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 The digital data supplied in this open file is under crown
copyright.  It is supplied on the understanding that it is for the
sole use of the purchaser, and will not be redistributed in any
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liability for the data.  Any use and interpretation is solely the
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software in the documentation, and/or any use of proprietary data
formats in this release does not constitute endorsement by the GSC
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answer questions concerning the data, there is no guaranteed level
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Format

Data and text are provided in both ASCII and Word Perferct  5.1
formats.  The reported parameters are as follows:

Depth:    Integer format (I5) Depth as labelled on the original
     sample, usually in metres (but occassionally in feet for older
     sample sets) from the drill rig kelly bushing (typically a few
     metres above ground elevation of the drill site).  9107, 9108
     are Institute of Sedimentary and Petroleum Geology internal
     standard samples; 55555 is an international standard; 1 is
     used in the depth field for a blank analysis.

TOC:      Floating point format (F5.2)  Total Organic Carbon
     content expressed as per cent by weight as measured by the
     Rock-Eval/TOC pyrolysis apparatus.  Values of 99.99 are used
     to indicate no data are available but prevent "divide by zero"
     errors in ratio parameters with TOC in the denominator.

PI:       Floating point format (F4.2) Production Index =
     S1/(S1+S2).  Maturity, staining, migration indicator.

S1+S2:    Floating point format (F6.2) numerical sum of S1 plus S2.
     Total hydrocarbon product indicator.

Tmax:     Integer format (I3) Temperature at the S2 maximum. 
     Maturity indicator.

S1:       Floating point format (F6.2) hydrocarbon peak (mg
     hydrocarbon per gram rock) released during initial hold at
     300低.  Indigenous or stained hydrocarbon indicator.

S2:       Floating point format (F6.2) hydrocarbon peak (mg
     hydrocarbon per gram rock) released during ramped pyrolysis
     (300低 to 600低 at 25低/minute).  Hydrocarbon generation
     potential indicator.

S3:       Floating point format (F6.2) organic carbon dioxide peak
     (mg CO2/ g rock) released during initial hold at 300低 and
     ramped heating to 390低.  Indicator of organically bound
     oxygen in the kerogen.

HI:       Integer format (I4) Hydrogen Index = 100 * S2/TOC. 
     Organic matter type indicator.

OI:       Integer format (I4) Oxygen Index = 100 * S3/TOC. Organic
     matter type indicator.


Lloyd R. Snowdon
Geological Survey of Canada
Institute of Sedimentary and Petroleum Geology
3303 - 33 Street N.W. Calgary, Alberta
Canada T2L 2A7

phone:    (403) 292-7035
fax:      (403) 292-5377
internet: snowdon@gsc.emr.ca