Dear GEO-TECTONICS list members,
On 26-Apr,2011 I posted a request to review new concept of forces
behind continental drift, post #5932 on 26-Apr,2011 and post #5955 on
3-May, 2011. I would agree it would be better to prepare a work,
publish it, and then to discuss it on the forum, For some reason I
got no option to go the standard way. Let me to sum up what I've done
since then in a short message. I am not sure I'll have an opportunity
to continue the work (though I'll be trying to continue it).
The initial concept did not transform too much. As for now, the
concept "Active Boundary Plate Tectonics" is based on the next
suggestions.
- the suggestion that under the deformations the transition layer
between crust and magma propagates in the direction of lower
temperature;
- the suggestion that if the transition layer reached surface, it
would build either:
a) divergent boundary if enough cooling of the surface were present
(water layer over oceanic floor, say East Pacific Rise);
b) convergent boundary if the transition layer reached atmosphere (not
enough cooling), I'd say - Hawaii. The upper layers of magma is
getting spoiled by sediments and nearby chain of underwater volcanoes
can't build the strong (divergent) boundary.
- third suggestion to be discussed later;
The derived ideas range from very local geographically to planet-wide:
- Big picture on continental formation end evolution, (my blog post
"Continental Formation And Evolution Revisited".)
- Pangaea layout. There was a post on this list #6165 (13-Jul, 2011)
"Request for links to resources on alternative Pangaea layouts." The
proposed layout was to place Australia, India, and NZ on the West of
South America. Australia to be connected to "Atacama desert" region,
India's cratons to be places on the North-West of Australia. NZ to be
connected to South America below Australia. One of the evidences was
the location of porphyry copper deposits, (my blog post "Porphyry
Copper. More On Reshaping Pangaea (Gondwana)".)
- Mountain formation. (my blog post "Formation Of Mountain Ridges by
Broken Process Of Subduction"). Tibet/Himalaya formation mechanism was
suggested - by the consecutive "broken processes of subduction".
- Intra-continental tectonic processes. Some evidences of divergent
processes within continents were pointed out: - my posts "The Snake
River Plain As A Divergent Boundary", "Diverging Processes Within Las
Vegas Valley", "Diverging The Southern Death Valley", "Evidences Of
Diverging Processes Within Tibet Mountain System.", "Ural-Putorana
Diverged, Suggesting The Global Mechanism", "Evidences Of Old
Diverging Process Within North Anatolian Mountains.".
It was suggested that the diverging processes were behind the
"Flood Basalt" events. The Snake River Plain divergent process was
suggested to correlate to flood basalts on the North and on the South
of the plain. The event of diverging Ural from Putorana was suggested
to be one of the primary cause of Siberian Traps flood basalts (my
blog post "Ural-Putorana Diverged, Suggesting The Global Mechanism").
A few words in conclusion. The proposed concept of Active Boundary
Plate Tectonics seems to be quite efficient concept. It could be used
to explain not only intercontinental tectonic processes, but also to
explain very local intra-continental tectonic processes.
Thank you.
Sergey D. Sukhotinsky.
--
PS.
The most exciting for me was my work on my post "Black Sea. Some
Thoughts On Its Opening And On The Origin OF The Crimean Mountains."
The post was about that the divergent boundary - the Shatsky Ridge
separated the Crimean Mountains off Pontic Mountains. Some evidences
were discussed:
- Matching mountains on Anatolia (Dongelce) and Crimea (Laspi) side.
The rectangular mountain structures can be found only in this "bent"
part of Pontic Mountains.
- Matching mountains all over the divergent mountain system (Yalta,
Crimea to match Aydincik-Doganyurt, Turkey; Feodosia, Crimea to match
Caylioglu, Turkey; Novorossiysk-Anapa, Russia fit Carsamba, Turkey).
The mechanism that diverged the mountain system was discussed. The
origin of deep see locations around Laspi was suggested.
I posted about two dozens of posts on Plate Tectonics on my blog
http://divergent-boundaries.blogspot.com. Now I've made most of the
posts private, but still on-demand are available the timestamped
editions of them and their drafts that are stored in the cloud.
(I think, some day the blog platform host will introduce the feature
to make public the saved editions of a blog post.)
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