Encyclopedia > Catagenesis

  Article Content


Catagenesis is a term used in petroleum geology to describe the cracking process which results in the conversion of organic kerogens into hydrocarbons.

This chemical reaction is believed to be a time, temperature and pressure dependent process which creates liquid and/or gaseous hydrocarbon Hc from primary kerogen X and can be summarised using the formula:

<math>X_0 \rightarrow Hc + X(t)</math>
where X0 is the initial kerogen concentration and X(t) is the kerogen concentration at time t.

It is generally held that the dependence on pressure is negligible, such that the process of catagenesis can be given as a first-order differential equation:

<math>\frac{dX}{dt} = - \kappa X</math>
where X is the reactant (kerogen) and κ is the reaction-rate constant which introduces the temperature-dependence via the Arrhenius equation.

See also: diagenesis, fossil fuels.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Shoreham, New York

... are 99.5 males. For every 100 females age 18 and over, there are 88.8 males. The median income for a household in the village is $109,719, and the median income for ...

This page was created in 38.7 ms