Facies, depositional environments and sequence stratigraphy of the Lower Jurassic Neyriz Formation in the Fars region

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

JALILIAN A.H.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: GEOSCIENCES Year:2018 | Volume:27 | Issue:106 Page(s): 45-56

Download Full-Text

Persian Verion

View:

575

Download:

Cites:

Information Journal Paper

Title

Facies, depositional environments and sequence stratigraphy of the Lower Jurassic Neyriz Formation in the Fars region

Author(s)

JALILIAN A.H. | Issue Writer Certificate

Keywords

Neyriz FormationQ1

Fars regionQ2

Eastern ZagrosQ2

Farhad supersequenceQ1

Abstract

The Neyriz Formation comprises the lowermost Jurassic strata in Fars area and the last lithostratigraphc unit of the Kazerun Group in the Zagros fold-thrust belt. This study focuses on facies analysis, reconstruction of depositional environments and sequence stratigraphy analysis of the Lower Jurassic Neyriz Formation in its type locality with a thickness of 233 m and Surmeh Mountain with a thickness of 68m in Fars region. Results indicate that the Neyriz Formation consists mainly of carbonates and shale with minor constituents of limestone conglomerates and glauconite-arenite in the middle part of the type section and calclithite sandstones in Surmeh section. Available evidences confirm that this carbonate-clastic succession deposited in various part of a confined and shallow sea (epicontinental) in south of the Main Zagros Reverse fault line. The lower part of the Neyriz Formation is composed of dolomudstone and shale facies with subordinate limestones deposited in a ramp platform due to the first transgression of Jurassic sea over the eastern part the Zagros fold-thrust belt. The subsequent sea-level fall resulted in increased clastic influx and led to development of coastal plain and restriction of carbonate production to the southern part of the platform. This drastic change of sedimentary regime led to the expanding of a tide-dominated estuary system in the High Zagros Belt and the deposition of clastic facies in the middle part of the Neyriz Formation. The clastic unit that pinches out towards the southwest is thought to have received its clastic input from the northeast and it may well be related to the Lower Jurassic continental siliciclastics (Shemshak equivalent) of the Sanandaj-Sirjan Zone. As evidenced by the limitation of clastic influx and reestablishment of the carbonate factory, during the subsequent Early Jurassic sea level had risen steadily and platform flooded again. Vertical facies variations and comparison with global sea level curve reveal that the Neyriz Formation encompasses a second-order depositional sequence that correlates with the lower part of Farhad supersequence (Jurassic of the Zagros Basin). The given sequence by itself includes two unconformity bounded third-order sequences deposited in the middle Liassic time (Sinemurian-Pliensbachian).

Cites

No record.

References

No record.

Cite

APA: Copy

JALILIAN, A.H.. (2018). Facies, depositional environments and sequence stratigraphy of the Lower Jurassic Neyriz Formation in the Fars region. GEOSCIENCES, 27(106 ), 45-56. SID. https://sid.ir/paper/32100/en

Vancouver: Copy

JALILIAN A.H.. Facies, depositional environments and sequence stratigraphy of the Lower Jurassic Neyriz Formation in the Fars region. GEOSCIENCES[Internet]. 2018;27(106 ):45-56. Available from: https://sid.ir/paper/32100/en

IEEE: Copy

A.H. JALILIAN, “Facies, depositional environments and sequence stratigraphy of the Lower Jurassic Neyriz Formation in the Fars region,” GEOSCIENCES, vol. 27, no. 106 , pp. 45–56, 2018, [Online]. Available: https://sid.ir/paper/32100/en

Related Journal Papers