干旱区生态环境知识资源中心(Arid): Application of Spectral Angle Mapper Classification to Discriminate Hydrothermal Alteration in Southwest Birjand, Iran, Using Advanced Spaceborne Thermal Emission and Reflection Radiometer Image Processing

Arid

	Application of Spectral Angle Mapper Classification to Discriminate Hydrothermal Alteration in Southwest Birjand, Iran, Using Advanced Spaceborne Thermal Emission and Reflection Radiometer Image Processing
	Maryam Abdi; Karimpour Mohammd H
来源期刊	Acta Geologica Sinica
ISSN	1000-9515
出版年	2012
卷号	86 期号:5 页码:1289-1296
英文摘要	The purpose of this study is to evaluate the Spectral Angle Mapper (SAM) classification method for determining the optimum threshold (maximum spectral angle) to unveil the hydrothermal mineral assemblages related to mineral deposits. The study area indicates good potential for Cu-Au porphyry, epithermal gold deposits and hydrothermal alteration well developed in arid and semiarid climates, which makes this region significant for Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image processing analysis. Given that achieving an acceptable mineral mapping requires knowing the alteration patterns, petrochemistry and petrogenesis of the igneous rocks while considering the effect of weathering, overprinting of supergene alteration, overprinting of hypogene alteration and host rock spectral mixing, SAM classification was implemented for argillic, sericitic, propylitic, alunitization, silicification and iron oxide zones of six previously known mineral deposits: Maherabad, a Cu-Au porphyry system; Sheikhabad, an upper part of Cu-Au porphyry system; Khoonik, an Intrusion related Au system; Barmazid, a low sulfidation epithermal system; Khopik, a Cu-Au porphyry system; and Hanish, an epithermal Au system. Thus, the investigation showed that although the whole alteration zones are affected by mixing, it is also possible to produce a favorable hydrothermal mineral map by such complementary data as petrology, petrochemistry and alteration patterns.
英文关键词	hydrothermal alteration Spectral Angle Mapper Advanced Spaceborne Thermal Emission and Reflection Radiometer image process Iran
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4657195
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335166
作者单位	Maryam Abdi, Department of Geology, Ferdowsi University of Mashhad, Mashhad, Iran.; Karimpour Mohammd H, Research Center for Ore Deposit of Eastern Iran, Ferdowsi University of Mashhad, Mashhad, Iran.
推荐引用方式 GB/T 7714	Maryam Abdi,Karimpour Mohammd H. Application of Spectral Angle Mapper Classification to Discriminate Hydrothermal Alteration in Southwest Birjand, Iran, Using Advanced Spaceborne Thermal Emission and Reflection Radiometer Image Processing[J],2012,86(5):1289-1296.
APA	Maryam Abdi,&Karimpour Mohammd H.(2012).Application of Spectral Angle Mapper Classification to Discriminate Hydrothermal Alteration in Southwest Birjand, Iran, Using Advanced Spaceborne Thermal Emission and Reflection Radiometer Image Processing.Acta Geologica Sinica,86(5),1289-1296.
MLA	Maryam Abdi,et al."Application of Spectral Angle Mapper Classification to Discriminate Hydrothermal Alteration in Southwest Birjand, Iran, Using Advanced Spaceborne Thermal Emission and Reflection Radiometer Image Processing".Acta Geologica Sinica 86.5(2012):1289-1296.