Mars' Water Appears To Have Been Too Salty To Support Life

Science Daily ^ | 5/30/08

[r9etb]

Ah, the dangers of single-point extrapolations. I’m sure that a rock sample from the Dead Sea or Salt Lake would prompt the same assessment....

[<1/1,000,000th%]

What are the extremely halophilic organisms?

What organisms can survive water activity below .75?

Or below .50?

Just curious.

[AndrewC]

But that in itself ought to tell you that I'm also not likely to compromise those same ethics by faking those facts that I "can" reveal.

So you say again. That does not help your position or argument.

Here's a couple of clues for you. MOST scientific research isn't peer reviewed.

According to many posters here, it is not science if it is not peer-reviewed. Take it up with them. That still not justify believing something classed as "double secret".

From the pictures I've seen, abundant life is obvious right up to the margin of the "smoker" vent itself.

You've got sharp eyes if you can see bacteria and determine temperature and concentrations from pictures taken from submersibles.

[Wonder Warthog]

"According to many posters here, it is not science if it is not peer-reviewed."

I could give a crap what "many posters here" say. I'm a practicing scientist, and I know how the world of science actually works (INCLUDING "peer review").

"That still not justify believing something classed as "double secret""

Your choice. I've had may say. Believe it or not.

[AndrewC]

I could give a crap what "many posters here" say. I'm a practicing scientist, and I know how the world of science actually works (INCLUDING "peer review").

I suppose then you have little reason to be on this site posting on these particular threads. Especially when you do belittle those scientists that we all know are practicing science, whether their conclusions are right or wrong.

I respect your chosen profession, however, at the moment I believe the conclusions drawn by the authors of this study and not your "double secret" data and conclusions.

[Wonder Warthog]

See the last line in my last post to “netmom”. It applies to you, too.

[Old Professer]

Calcium carbonate

[Swordmaker]

Re: calcium carbonate

Thanks, Prof. I merely copied the heading on the picture.

[AndrewC]

See the last line in my last post to “netmom”. It applies to you, too.

Okay, Rhett. Your "absence" will not be missed.

[Old Professer]

I accidently took home a plastic bag of these deposits from Mono Lake on a trip through the area; Mark Twain commented on their excellent cleaning powers around the time he spent in Virginia City, Nevada.

Here’s a WIKI snip:

[Tufa is the name for an unusual geological form of calcite rock.

Tufa is a rough, thick, rock-like calcium carbonate deposit that forms by chemical precipitation from bodies of water with a high dissolved calcium content. Tufa is not to be confused with tuff, which is volcanic.

Tufa deposition occurs in seven known ways:

Mechanical precipitation by wave action against the shore. This form of tufa can be useful for identifying the shoreline of extinct lakes (for example in the Lake Lahontan region).
Precipitation from supersaturated hot spring water entering cooler lake water.
Precipitation in lake bottom sediments which are fed by hot springs from below.
Precipitation from calcium-bearing spring water in an alkaline lake rich in carbonates.
Precipitation throughout the lake as the lake dries out.
Through the agency of algae. Microbial influence is often vital to tufa precipitation.
Precipitation from cold water springs (for example in the foothills of the Rocky Mountains near Hinton, Alberta).
There are some prominent towers of tufa at Mono Lake and Trona Pinnacles in California, USA, formed by the fourth method mentioned above whilst submerged and subsequently exposed by falling water levels. Tufa is also common in Armenia.]

[Swordmaker]

Thanks Prof. I always appreciate learning new things. I knew that Mono Lake approaches saturation levels of some of the chemicals in the water and that can lead to the growth of these towers.

[SunkenCiv]

Mars Rovers Sharpen Questions About Livable Conditions
Jet Propulsion Laboratory | February 15, 2008 | Guy Webster
Posted on 02/23/2008 12:11:53 PM PST by SunkenCiv
http://www.freerepublic.com/focus/chat/1975123/posts