THE STUDY OF JURASSIC-CRETACEOUS BOUNDARY IN CENTRAL PART OF NORTHERN ALBORZ, POL-E-ZOGHAL SECTION (ROAD OF CHALOOS)

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YARIJOO ESLAM; HAMDI BAHAEDDIN; VAZIRI SEYED HAMID

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Journal: JOURNAL OF THE EARTH Year:2009 | Volume:4 | Issue:3 Page(s): 21-36

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Title

THE STUDY OF JURASSIC-CRETACEOUS BOUNDARY IN CENTRAL PART OF NORTHERN ALBORZ, POL-E-ZOGHAL SECTION (ROAD OF CHALOOS)

Author(s)

YARIJOO ESLAM | HAMDI BAHAEDDIN | VAZIRI SEYED HAMID | Issue Writer Certificate

Keywords

SHEMSHAK FORMATIONQ3

TIZKUH FORMATIONQ2

CENTRAL ALBORZQ2

Abstract

For the determine of Jurassic-Cretaceous boundary, a stratigraphic section in northern slopes CENTRAL ALBORZ was studied in southern Chalous (Pol-e-Zoghal section) with a thickness of 2913 meters. In the studied section, Jurassic rocks with a thickness of 657 meters, consist mainly of sandstone, shale, with coal beds (SHEMSHAK FORMATION) which overlaying by 2256 meters thickness deposits, consist of conglomerates, sandstone, shale of Early Cretaceous (Tizkuh Formation).In the studied section the sequences of Dalichai and Lar formations do not exist. Gap these formations could be the result of emergence of the studied region from water at the end of Early Jurassic, created due to the orogenic movements of Middle Cimmerian (Batonian tectonic). As a result, the Jurassic-Cretaceous boundary in this section is unconformity. Further advance of the sea has occurred during Aptian period when warm climate prevailed in the region and benthic organisms, particularly Orbitolinidae family including Dictyoconus arabicus, Iraqia simplex and Orbitolina discoidea lived in the warm and shallow sea of the period. During Aptian period many volcanic activities have also occurred. Of course, there is a weak possibility that the absence of Neocomian and Barremian deposits have been coincide with Late Cimmerian orogenic movements.On the basis of lithofacies, 12 lithologic units have been distinguished. According to the fromainiforal study, the following biozone of with Early Cretaceous (Aptian) age have been Dictyoconus arabicus-Iraqia simplex Assemblage Zone introduced.

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APA: Copy

YARIJOO, ESLAM, HAMDI, BAHAEDDIN, & VAZIRI, SEYED HAMID. (2009). THE STUDY OF JURASSIC-CRETACEOUS BOUNDARY IN CENTRAL PART OF NORTHERN ALBORZ, POL-E-ZOGHAL SECTION (ROAD OF CHALOOS). JOURNAL OF THE EARTH, 4(3), 21-36. SID. https://sid.ir/paper/192990/en

Vancouver: Copy

YARIJOO ESLAM, HAMDI BAHAEDDIN, VAZIRI SEYED HAMID. THE STUDY OF JURASSIC-CRETACEOUS BOUNDARY IN CENTRAL PART OF NORTHERN ALBORZ, POL-E-ZOGHAL SECTION (ROAD OF CHALOOS). JOURNAL OF THE EARTH[Internet]. 2009;4(3):21-36. Available from: https://sid.ir/paper/192990/en

IEEE: Copy

ESLAM YARIJOO, BAHAEDDIN HAMDI, and SEYED HAMID VAZIRI, “THE STUDY OF JURASSIC-CRETACEOUS BOUNDARY IN CENTRAL PART OF NORTHERN ALBORZ, POL-E-ZOGHAL SECTION (ROAD OF CHALOOS),” JOURNAL OF THE EARTH, vol. 4, no. 3, pp. 21–36, 2009, [Online]. Available: https://sid.ir/paper/192990/en

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