Biostratigraphy of acritarchs and chitinozoans in Ordovician strata from the Fazel Abad area, southeastern Caspian Sea, Alborz Mountains, northern Iran: Stratigraphic and paleogeographic implications

The Caspian Sea and adjacent areas form the vast oil and gas-bearing megabasin. It consists of North Caspian, Middle Caspian, and South Caspian sedimentary basins. The granite-metamorphic basement of the basins becomes from north to south younger in the direction from Early Precambrian to Early Cimmerian age. It represents a transitional zone from the southern edge of the East European Craton to Alpine folding. Geothermal investigations have been carried out both in hundreds of deep boreholes and within the Caspian Sea and a few preliminary heat flow maps were published for the Caspian Sea region. All they excluded from consideration the southern part of the region within Iranian national borders. We prepared a new heat flow map including the northern Iran. The purpose of the article is to consider heat flow pattern within the whole Caspian Sea region including its southern part. Two vast high heat flow anomalies above 100 mW/m2 distinguished in the map: within the southwestern Iran and in waters of the Caspian Sea to the North of the Apsheron Ridge, separated by elongated strip of heat flow below 50 –55 mW/m 2 . A general tendency of heat flow from growing was distinguished from the Precambrian crustal blocks of the North Caspian Depression to the Alpine folding within the territory of Iran. Analysis of the heat flow pattern is discussed and two heat flow density profiles were compiled.

Download Full-text

The Sultan and the Defiant Prince in Hunting Competition: Questions of Legitimacy in Hunting Episodes of Tabaristān

Violence in Islamic Thought from the Qur'an to the Mongols ◽

10.3366/edinburgh/9780748694235.003.0009 ◽

2015 ◽

pp. 141-152

Author(s):

Miklós Sárközy

Keyword(s):

Caspian Sea ◽

Eighth Century ◽

Seventh Century ◽

The Caspian Sea ◽

Northern Iran ◽

Islamic Period ◽

Mountainous Regions ◽

Early Islamic Period ◽

Early Islamic

The provinces of Northern Iran, the region south of the Caspian Sea, had a particular role in the Arab conquest of Iran. Their geographical isolation, mountainous regions, steamy and often intolerable sub-Mediterranean climate and thick forests caused many difficulties for the early Muslim conquerors in the seventh century ad. The ʿAbbāsid empire could only penetrate into the mountains of Ṭabaristān and the valleys of Māzandarān in the second half of the eighth century. In this chapter, I analyse some legends concerning the early Islamic period of the central provinces of the Caspian regions Ṭabaristān and Māzandarān. On the basis of some of the evidence, it seems that these stories could be linked with the myths of the last pre-Islamic Iranian empire – that of the Sāsānians.

Download Full-text

Between the mountains and the sea: Late Holocene Caspian Sea level fluctuations and vegetation history of the lowland forests of northern Iran

Quaternary International ◽

10.1016/j.quaint.2015.12.041 ◽

2016 ◽

Vol 408 ◽

pp. 52-64 ◽

Cited By ~ 5

Author(s):

Elias Ramezani ◽

Almut Mrotzek ◽

Mohammad Reza Marvie Mohadjer ◽

Ata Abdollahi Kakroodi ◽

Salomon B. Kroonenberg ◽

...

Keyword(s):

Sea Level ◽

Caspian Sea ◽

Late Holocene ◽

Vegetation History ◽

Northern Iran ◽

Sea Level Fluctuations ◽

History Of ◽

Lowland Forests

Download Full-text

Occurrence of Paederus fuscipes (Coleoptera: Staphylinidae) in the sandy tidal zone of the Caspian seashore

International Journal of Tropical Insect Science ◽

10.1017/s1742758417000297 ◽

2017 ◽

Vol 38 (01) ◽

pp. 33-38

Author(s):

J. Rafinejhad ◽

F. Asgarian ◽

S. H. Nikookar ◽

S. P. Ziapour ◽

M. Fazeli-Dinan ◽

...

Keyword(s):

Caspian Sea ◽

Southern Coast ◽

Mazandaran Province ◽

The Caspian Sea ◽

Tidal Zone ◽

Northern Iran ◽

Rove Beetles ◽

First Report ◽

Health Threat ◽

Geographical Variations

AbstractRove beetles (Coleoptera: Staphilinidae) are a group of diverse insects occurring in a range of different ecosystems, from the plains to the mountaintops. However, there are no reports in the literature of their presence in the tidal zone of the seashore. This is the first report of the presence ofPaederus fuscipesCurtis on the coastal sands of the Caspian Sea, northern Iran. In all 14 counties of Mazandaran Province on the southern coast of the Caspian Sea, systematic monthly sampling of the beetles took place from May 2012 to April 2013. Samplings (30-min-person) were performed and specimens collected from the sandy seashore by gloved bare hands and identified using appropriate keys. To our surprise, all 1012 specimens collected were exclusivelyP. fuscipesCurtis, but with significant seasonal and geographical variations among the numbers of specimens collected. The distribution and activity ofP. fuscipeswere outstanding in Mahmoodabad and Fereidonkenar counties, with the highest abundance and frequency in September, posing a serious health threat to tourists and residents of these areas.

Download Full-text

Development a new index for littered waste assessment in different environments: A study on coastal and urban areas of northern Iran (Caspian Sea)

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2021.112684 ◽

2021 ◽

Vol 171 ◽

pp. 112684

Author(s):

Ahmad Jonidi Jafari ◽

Parvaneh Latifi ◽

Zohre Kazemi ◽

Zahra Kazemi ◽

Maryam Morovati ◽

...

Keyword(s):

Caspian Sea ◽

Urban Areas ◽

Northern Iran

Download Full-text

Loess and Dune Sand as Indicators for Climate Change and Caspian Sea-Level Change in Northern Iran

10.46427/gold2020.742 ◽

2020 ◽

Author(s):

Manfred Frechen

Keyword(s):

Climate Change ◽

Sea Level ◽

Caspian Sea ◽

Sea Level Change ◽

Dune Sand ◽

Northern Iran ◽

Level Change

Download Full-text

Increased haplotype diversity of Emys orbicularis (Linnaeus, 1758) (Reptilia: Emydidae) in northern Iran

Ecologica Montenegrina ◽

10.37828/em.2021.45.5 ◽

2021 ◽

Vol 45 ◽

pp. 24-32

Author(s):

Seyyed Saeed Hosseinian Yousefkhani ◽

Amaal Gh. Yasser ◽

Murtada D. Naser ◽

Eskandar Rsategar-Pouyani

Keyword(s):

Caspian Sea ◽

Isolation By Distance ◽

Phylogenetic Analyses ◽

Haplotype Diversity ◽

Mantel Test ◽

Conservation Action ◽

The Caspian Sea ◽

Northern Iran ◽

Emys Orbicularis ◽

Southern Caspian Sea

Emys orbicularis is an Old World terrapin that has a wide distribution range from Russia to Iran, Europe, and Northwestern Africa. In this study, we compare the Southern Caspian Sea lineage (in northern Iran) of E. orbicularis with other lineages of this species in Europe using the Cyt b gene fragment. Based on our results, the Caspian Sea lineage shows a high value of PhiPT (> 0.87) in comparison with other lineages that means the lineage isolated more from other lineages. Molecular phylogenetic analyses indicate that Iranian and Caucasus lineages are distinct from other lineages. The Mantel test confirmed the pattern of isolation by distance for the lineages from Western Europe to Asia. These results indicate that the Iranian population has a long history in the Caucasian and Southern Caspian Sea region (> 6 MYA). There are many reasons to conserve this species in Iran, as high inbreeding rates, low genetic variability, accidental events on the roads, and pet trade must be considered in future conservation action plans.

Download Full-text