Okay, well I have to write a persuasive letter to the MTA (Metropolitan Transit Authority) demonstrating my concern over how the second avenue subway line project could impact the different types of metamorphic and sedimentart rocks found under the city if a new subway tunnel is built. Please help me..I've got nothing =\ and i also need reasons to why I should be against tunneling..
and also how would the tunnels contribute to extra destruction during earth quakes...and should we tunnel through the metamorphic rocks?

Where do you live? I'm assuming the west coast of the US.

Where do you live? I'm assuming the west coast of the US.
Sounds like Boston to me. (The other coast.) ;)

sounds like homework to me. although, if you ask more specific questions, you are more likely to get answers. instead of the equivalent of "hey, can you write a letter for my English class for me?"

I hate to ask questions about homework here, and when I do (rarely) I don't ask for solutions, I simply look for help understanding what I need to do. so perhaps you should be asking for geological resources people here know about, and can link you to.

project could impact the different types of metamorphic and sedimentart rocks found under the city if a new subway tunnel is built. Please help me..I've got nothing =\

This might help, I'm not sure. It describes what happens to sedimentary and metamorphic rocks under different conditions: http://www.tunnelassistant.gr/conditions/rules.htm

MTA is New York City.
It sounds like homework to me too.
Why would you be writing a letter to the MTA regarding the dangers of tunneling, if you do not know what the dangers of tunneling are?
What I don't understand is how peple come and ask questions like this with absolutely NOTHING to go on or even start with. It is as if the teacher didn't even begin to discuss the subject in class or give any reading materials.
Is this the case? Did the teacher just turn to you in the middle of math class and say to you, out of the blue, "Unscenetears, you have an assignment. Write a letter to the MTA demonstrating your concern over how the new Second Avenue subway line project could impact the different types of metamorphic and sedimentart rocks found under the city."?

Okay, well I have to write a persuasive letter to the MTA (Metropolitan Transit Authority) demonstrating my concern over how the second avenue subway line project could impact the different types of metamorphic and sedimentart rocks found under the city if a new subway tunnel is built. Please help me..I've got nothing =\ and i also need reasons to why I should be against tunneling..
and also how would the tunnels contribute to extra destruction during earth quakes...and should we tunnel through the metamorphic rocks?
If there are nothing but loose sedimentary rocks and deposits above then the underground cemented structures should add support to the above ground sedimentary deposits, not add to their instability. What is the reason for your concern?

MTA is New York City.


It's not the only one. ;) Could still be Boston, too. Doesn't look like he's going to tell us, though.

(Check out this news item): :D

"The addition of a ‘High Occupancy’ vehicle lane (HOV lane) was put in at a cost of $550 million, and yet the Boston MTA has lowered the requirement for three people in a car to use this lane down to just two people as an attempt to encourage its use. There are currently no planned public education programs to discourage such widespread increase in the adoption of the car, such as car sharing schemes or increasing numbers required for use of the HOV lanes. MTA Public Relations Manager, Seán O’Neill comments, “Changing peoples habits, that’s the hardest thing to do.”"

It's not the only one. ;) Could still be Boston, too.
I didn't know that.
I wonder if they are the same company.

When I heard MTA and 2nd Avenue, I automatically jumped to Manhattan (especially because Manhattan doesn't have a 2nd Avenue line, and would likely benefit from it from a commuter perspective).

I didn't know that.
I wonder if they are the same company.

When I heard MTA and 2nd Avenue, I automatically jumped to Manhattan (especially because Manhattan doesn't have a 2nd Avenue line, and would likely benefit from it from a commuter perspective).

Neither of them is a "company", it's just the name the cities chose - Metropolitan Transit Authority. In Chicago, they call it CTA - Chicago Transit Authority. In Atlanta, it's MARTA - Metropolitan Area Rapid Transit Authority.

Just the names the towns picked for that department.

New Yorks MTA is actually a "A public-benefit corporation".

New Yorks MTA is actually a "A public-benefit corporation".

I believe several of them are. That's for the purpose of limiting liability. But all of them are ultimately controlled by the city government who also appoints the members of their board of directors.

Too late.
The 2nd Avenue subway line was approved in referendum yesterday (NYC).

Too late.
The 2nd Avenue subway line was approved in referendum yesterday (NYC).
????

To late?

I never said it had to Boston, just that it could have been since they also have a MTA. I didn't realize this was supposed to be some sort of argument over which city it really was. :confused:

Not you, Light.
I mean too late for the original poster's letter.
The measure already passed, so it is too late for the letter to change anything.

I believe several of them are. That's for the purpose of limiting liability. But all of them are ultimately controlled by the city government who also appoints the members of their board of directors.
I always assumed they were a private corporation who worked under contracts with the government (like Port Authority).

Okay, well I have to write a persuasive letter to the MTA (Metropolitan Transit Authority) demonstrating my concern over how the second avenue subway line project could impact the different types of metamorphic and sedimentart rocks found under the city if a new subway tunnel is built. Please help me..I've got nothing =\ and i also need reasons to why I should be against tunneling..
and also how would the tunnels contribute to extra destruction during earth quakes...and should we tunnel through the metamorphic rocks?

Actually, tunnels are OK thru earthquake zones--earthquake waves pass much more readily through solid mediums like rock or soil. They don't travel through the relatively much less dense medium of empty air inside the tunnel. About 2000 years ago, the ancient Romans used to drill wells all around Rome in order to lessen the effects of earthquake waves travelling towards Rome from distant events.

About 2000 years ago, the ancient Romans used to drill wells all around Rome in order to lessen the effects of earthquake waves travelling towards Rome from distant events.
Cool.
I never heard this.
Is there any evidence it was ever "tested" and worked?

Tell them to build a bridge (only if it is not near an earthquake zone)

Cool.
I never heard this.
Is there any evidence it was ever "tested" and worked?

Not sure--though no doubt there have been literally millions of earthquakes in that area since Roman times, and I guess the wells are still there. It may be worthwhile doing some tests in the area with modern equipment and finding out whether the effect of tremors is actually lessened.