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Grid Images - Horizon Data (BHP) Hydrocarbon Migration and Seepage in the Timor Sea and Browse Basin. An Integrated SAR and Geological Study GIS.

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

Dataset citation

ANZLIC unique identifier: ANZCW0703003370

Title: Grid Images - Horizon Data (BHP) Hydrocarbon Migration and Seepage in the Timor Sea and Browse Basin. An Integrated SAR and Geological Study GIS.


Custodian: Geoscience Australia

Jurisdiction: Australia



This seismic interpretated data was originally from BHP. The original data was interpretated from a BHP 3D survey over their selected permit area, the survey was called "HV11". The data was then given to AGSO for extra project purposes. AGSO has full right to this data.

The history of the data before it arrived in AGSO is unknown.

All the data is in raster format and displays the interpetated grids from the survey. They are all time structure grids.

ANZLIC search words:

  • ENERGY Petroleum Exploration
  • GEOSCIENCES Geology Mapping
  • INDUSTRY Surveys
  • MARINE Maps

Spatial domain:

locality map

Geographic extent name: AUSTRALIA INCLUDING EXTERNAL TERRITORIES - AUSAAT - Australia - Australia

Geographic extent polygon: 121 -8.7, 127.5 -8.7, 127.5 -17, 121 -17, 121 -8.7,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:
North bounding latitude: -8.7 °
South bounding latitude: -17 °
East bounding longitude: 127.5 °
West bounding longitude: 121 °

Data currency

Beginning date: 2000-07-01

Ending date: 2000-11-05

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Stored data format:
DIGITAL - bil Band interleaved by line (BIL) image Geographic WGS84
Available format type:
DIGITAL - bil Band interleaved by line (BIL) image Geographic WGS84

Access constraints:

Licence required

Free Data Download

Data quality


The original data was imported into ERMAPPER format. Where there were converted into a format that ARCVIEW could read, BIL files. In ERMAPPER the grids where modified only by there colour spread. The colour table used for all grids was, 'rainbow_reversed'.

There BIL images represents the depth in two-way-time (TWT) of selected interpretated horizons. They can only be used for general usage, for they have no data attached to them, they are only georeferenced images. All images have been given the 3-D look, this has only been done for asthetic looks.

Positional accuracy:

Because the data come from an external source the data should only be reprented at a scale greater than 1:1000000. Any lower than that might distort the accuracy levels.

All the raster images have a cell size of 20m. After the georeferencing of the images in ERMAPPER a positional accuracy can be 'estimated' within 50m. Each raster BIL file has a 'hdr' file. This is used to georeference the raster image.

Attribute accuracy:

This naming of the horizons was up to the interpreter in BHP and is therefore not prone to any error.

The classification of the horizon names are as follows:

All 'original' values were in two-way time (TWT).

32amp - Amplitude (32)

bmio - Base Miocene

call - Callovian

itri - Intra Triassic

ival - Intra Valanginian

ljur - Late Jurassic

lvel - Intra

sant -

tcre - Top Cretaceous

teoc - Top Eocene

tlc - Top Late Cretaceous

tpal - Top Paleocene

trow - Top Rowley Shoals

wb - Water Bottom

Logical Consistency:

All raster data has been visually checked for extraneous points and value added data.


All raster data and details are complete and verified.

Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address:

Metadata information

Metadata date: 2013-03-08

Additional metadata

Metadata reference XHTML:

Metadata reference XML:

All raster data is part of the:

Hydrocarbon Migration and Seepage in the Timor Sea and North Browse Basin, Northwest Shelf, Australia: An Intergrated SAR and Geological Study.



Datum WGS84

Units DD

Authors:O'Brien, G. Webster, M.