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Table 3 Temperature and time intervals for calculating the time-temperature index

From: Real-time drilling mud gas monitoring for qualitative evaluation of hydrocarbon gas composition during deep sea drilling in the Nankai Trough Kumano Basin

Temp. interval (°C)

r n

δt (Ma)

Interval TTI

Total TTI

0 - 10

2−10

0.53

0.0005

0.0005

10 - 20

2−9

0.76

0.0015

0.0020

20 - 30

2−8

0.76

0.0030

0.0050

30 - 40

2−7

0.76

0.0059

0.0109

40 - 50

2−6

0.76

0.0119

0.0228

50 - 60

2−5

0.76

0.0237

0.0465

60 - 70

2−4

0.76

0.0475

0.0940

70 - 80

2−3

0.76

0.0949

0.1889

80 - 82

2−2

0.15

0.0380

0.2269

  1. Overview of the different temperature and time intervals for which a time-temperature index (TTI) was calculated. “Interval TTI” denotes the TTI for an individual temperature interval, whereas “cumulative TTI” is the sum of the interval TTIs. See text for explanations.
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Geochemical Transactions

ISSN: 1467-4866

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