Amount of dissolved sodium in oceans (Talk.Origins)
- Known processes to remove sodium from the oceans account for only 27 percent of the sodium that is added. Given the accumulation of sodium this implies, the oceans could not be more than 62 million years old.
Source: Austin, S. A. and D. R. Humphreys, 1990. The sea's missing salt: A dilemma for evolutionists. Proceedings of the Second International Conference on Creationism, Pittsburgh, 2: 17-33.
CreationWiki response: (Talk.Origins quotes in blue)
1. Austin and Humphreys greatly underestimate the amount of sodium lost in the alteration of basalt. They omit sodium lost in the formation of diatomaceous earth, and they omit numerous others mechanisms which are minor individually but collectively account for a significant fraction of salt.
A detailed analysis of sodium shows that 35.6 x 1010 kg/yr come into the ocean, and 38.1 x 1010 kg/yr are removed (Morton 1996). Within measurement error, the amount of sodium added matches the amount removed.
This point has a fundamental flaw. Talk.Origins is using the wrong value for sodium influx. 35.6 x 1010 kg/yr is a minimum value estimated by Austin and Humphreys in an effort to be generous to Evolutionists. The current influx rate is 45.7 x 1010 kg/yr. So if Talk.Origins' removal rate is accurate, then there is a net influx rate of 7.6 x 1010 kg/yr. This clearly is not in equilibrium.
The current influx rate results in a maximum age for the oceans of 273 million years. This result is still far less than the 3 billion years required by Evolution's old Earth model.
NB: Talk.Origins' entire response is quoted above. There is no other response numbered "2".