Re: evidences against subduction theory

George <george@xxxxxxxxxxxxxxx> wrote:

[...]

Mountain chains such as the Andes are thought to
form when the subducted slab suddenly detaches from the slab above it along
the line of subduction, releasing the upper slab, causing it to rise
suddenly.

how can't you realize it is absurd?

The Andes records many such sudden uplifts, as well as
characteristic subduction-related volcanism.

Uplifts are linked to diapirism.


We saw the same phenomenon
during the 2004 Sumatran Earthquake. Nearly the entire coastline of Western
Sumatra along the fault break uplifted as much as 150 cm


People wrongly think that if there is expansion it is regular at 18 mm
radius /year or so. It can't work like that. First stress build up in
the lithosphere with limited uplift until failure, then there is a
release of the accumulated energy and you get a sudden uplift of 150 cm.

--
Florian

"Tout est au mieux dans le meilleur des mondes possibles"
Voltaire vs Leibniz (1-0)
.

Relevant Pages

  • Re: evidences against subduction theory
    ... form when the subducted slab suddenly detaches from the slab above it along ... the line of subduction, releasing the upper slab, causing it to rise ... release of the accumulated energy and you get a sudden uplift of 150 cm. ... the lithosphere snaps and there is uplift? ...
    (sci.geo.geology)
  • Re: Rotational dynamics and crustal motion
    ... Been able to get all the crust down those subduction zones using the ... ..causing epeirogenic uplift to form all those ... And if all that mantle can get shoved ...
    (sci.geo.geology)
  • Re: Troll
    ... only a continental plate that regionally experience uplift or sagging. ... I have seen seismic sections with a 'fossil' Benioff zone ... Subduction is not the same as overriding. ...
    (sci.geo.geology)
  • Re: Now, our famous geologist confuses continental rift and ocean.
    ... slab pull; he thinks slab pull alone is too simplistic. ... mechanism for moving plates and for triggering subduction are listed. ... mantle rocks. ... should pull and carry the 10,000 km wide Pacific plate, 33 times bigger, ...
    (sci.geo.geology)
  • Roll-back - by the "poof" of a faeries wand
    ... If subduction drives plate tectonics, and is caused by the forcing ... continental lithosphere, thus stopping all the friction giving the ... Accellerating fall then causes the rollback? ... rollback is then avoided by the sinking slab reaching avalanche speed ...
    (sci.geo.geology)