İ saw there is "genç kıvrım dağlar"

Genç dağ = bir tepe      

 What I said was "There is no strict rule saying "genç/yaşlı" is used for persons only"

 It was an answer to the question in the first post.

It seems you didn´t bother reading the opening post of the thread:

It is clear that you didn´t even bother reading the following posts:

Quoting deli

I think thats correct

...

As for ´genç dağlar´:

Old fold mountains are characterized by having stopped growing higher due to the cessation of upward thrust caused by the stopping of movement of the tectonic plates in the Earth´s crust below them. In ancient times they were extremely high but since have worn down almost completely by millions of years of weathering. In stark contrast Himalayas are continuously rising young fold mountains of today.

http://en.wikipedia.org/wiki/Aravalli_Range

The growth process is still going on. On a geological timescale the Alps are a young mountain range, still developing: the Alps gain about one millimetre (0.04 ") in height every year. One can recognize a young mountain range by its high and roughly shaped tops.

http://answers.yahoo.com/question/index?qid=20090129050917AA6AkFw

You don´t have to thank me for this. It makes me happy to teach someone and it is cool when they learn something.

My thanks to Scalpel, Marion and the Dilliduduk for pointing out that the words for old are not used exclusively. 

I DID read all the posts , thank you!

What I intended was to avoid misunderstandings! Since you did NOT say there can be exceptional situations, I added that these are exceptions and one cannot say yaşlı or genç for any object.

And thank you for explaining genç dağlar, I have not heard about it.

It makes me happy to make things clear.

I am sure your intention was as noble as to avoid misunderstandings!I know that feeling. but I can´t see how it could avoid misunderstandings

You say making things clear makes you happy, but you don´t "make things clear". Or do you think saying "there can be exceptional situations" was enough to make it clear?

Let me make it clear then:

genç/yaşlı is not only for persons but also for living things and non-living things behaving like living beings.

You can say genç devlet, for example, genç cumhuriyet, genç ülke, yaşlı bina, yaşlı kıta,  yaşlı araba, yaşlı dünya, yaşlı tortullar, genç oluşumlar, genç katmanlar, genç Türk televizyonu, genç uçak filosu,  etc.

See you next time