HUN Deep Wells Biomarkers v01

## **Abstract** 

The dataset was derived by the Bioregional Assessment Programme from a well completion reports dataset. The source dataset is identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement. 



The dataset consists of shapefiles indicating the location and depth of well markers used to build the geological model for the Hunter subregion. The well markers show significant biological features in the rock formation that represent key indicators to the nature of the formation. Biomarkers are a group of compounds, primarily hydrocarbons, found in oils, rock extracts, recent sediment extracts, and soil extracts. When samples of oil and candidate source rocks are available, biomarkers can be used to make oil-source rock correlations which aid geologists in determining the age, history of and stratigraphy of the formations from drill logs and samples taken from various depths during the exploration phase.

## **Purpose** 

For display on HUN 2.12 geological figures (at the time of this metadata creation figures 002, 004 and 006)

## **Dataset History** 

Location data for the well sites and the biomarklers identified in this dataset has been sourced from well completion reports. The dataset has been exported from RMS geological modelling software as a .dat files. These have been converted to a shapefiles for the various wells and depths using ArcGIS.



The naming convention refers to the geological age and depth (TVD ss = total vertical depth subsea reported to the Australian Height Datum) of the various formations as follows:



Regional horizon name 	Age (geological stage)	Newcastle Coalfield	                                Hunter Coalfield	                    Western Coalfield	                        Central or Southern coalfields 



M600	                       Top Anisian	                Top Hawkesbury Sandstone	                Top Hawkesbury Sandstone	    Top Hawkesbury Sandstone	Base Wianamatta Group

M700	                       Top Olenekian	                Base Hawkesbury Sandstone	                Base Hawkesbury Sandstone	    Base Hawkesbury Sandstone	Base Hawkesbury Sandstone

P000	                       Top Changhsingian	        Base Narrabeen Group	                        Base Narrabeen Group	            Base Narrabeen Group	                Base Narrabeen Group

P100	                       Upper Wuchiapingian	Base Newcastle Coal Measures	        Base Newcastle Coal Measures   Top Watts Sandstone	                Top Bargo Claystone

P500	                       Mid Capitanian	                Base Tomago Coal Measures	                Base Wittingham Coal Measures  Base Illawarra Coal Measures	Base Illawarra Coal Measures

P550	                       Top Wordian	                Base Mulbring Siltstone	                        Base Mulbring Siltstone	            Base Berry Siltstone	                Base Berry Siltstone

P600	                       Mid Roadian	                Base Maitland Group	                        Base Maitland Group	            Base Shoalhaven Group	        Base Shoalhaven Group

P700	                       Upper Kungurian	        Top Base Greta Coal Measures	        Top Base Greta Coal Measures		

P900	                       Base Serpukhovian	        Base Seaham Formation	                        Base Seaham Formation		



with 'M' referring to Mesozoic and 'P' to Paleozoic

## **Dataset Citation** 

Bioregional Assessment Programme (2015) HUN Deep Wells Biomarkers v01. Bioregional Assessment Derived Dataset. Viewed 22 June 2018, http://data.bioregionalassessments.gov.au/dataset/24dc9764-79bc-4887-9b47-0f1206f9b8da.

## **Dataset Ancestors** 

* **Derived From** [Hunter deep well completion reports](https://data.gov.au/data/dataset/f2df86d5-6749-48c7-a445-d60067109f08)



Tags: Hunter subregion, New South Wales, economy, geoscientificInformation
Organization: Bioregional Assessment Program