List of radiometric dating techniques
Dr Johnson's significant contributions to Geoscience Australia include overseeing the development of the current 0 million Exploring for the Future Programme.
He also shepherded the million Onshore Energy Security Program (2006-2011); which discovered a new sedimentary basin with energy hosting potential in north Queensland, produced the first national radiometric map of Australia, and resulted in an estimated additional 0 million industry exploration expenditure during the life of the program.
The C14 technique has been and continues to be applied and used in many, many different fields including hydrology, atmospheric science, oceanography, geology, palaeoclimatology, archaeology and biomedicine.
There are three principal isotopes of carbon which occur naturally - C12, C13 (both stable) and C14 (unstable or radioactive).
Dr Johnson said he is "greatly indebted to Dr Pigram for his excellent leadership over the past six years, positioning Geoscience Australia as a respected organisation that delivers value to Australia, as well as developing the organisation as an inclusive workplace."An early priority for Dr Johnson is to meet with Geoscience Australia's key stakeholders in the private and public sectors, across the broad range of geoscience disciplines in which we work, to deepen his understanding of our stakeholders' needs when it comes to geoscience knowledge and capability.
The African Women’s Development Fund (AWDF) is a grantmaking foundation that supports local, national and regional women’s organizations working towards the empowerment of African women and the promotion and realization of their rights.
He has also been Geoscience Australia's Deputy CEO for the past six years.These isotopes are present in the following amounts C12 - 98.89%, C13 - 1.11% and C14 - 0.00000000010%.Thus, one carbon 14 atom exists in nature for every 1,000,000,000,000 C12 atoms in living material.In accepting the role, Dr Johnson said "I am excited by the opportunity to work with Geoscience Australia's knowledgeable and passionate experts to shape the future directions of the organisation to deliver benefits to the nation."Dr Johnson was selected after an extensive global search that sought to identify a new CEO to build on Geoscience Australia's existing strong position as the nation's trusted advisor on the geology and geography of Australia.Dr Johnson replaces Dr Chris Pigram, the CEO from 2011 to 2016.