干旱区生态环境知识资源中心(Arid): PROVENANCE OF KARAKUM DESERT SAND (TURKMENISTAN): LITHIC-RICH OROGENIC SIGNATURE OF CENTRAL ASIAN DUNE FIELDS

Arid

	PROVENANCE OF KARAKUM DESERT SAND (TURKMENISTAN): LITHIC-RICH OROGENIC SIGNATURE OF CENTRAL ASIAN DUNE FIELDS
	Garzanti, Eduardo 1; Ghassemi, Mohammad R.2; Limonta, Mara 1; Resentini, Alberto 1
通讯作者	Garzanti, Eduardo
来源期刊	RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA
ISSN	0035-6883
EISSN	2039-4942
出版年	2019
卷号	125 期号:1 页码:77-89
英文摘要	Major deserts do not necessarily consist of eolian dunes as quartz-rich as those of the Great Nafud, Rub' al Khali, Sahara, and Mega-Kalahari sand seas accumulated in anorogenic settings of Arabia and Africa. The Karakum dune field of Turkmenistan is one of the several examples of central Asian deserts bound by recent or recently reactivated orogenic belts where eolian sand includes abundant sedimentary and subordinately metamorphic and volcanic lithic fragments. Feldspatho-litho-quartzose detrital modes and epidote-amphibole-garnet heavy-mineral suites of southern Karakum dune sand compare well with those in mountain branches of the Amu Darya, indicating provenance from the western Pamir mountains of Tajikistan in the east. Dunes closer to the Caspian Sea in the west contain additional carbonate or felsic volcanic grains which, together with decreasing heavy-mineral concentration and increasing ZTR indices, reveals local recycling of cover strata exposed in the Kopeh-Dagh and Balkhan zone. Our data suggest that the huge Amu Darya River, which in Plio-Pleistocene to historical times has repeatedly changed its course across Turkmenistan from westward toward the Caspian Sea to northward toward the Aral Sea, represents the major sediment source for the Karakum Desert. Together with the Taklamakan sand sea of the Tarim basin, the Ordos and adjacent deserts of northern China, and the Thal and Thar deserts of the western Himalayan foreland basin, the Karakum would thus represent another example of large dune field principally fed by one major fluvial feeder system.
英文关键词	Provenance of modern sand Heavy minerals Karakum Desert Amu Darya River Central Asia dune fields Fluvial feeder systems of eolian sand seas
类型	Article
语种	英语
国家	Italy ; Iran
收录类别	SCI-E
WOS记录号	WOS:000465614500004
WOS关键词	TRIASSIC EVOLUTION ; LOESS DEPOSITS ; YELLOW-RIVER ; ARAL SEA ; TURAN ; TRANSPORT ; PETROLOGY ; BASIN ; DISPERSAL ; SEDIMENTS
WOS类目	Geology ; Paleontology
WOS研究方向	Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218521
作者单位	1.Univ Milano Bicocca, Dept Earth & Environm Sci, Piazza Sci 4, I-20126 Milan, Italy; 2.Geol Survey Iran, Res Inst Earth Sci, Tehran, Iran
推荐引用方式 GB/T 7714	Garzanti, Eduardo,Ghassemi, Mohammad R.,Limonta, Mara,et al. PROVENANCE OF KARAKUM DESERT SAND (TURKMENISTAN): LITHIC-RICH OROGENIC SIGNATURE OF CENTRAL ASIAN DUNE FIELDS[J],2019,125(1):77-89.
APA	Garzanti, Eduardo,Ghassemi, Mohammad R.,Limonta, Mara,&Resentini, Alberto.(2019).PROVENANCE OF KARAKUM DESERT SAND (TURKMENISTAN): LITHIC-RICH OROGENIC SIGNATURE OF CENTRAL ASIAN DUNE FIELDS.RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA,125(1),77-89.
MLA	Garzanti, Eduardo,et al."PROVENANCE OF KARAKUM DESERT SAND (TURKMENISTAN): LITHIC-RICH OROGENIC SIGNATURE OF CENTRAL ASIAN DUNE FIELDS".RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 125.1(2019):77-89.