APPLICATION OF IMMOBILE TRACE ELEMENTS TH - CO IN CLASSIFICATION OF METAMORPHOSED AND WEATHERED VOLCANIC ROCKS: EVIDENCES OF CRETACEOUS VOLCANIC ROCKS AT SAGHEZ – PIRANSHAHR AREA

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.

TARKHANI M.S.; VOSSOUGHI ABEDINI M.; MASOUDI F.; BAHARVAND N.

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

Journal Paper

Paper Information

Journal: Iranian Journal of Geology Year:2010 | Volume:3 | Issue:12 Page(s): 77-89

Download Full-Text

Persian Verion

View:

1,482

Download:

Cites:

Information Journal Paper

Title

APPLICATION OF IMMOBILE TRACE ELEMENTS TH - CO IN CLASSIFICATION OF METAMORPHOSED AND WEATHERED VOLCANIC ROCKS: EVIDENCES OF CRETACEOUS VOLCANIC ROCKS AT SAGHEZ – PIRANSHAHR AREA

Author(s)

TARKHANI M.S. | VOSSOUGHI ABEDINI M. | MASOUDI F. | BAHARVAND N. | Issue Writer Certificate

Keywords

CRETACEOUS VOLCANIC UNITQ2

ELEMENT MOBILITYQ3

PIRANSHAHRQ3

SAGHEZQ2

SANANDAJ-SIRJAN ZONEQ3

Abstract

It has long been recognized that the TAS diagram is not robust in classifying altered volcanic rocks and proxies using more immobile elements have been developed for that purpose. Through recent years, researchers introduced new discrimination plot based on immobile Th-Co elements as proxies of K and SiO2 are very useful to classify metamorphosed and weathered rocks especially in volcanic arc successions.The application of different elements, especially Th and Co, in classification of the Cretaceous volcanic rocks in SAGHEZ-Piranshahr area is examined here. Based on petrographic studies, these rocks are andesites and basaltic andesites. Also sub-volcanic and related pyroclastic rocks accompany them.Low grade metamorphism in green schist facies and weathering process are affected studied rocks. Secondary minerals, such as epidote, chlorite, tremolite, actinolite, prehnite, pumpellyite, sphene, iron oxides, calcite and quartz, observed and are products of low grade metamorphism and alteration. Microprobe analysis reveal that plagioclase composition became homogenized (albitization). Rare K-Feldspar crystals are formed within rock matrix.CRETACEOUS VOLCANIC UNITs in SAGHEZ-Piranshahr area formed in a volcanic arc due to obvious negative Nb anomalies in spider diagrams normalized to MORB. Samples show scattered patterns by using ordinary classification methods which use main oxides or some trace elements, therefore their nature and type could not be clearly recognized. But, Th-Co diagram let us to classify them as calc-alkaline basalts, basaltic andesites and andesites. Therefore, Th and Co are efficient tools for recognition of magma nature and rock types in such metamorphosed and weathered rocks.

Cites

No record.

References

No record.

Cite

APA: Copy

TARKHANI, M.S., VOSSOUGHI ABEDINI, M., MASOUDI, F., & BAHARVAND, N.. (2010). APPLICATION OF IMMOBILE TRACE ELEMENTS TH - CO IN CLASSIFICATION OF METAMORPHOSED AND WEATHERED VOLCANIC ROCKS: EVIDENCES OF CRETACEOUS VOLCANIC ROCKS AT SAGHEZ – PIRANSHAHR AREA. IRANIAN JOURNAL OF GEOLOGY, 3(12), 77-89. SID. https://sid.ir/paper/129473/en

Vancouver: Copy

TARKHANI M.S., VOSSOUGHI ABEDINI M., MASOUDI F., BAHARVAND N.. APPLICATION OF IMMOBILE TRACE ELEMENTS TH - CO IN CLASSIFICATION OF METAMORPHOSED AND WEATHERED VOLCANIC ROCKS: EVIDENCES OF CRETACEOUS VOLCANIC ROCKS AT SAGHEZ – PIRANSHAHR AREA. IRANIAN JOURNAL OF GEOLOGY[Internet]. 2010;3(12):77-89. Available from: https://sid.ir/paper/129473/en

IEEE: Copy

M.S. TARKHANI, M. VOSSOUGHI ABEDINI, F. MASOUDI, and N. BAHARVAND, “APPLICATION OF IMMOBILE TRACE ELEMENTS TH - CO IN CLASSIFICATION OF METAMORPHOSED AND WEATHERED VOLCANIC ROCKS: EVIDENCES OF CRETACEOUS VOLCANIC ROCKS AT SAGHEZ – PIRANSHAHR AREA,” IRANIAN JOURNAL OF GEOLOGY, vol. 3, no. 12, pp. 77–89, 2010, [Online]. Available: https://sid.ir/paper/129473/en

Related Journal Papers