430
I. Lerche· S. Cao . S. Mallory· K. Petersen . A. Lowrie
soo
... TUNALI!,
KUGRUA
o
rEARD
1.000
D S. MEADE
\.... CALCULATED Cur.V[
1,500
2,000
-
l.iOO
,.
~
),000
3.;00
_.000
' • .100
MOO
0.0
0.;
1.0
L.i
2.0
:!J.
3.Q
3..)
. , J .G
4,.)
~,O
VITRI"lTE REFLECTANCE ('"')
5.0- , - - - - - - - - - - - - - - - - - - - - - , - 5.0
0.0-',--- - - , - - - - , - - - - . - - - - , . - - - - - - - 1- 0.0
150.0
200 °
ISO °
lodo
\0.0
0.0
Gcologicnl Time (MnfiP)
Fig.2 Predicted "best fit"
vitrinite reflectance for the
four wells in the northwest
NPRA
Fig.3 Modeled "best" paleoheat flux for the four wells in
the northwest NPRA.
We then followed the cumulative probability (Lerche 1991) procedure laid out
elsewhere. Presented in Fig. 4 are the observed vitrinite reflectance measurements with depth with superposed cumulative probability curves based on the
three paleoheat flux estimates described above. Inspection of Fig. 4 suggests that