also has an assigned site-id per bore.The data logs for each well are rolled together in individual boxes, with the number of logs per well varying greatly.
Before coming into the custody of Public Record Office Victoria, this series was held at the Geological Survey of Victoria (GSV) Drill Core Library at Werribee.
