Tourmaline and rutile geochemistry in the Early–Middle Devonian sandstones of the Padeha Formation, Alborz Range, Northern Iran

2021 ◽  
Author(s):  
Mahdi Jafarzadeh ◽  
Katarína Bónová ◽  
Tomáš Mikuš ◽  
Ján Bóna ◽  
Mehdi Rezaei‐Kahkhaei ◽  
...  
Keyword(s):  
Middle Devonian ◽  
Northern Iran ◽  
Alborz Range

scholarly journals Thermal maturity of the Upper Triassic–Middle Jurassic Shemshak Group (Alborz Range, Northern Iran) based on organic petrography, geochemistry and basin modelling: implications for source rock evaluation and petroleum exploration

2011 ◽  
Vol 149 (1) ◽  
pp. 19-38 ◽  
Author(s):  
ALI SHEKARIFARD ◽  
FRANÇOIS BAUDIN ◽  
KAZEM SEYED-EMAMI ◽  
JOHANN SCHNYDER ◽  
FATIMA LAGGOUN-DEFARGE ◽  
...  
Keyword(s):  
Middle Jurassic ◽  
Vitrinite Reflectance ◽  
Upper Triassic ◽  
Petroleum Exploration ◽  
Thermal Maturity ◽  
Northern Iran ◽  
Carbonaceous Shales ◽  
Petroleum Generation ◽  
Central Eastern ◽  
Alborz Range

AbstractOrganic petrography and geochemical analyses have been carried out on shales, carbonaceous shales and coals of the Shemshak Group (Upper Triassic–Middle Jurassic) from 15 localities along the Alborz Range of Northern Iran. Thermal maturity of organic matter (OM) has been investigated using vitrinite reflectance, Rock-Eval pyrolysis and elemental analysis of kerogen. Reflectance of autochthonous vitrinite varies from 0.6 to 2.2% indicating thermally early-mature to over-mature OM in the Shemshak Group, in agreement with other maturity parameters used. The shales of the Shemshak Group are characterized by poor to high residual organic carbon contents (0.13 to 5.84%) and the presence of hydrogen-depleted OM, predominantly as a consequence of oxidation of OM at the time of deposition and the hydrogen loss during petroleum generation. According to light-reflected microscopy results, vitrinite/vitrinite-like macerals are dominant in the kerogen concentrates from the shaly facies. The coals and carbonaceous shales of the Shemshak Group show a wide range in organic carbon concentration (3.5 to 88.6%) and composition (inertinite- and vitrinite-rich types), and thereby different petroleum potentials. Thermal modelling results suggest that low to moderate palaeo-heat flow, ranging from 47 to 79 mW m−2 (57 mW m−2 on average), affected the Central-Eastern Alborz basin during Tertiary time, the time of maximum burial of the Shemshak Group. The maximum temperature that induced OM maturation of the Shemshak Group seems to be related to its deep burial rather than to a very strong heat flow related to an uppermost Triassic–Liassic rifting. The interval of petroleum generation in the most deeply buried part of the Shemshak Group (i.e. Tazareh section) corresponds to Middle Jurassic–Early Cretaceous times. Exhumation of the Alborz Range during Late Neogene time, especially along the axis of the Central-Eastern Alborz, where maximum vitrinite reflectance values are recorded, probably destroyed possible petroleum accumulations. However, on the northern flank of the Central-Eastern Alborz, preservation of petroleum accumulations may be expected. The northern part of the basin therefore seems the best target for petroleum exploration.

Deploying depositional and stratigraphic evidence in kinematic investigations along multi-role faults: The case study from the eastern Mosha Fault, central Alborz Range, northern Iran

2020 ◽  
Vol 187 ◽  
pp. 104086
Author(s):  
Hamid Reza Javadi ◽  
Meyssam Kouhpeyma ◽  
Parisa Gholami Zadeh ◽  
Amir Naeimi ◽  
Mohammad Reza Sheikholeslami ◽  
...  
Keyword(s):  
Northern Iran ◽  
Central Alborz ◽  
Alborz Range ◽  
Mosha Fault

Geological environment of the zeolite origin in the Central Alborz Range, Northern Iran

2012 ◽  
Vol 265 (3) ◽  
pp. 235-248 ◽  
Author(s):  
Batoul Taghipour ◽  
Mohammad Ali Mackizadeh
Keyword(s):  
Geological Environment ◽  
Northern Iran ◽  
Central Alborz ◽  
Alborz Range

Characterization of organic matter in the fine-grained siliciclastic sediments of the Shemshak Group (Upper Triassic–Middle Jurassic) in the Alborz Range, Northern Iran

2009 ◽  
Vol 312 (1) ◽  
pp. 161-174 ◽  
Author(s):  
Ali Shekarifard ◽  
François Baudin ◽  
Johann Schnyder ◽  
Kazem Seyed-Emami
Keyword(s):  
Organic Matter ◽  
Middle Jurassic ◽  
Upper Triassic ◽  
Northern Iran ◽  
Fine Grained ◽  
Alborz Range ◽  
Siliciclastic Sediments

Accommodation of late Cenozoic oblique shortening in the Alborz range, northern Iran

2003 ◽  
Vol 25 (5) ◽  
pp. 659-672 ◽  
Author(s):  
M.B Allen ◽  
M.R Ghassemi ◽  
M Shahrabi ◽  
M Qorashi
Keyword(s):  
Late Cenozoic ◽  
Northern Iran ◽  
Alborz Range

Kinematic links between the Eastern Mosha Fault and the North Tehran Fault, Alborz range, northern Iran

2014 ◽  
Vol 622 ◽  
pp. 81-95 ◽  
Author(s):  
Mohammad R. Ghassemi ◽  
Morteza Fattahi ◽  
Angela Landgraf ◽  
Mehdi Ahmadi ◽  
Paolo Ballato ◽  
...  
Keyword(s):  
Northern Iran ◽  
The North ◽  
Alborz Range ◽  
Mosha Fault

Is the Slope Between the Alborz Mountains and Caspian Sea in Northern Iran a Bottleneck for Migrating Raptors?

2018 ◽  
Vol 52 (4) ◽  
pp. 530-533 ◽  
Author(s):  
Michele Panuccio ◽  
Bahareh Ghafouri ◽  
Elham Nourani
Keyword(s):  
Caspian Sea ◽  
Northern Iran
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