VLF-EM Images for the Cobequid Highlands, Nova Scotia

DP ME 113, Version 2, 2006. Airborne VLF-EM Orthogonal Total Field Images Collectively Covering Parts of NTS Sheets 11E/05, 11E/06, 11E/07, 11E/10, 11E/11, 11E/12, 21H/07, 21H/08, 21H/09 and 21H/10, TGI-2 Project, Cobequid Highlands, Nova Scotia


This data set consists of one TIFF image, one JPEG image, and 9 PDF Open File Maps of airborne VLF-EM ortho total field data covering most of the Cobequid Highlands in northern Nova Scotia and part of the TGI-2 project area.

Airborne geophysical data used to generate these images were supplied by the Geological Survey of Canada (GSC) - Geophysical Data Centre, 615 Booth St., Ottawa, Ontario, K1A 0E9. This high-resolution VLF-EM data was digitally acquired as part of the Parrsboro Survey (GSC Project #189).

The data used to produce this image is the de-corrugated measured total field response using the "Orthogonal" transmitter. The "Orthogonal" transmitter for GSC Project #189 is Cutler, Maine. Total field VLF-EM data provide a measure of the internal electrical character (i. e. resistivity / conductivity) of the underlying Quaternary and bedrock geology.


The information on the PDF map comes from a variety of government and non-government sources. NSDNR accepts no liability for any errors or deficiencies on this map. This map should not be used for legal purposes.

The PDF map is intended for use at the published scale of 1:50 000.

The DATA is provided to the USER on an "as is" basis, without warranties of any kind, express or implied. The entire risk as to the quality and accuracy of the DATA is with the USER and the USER shall use his/her own judgment in making use of the DATA or drawing conclusions based upon it. DNR shall not be liable to the USER, his/her clients, servants, agents, contractors, assigns, or to any other person for any loss or damage of any kind including personal injury or death arising from the use of the DATA or accompanying written materials, or from errors, deficiencies or faults therein, whether such damage is caused by negligence or otherwise. If errors or omissions are found in the DATA, the USER will notify DNR. The terms and conditions of the license accompany the downloaded digital product.

A Sample VLF-EM Image

(Sample image - Click to view details in a smaller area )

Sample Image

Format and Projection


Portable Document Format (PDF), Tag Image File Format (TIFF), Joint Photographic Experts Group (JPEG) and TXT files compressed in self-extracting EXE/ZIP files (more information on data formats)


PDF - 2.6 to 7.2 Mb (compressed), 2.8 to 8.1 MB (uncompressed)
TIFF - 8.9 MB (compressed), 34.0 MB (uncompressed)
JPEG - 2.2 MB (compressed), 2.3 MB (uncompressed)


The TIFF and JPEG images, are in six-degree Universal Transverse Mercator (UTM) projection, Zone 20, Central Meridian 63° 00' West using the North American Datum of 1983 (NAD83).

The PDF maps are are in six-degree Universal Transverse Mercator (UTM) projection, Zone 20, Central Meridian 63° 00' West using the North American Datum of 1927 (NAD27).

Downloading Instructions

The data files have been compressed using PKZIP into a single, self-extracting EXE file.

  1. Read the Licence before accepting the data.
  2. Download the self-extracting EXE file to the desired location on your hard drive.
  3. Double click or "RUN" the EXE file and the data files will be unzipped automatically.

The EXE file can also be opened in WinZip to view and extract the compressed files in the data set.

On UNIX platforms, the unzip command will extract the compressed files in the EXE.

A readme file and a copy of the licence agreement are also included with each data set.

Download Digital Data Set DP ME 113