Policy Making Committee of the 4th YES Congressconf.yesnetwork.ir/files/site1/files/South_Caspian-_Edit.pdf · Field Trip of Tectonic, Stratigraphy and Sedimentary evolution of the

YES Congress thPolicy Making Committee of the 4

Patronage: Mohammad Taghi Korehie

Members (In alphabetic order):

Hamid Ashtari

Marziyeh Esterabi Ashtiani (Executive Secretary & Chairperson of Secretariat)

Manouchehr Ghorashi

Raziyeh Lak

Ali Najafi

YES Congress thLocal Organizing Committee of the 4

Chairperson: Marziyeh Esterabi Ashtiani

Members (In alphabetic order):

Khatereh Aligholizadeh Hatam

Mina Birjandi

Saba Dashti Chandanagh

Najmeh Davari

Parvin Esmaili

Masoumeh Evaz Namvar

Reyhaneh Fazli

Somayeh Habibi

Maryam Heidarian

Sedigheh Jadavi

Zahra Latifi

Maryam Mehrdadian

Marziyeh Rostami

Zeinab Sharifi

Mojgan Yaghoubi

Bita Mirzapour (Iran Representative in YES Network) (Iran Representative in YES Network and

Deputy Chair of International Organizing Committee for 4th YES Congress)

the for loration Executive CommitteepMembers of the Directorate Ex

:congress YES th4

Dr. Golamreza Gharabeigli: Scientific Secretary

Dr. Mahmood Hajian Barzi: Executive Secretary

Rahim Bagheri Tirtashi: Responsible for articles and manuals

Hamed Saadatnia: Responsible for tourist trips

Amin Azadikhah: Responsible for specialized trips

Nadiah Nazarpour: Team leader for workshops

Haniyeh Rabbani Mousavian: site team

The organizing specialized trips:

South Caspian Basin trips: Behrouz Ariafar , Arsalan Bakhshi

congress YES th4

29-31 August 2017

Tehran-Iran

Touristic and geological excursion to

Alborz Mountain and Gorgan Plain

Guide book

thsymposium excursion of the 4Post

YES congress

29-31 August 2017

Geological Excursion Southeast of South Caspian Basin (Alborz Mountain

and Gorgan Plain)

Field Trip of Tectonic, Stratigraphy and Sedimentary evolution of the

South Caspian Basin

Behrouz Ariafar, Arsalan Bakhshi(National Iranian Oil Company, Directorate

Exploration)

:Field Itinerary

31 August 2017 Field date:

: 210 dollarCost per person

15 people :Capacity

: Sari, Navid hotel Accommodation hotel

Day 1

title time Departure from Tehran To excursion area 8

Arriving to Savad Kuh town and excursion area (Stop-1) 11:30 Lunch in Zirab town 13

Javarem section (Stop-2) and Haftan Anticline 14 Moving to Behshahr city (Hotel) 17

2Day

title time Departure from hotel (Behshahr city) To excursion area (Easren Alborz) 8

Arriving to Niala section (Stop-3) 9

Band Sar section 10

Sorkh Griveh area 11

Lunch in field area 12

Moving to Tehran 13

Field Agenda (South Caspian Basin) The aim of the field trip is investigate some of the sedimentary and tectonic features of the

ancient caspian deposits (Neogene) in Southeastern of South Casapian Basin (Alborz

Mountain and Gorgan plain).

Geological setting of the South Caspian Basin The onshore Gorgan plains and north flank of eastern part of Alborz Mountain (Excursion

area) is located in the southeast margin of the South Caspian Basin (SCB), near the

Turkmenistan border. The SCB encompasses the southern extension of the Caspian Sea, has

been defined as an intracontinental depression floored by an unsubducted oceanic - type

crust, dominated by an overall compressional regime of active Alpine - Himalayan thrust (fig.1) Geological setting of South Caspian Basin

belts (Berberian, 1983). A 20 km thick relatively undeformed sedimentary cover rests over a

basaltic basement interpreted as an oceanic type crust based on a seismic velocity of 6.6 -

7km/s (Neprochnov, 1968; Zonenshain et al., 1991; Brunet et al., 2003). The northern boundary of the basin is formed by the Apsherom-Balkhanian sill and

surrounded by four orogenic belts, Great Caucasus and Talysh in western, Alborz in southern

and Kopet Dagh in eastern coasts (fig.1).

The SCB is unusual in several respects; sediment accumulated at exceptionally high rates (as

high as 4.5 km/m. y.); Sedimentary strata accumulation in the SCB attain thickness of as

much as 20 km in each of three main depocenters (Azerbaijan offshore, western

Turkmenistan offshore and onshore (Gorgan plain is related to Turkmen shelf) and Iran

offshore). The rocks range in age from Early Jurassic to Quaternary. About a half of this was

deposited in the very short Pliocene-Quaternary interval, within a regional compressional

tectonic setting related to the Alpine closure of Neo-Tethys during Arabian-Eurassia

collision.

After sea level fall in Upper Miocene, and Early Pliocene the northern and middle Caspian

basin became dry land, and the total area of the sea was reduced to half its present size. In

this condition paleo deltas carried their waters directly into the SCB and allowing the

paleodelta deposits prograde to the basin at which time and the Pliocene Red Bed series

(Chelekanian) was deposited, such as Volga, Kura, Amu Darya, Sefid Rud and other

paleodeltas (fig.2). The remaining marine basin was filled in with sands and clays (Brown

Bed series) and formed the main Caspian reservoir.

In SCB the Middle-Upper Pliocene (Brown Bed series & Akchagylian) & Quaternary

deposits unconformably overlies an eroded Upper Cretaceous – Paleogene surface by a

striking sea – level drop. The Quaternary sedimentary deposits are distributed widely in the

SCB. These sediments consist of clays and sands of Apsheronian, Bakunian, Khazarian,

Khvalynian and Novocaspian stages.

Due to the presence of mud volcanoes, the SCB has been an attractive prospect for

hydrocarbon exploration. The main oil and Gas fields located in Azerbaijan and

Turkmenistan.

(fig.2) Paleogeography of South Caspian Basin in Pliocene(After Torre,2007)

Savad Kuh area (Stop-1) In order to geological excursion from South Caspian Basin, we would used Firuz kuh Road

and first area that we will stop is Savad Kuh. It is a town that located in north flank of Alborz

mountain, with its surface geological configuration, exposing Mesozoeic deposits.

Javarem Section (Stop-2) Javarem anticline located at the north of Zirab town. This outcrop is one of the best section of

Sarmatian (red marn & siltstone) and Pliocene (Brown Beds) in central Alborz. The Brown

Beds in Javarem mostly consist of very thick to massive Coarse – grained conglomerate,

sandstone and claystone that deposited in a river systems (figs.3&4).

(fig.3) Polymictic conglomerate (fig.4) Very thick to massive conglomerate

Niala Section (Stop-3) This section in the south of Niala vilage (25 km, south of Galugah town) located in Eastern

Alborz, where Gorgan metamorphic rocks and Upper Cretaceous limestone (Ku1 & Ku2)

from base to the tope crops out.

Band Sar Section (Stop-4) Band Sar section located in the south of Galugah town in Eastern Alborz. In this outcrop the

Pliocene (Brown Beds) overlain Upper Cretaceous with angular unconformity. The Brown

Beds mostly consist of sandstone and claystone and minor fine – grained conglomerate with

some Channel systems (figs.5&6).

Sorkh Geriveh area (Stope-5) The Upper Miocene red marls and Siltstones deposited in the Sorkh Griveh area in eastern

Alborz Mountains. During the Middle Miocene (14-15 Ma) the large – scale mountain –

building split up the Parathetys into several minor basins and Upper Miocene strata are absent

on several area.

(fig.5)Lower contact of Brown Beds (fig.6)Channel system with sandstone in Niala

section

Upper Cretaceous

Brown Beds

(fig7): The location and visit path of Excursion area in South Casapian Basin (Alborz Mountain

and Gorgan plain).

Reference

Abdullayev,N.R., 2010, Regional Controls on Lacustrine Sandstone Reservoirs: The

Pliocene of the south Caspian Basin: AAPG Memoir 95, p.1-28.

Brunet, M.F., M.Korotaev, A. Ershov, and A. Nikishin, 2003, Evolution of the south Caspian

Basin from subsidence modeling: sedimentary Geology, V. 156,P.119-148, doi:10.1016

S0037-07385-30.

Berberian, the Southern Caspian: a compressional depression Floored by a Trapped Modified

Oceanic Crust., Canadian J.Earth Sci.20(2), 162-183(1983).

Yu.P.Neprochnov, Structure of the Earth Crust of Epicontinental Seas: Caspian Block and

Mediterranean, Can.J.Earth sci.5,1037-1043(1968).

Torre,M.A.,2007. The Petroleum Geology Of Western Turkmnistan: The Gograndag-okarem

province AAPG Studies in Geology 55,p.109-132.

Zonenshain, C.P.,M.J.Kuzmin, and L.M.Nata pov,1991, Geology of the USSR: A plate

tectonic synthesis, in B.page,ed., Geodynamics series: American Geophysical Union,

Vo21,P.241.