Earth's 2 Moons? It's Not Lunacy, But New Theory

[ThankQ]

Most of these theories are so theoretical it's nothing more than conjecture because the amount of evidence is sparse.

Nope, little to go on.

We have no idea where oceans come from and when.

Just ideas, no way to narrow it down.

I'm inclined to believe that Earth always had the oceans.

Errm....

 

[Saquist]

Most of these theories are so theoretical it's nothing more than conjecture because the amount of evidence is sparse.

Nope, little to go on.

I don't understand what you're negating as following your pause you seem in agreement.

I'm inclined to believe that Earth always had the oceans.

Are not the oldest rocks also sedimentation rocks too? As in associated with water?

 

[YellowSubmarine]

They suspect that the planet was struck by an object 2/3 the size of moon.

I don't think an object 2/3 the size of Deimos would do much to the oceans.

 

[ThankQ]

Most of these theories are so theoretical it's nothing more than conjecture because the amount of evidence is sparse.

Nope, little to go on.

I don't understand what you're negating as following your pause you seem in agreement.

I'm inclined to believe that Earth always had the oceans.

Are not the oldest rocks also sedimentation rocks too? As in associated with water?

As I understand it most sedimentary rock aren't dated before 3.8bya. There just aren't many older rocks left.

You'd do better with this argument:

Evidence from detrital zircons for the
existence of continental crust and
oceans on the Earth 4.4 Gyr ago

http://www.es.ucsc.edu/~rcoe/eart206/Wilde et 01 Nature 409-175.pdf

 

[Saquist]

Nope, little to go on.

I don't understand what you're negating as following your pause you seem in agreement.

I'm inclined to believe that Earth always had the oceans.

Are not the oldest rocks also sedimentation rocks too? As in associated with water?

As I understand it most sedimentary rock aren't dated before 3.8bya. There just aren't many older rocks left.

You'd do better with this argument:

Evidence from detrital zircons for the
existence of continental crust and
oceans on the Earth 4.4 Gyr ago

http://www.es.ucsc.edu/~rcoe/eart206/Wilde%20et%2001%20Nature%20409-175.pdf

3.8 ?
I could only find 3.4 and 3.5