Lead isotope data bank; 2,624 samples and analyses cited

The Lead Isotope Data Bank (LIDB) was initiated to facilitate plotting data.
Therefore, the Bank reflects data most often used in plotting rather than
comprises a comprehensive tabulation of lead isotope data. Up until now,
plotting was done using card decks processed by computer with tapes plotted
by a Gerber plotter and more recently a CRT using a batch mode. Lack of a
uniform format for sample identification was not a great impediment. With
increase in the size of the bank, hand sorting is becoming prohibitive and ·plans are underway to put the bank into a uniform format on DISK with a card
backup so that it may be accessed by use of IRIS on the DECK 10 computer at the
U.S.G.S. facility in Denver. Plots will be constructed on a CRT. Entry of the
bank into the IRIS accessing program is scheduled for completion in FY 1976