GEOCHEMISTRY, GEOCHRONOLOGY AND TECTONIC SETTING OF METAMORPHIC ROCKS FROM THE ZANJAN-TAKAB 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.

BAKHSHIZAD F.; GHORBANI GH.

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

Journal Paper

Paper Information

Journal: GEOSCIENCES Year:2015 | Volume:25 | Issue:97 Page(s): 361-374

Download Full-Text

Persian Verion

View:

1,164

Download:

Cites:

Information Journal Paper

Title

GEOCHEMISTRY, GEOCHRONOLOGY AND TECTONIC SETTING OF METAMORPHIC ROCKS FROM THE ZANJAN-TAKAB REGION

Author(s)

BAKHSHIZAD F. | GHORBANI GH. | Issue Writer Certificate

Keywords

MIGMATITESQ2

GNEISSQ2

UQ2

PB DATINGQ1

SRQ2

ND ISOTOPEQ2

HF ISOTOPEQ2

MODEL AGEQ2

CADOMIAN MAGMATISMQ2

Abstract

The Zanjan-Takab metamorphic complex includes para- and orthogneisses, amphibolites, various types of schists and MIGMATITES along with weakly metamorphosed, young magmatic dikes and lenses. In this study, we are focusing on the Zanjan-Takab metamorphic rocks from three regions including: 1- Almalu-Ghazi Kandi-Alam Kandi; 2- Qare Naz-Qozlu and 3- Zaki Kandi-Barut Aghasi. Orthogneisses and migmatite leucosomes from these regions show enrichment in light REEs relative to heavy REEs and are characterized by depletion in Nb-Ta. The Almalu-Ghazi Kandi-Alam Kandi orthogneiss zircons show U-Pb ages of 491-516 Ma, but with older inherited cores. Meta-tonalite zircons from this region yield magmatic ages of 24-26 Ma. Migmatite leucosomes, paragneisses and GNEISSic amphibolite from Qare Naz-Qozlu contains zircons with partial melting evidences at 25-28 Ma. Nd MODEL AGEs of migmatite leucosomes vary between 466 and 1629, but most of them show Ordovician and late Neoproterozoic Nd MODEL AGEs (TDM). The epsilon Hf (t) values of zircon rims from MIGMATITES are positive and their Hf MODEL AGEs vary between 400 and 700 Ma. According to this study, it seems that in addition to the presence of old metamorphic rocks (~500 Ma) in the Zanjan-Takab region, there are weakly (to intensely) metamorphosed, but young (38-24 Ma) magmatic rocks in this area. Furthermore, although the CADOMIAN MAGMATISM in the Zanjan-Takab region is conspicuous, but this magmatism is younger relative to other Cadomian outcrops of Iran. It seems that the exhumation of GNEISSic rocks and hence migmatization in this region can be related to core complex formation due to the extensional phases in the Iranian plate, resulted from roll-back of Neotethyan subducted slab beneath Iran.

Cites

No record.

References

No record.

Cite

APA: Copy

BAKHSHIZAD, F., & GHORBANI, GH.. (2015). GEOCHEMISTRY, GEOCHRONOLOGY AND TECTONIC SETTING OF METAMORPHIC ROCKS FROM THE ZANJAN-TAKAB REGION. GEOSCIENCES, 25(97), 361-374. SID. https://sid.ir/paper/32387/en

Vancouver: Copy

BAKHSHIZAD F., GHORBANI GH.. GEOCHEMISTRY, GEOCHRONOLOGY AND TECTONIC SETTING OF METAMORPHIC ROCKS FROM THE ZANJAN-TAKAB REGION. GEOSCIENCES[Internet]. 2015;25(97):361-374. Available from: https://sid.ir/paper/32387/en

IEEE: Copy

F. BAKHSHIZAD, and GH. GHORBANI, “GEOCHEMISTRY, GEOCHRONOLOGY AND TECTONIC SETTING OF METAMORPHIC ROCKS FROM THE ZANJAN-TAKAB REGION,” GEOSCIENCES, vol. 25, no. 97, pp. 361–374, 2015, [Online]. Available: https://sid.ir/paper/32387/en

Related Journal Papers