PETLAB: a National Geoanalytical Database l content l accessibility l uranium l summary Nick Mortimer & Ben Morrison, GNS Dunedin

PET database history NZGS/GNS “P” rock collection catalogue a.k.a. PET database collector, location, rock type, sample type etc data Year National Petrology Reference Collection n o. o f s a m p l e s Ledgers Punched cards Basis Oracle

PETLAB current content permanent and accessible archive rock & mineral analyses, investigator, method, laboratory etc Geochemical data e.g. SiO 2, As, Cr Petrophysical data e.g. mag suscep Volumetric data e.g. % qtz, plag Isotopic data e.g. O, Sr, Pb ratios Age calculations e.g. U-Pb, T DM Sample PET data wr = 3877 min = 451 n = 379 n = 269 n = 353

PETLAB non-GNS content PETLAB can now take any NZ rock & mineral analyses no compromise on data quality (e.g. grid references) negotiate appropriate multi-institutional data access/entry GNSOUUCVUWRother no. PETLAB samples Samples by institution n=67162

PETLAB accessibility www Access desktop application ArcView Excel coming in 2003 Rest of the World

PETLAB desktop: data in Excel template

PETLAB desktop: data out

PETLAB intranet/web

PETLAB example: NZ uranium Uranium important for a number of reasons: l geophysics: gamma radiometric surveys; heat flow l mineral prospectivity: pathfinder element l environment: radon, groundwater, baselines l geological & geochronological interest

PETLAB uranium PETLAB records of whole rock U analyses: n = 3102

PETLAB uranium U <=1 ppm n = 1061 U >5 ppm n = 144 U >20 ppm n = 18 U >1000 ppm n = 2 integrate with QMAP database to make geochemical maps

PETLAB summary l permanent, growing database of NZ rocks & rock analyses l integrates scattered geochemical, volumetric, isotopic & petrophysical datasets into a common structure l data input & output as simple as possible l a tool that enhances research & commercial work

PETLAB: future l add data security feature l PETLAB searchable via web in 2003 l improve national coverage as project work demands l involve NZ universities, CRIs in PETLAB l use PETLAB in environmental, non-geo applications l useful & visible GNS contribution to the science community More info: