Tectonics and structural geology of Gorgan and Aliabad area
|Category||Tectonic & Seismotectonic|
|Location||The 3 Symposium of Geosciences|
|Holding Date||31 July 2007|
- It looks, Gorgan schists and volcanic schists in Aliabad are in sequence, comparable and equivalent the upper Ordovician rocks and Soltan-Meidan volcanics(Silurian) in the north of Necarman village.
- In Gorgan – Rasht area, There is an abvious Angular unconformity between Mesozoic deposits (Shemshak.F) and older rocks
Altogether, the Paleozoic rocks in the Alborz and Gorgan-Rasht zones, in spite of facies changes in some formations and local stratigraphic gaps, have shown a single sedimentary basin before Mesozoic, Besides, It appear that Continuation of this Basin towards the Gorgan plain (Kopeh-Dagh zone),has been cut by big khazar Fault ,this cut and uplift of the northern limb of remains of Gorgan schiest Antiform (North of Gorgan – Rasht zone), Nearly synorogenic of Early kimmerian. It is initial for starting separation sedimentary environment in the two Kopeh-Dagh and Gorgan-Rasht zones. Recent zone is actually the part of Alborz zone in which there is a higher deformation than Alborz zone, specially in the northern parts of that (with approaching the place of collision of Touran and Iran plates).