Journal of Petroleum Geology, Vol.8,
No.2, pp. 233-240, 1985
©Copyright 2000 Scientific Press,
Ltd.
GEOLOGIC TIME AS A
PARAMETER IN ORGANIC METAMORPHISM AND VITRINITE REFLECTANCE AS AN
ABSOLUTE PALEOGEOTHERMOMETER: REPLY
Leigh C. Price*
* U.S. Geological Survey, Denver
Federal Center, PO Box 25046, MS 940 Denver, CO 80225.
Before replying to James Kohsmann's
discussion of the Price (1983) paper, I wish to correct two
errors in that paper. In the abstract I stated: "The
threshold of intense petroleum generation is not detectable in
Plio-Miocene sediments at minimum temperatures of 160°C"
(Price, 1983, p. 5). I should have said ". . . in Pliocene
and Miocene sediments with hydrogen-rich organic matter at
minimum temperatures of 160°C." In the Fig. 19 caption, in
a classic demonstration of Murphy's Law, a line was dropped
during printing so that the last sentence of that caption read:
"This equation can only be applied to coals or rocks with
Type I organic matter". The sentence should have read:
"This equation can only be applied to coals and rocks with
Type III organic matter. It cannot be applied to rocks with Type
I organic matter."+