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Darya Deposit

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Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2007
DOI: 10.1306/1205845St553000
EISBN: 9781629810348
.... The three delta systems exhibit significant differences in depositional style and timing, reacting in different ways to the rising lake level. Strong progradation of the paleo-Amu Darya delta occurred on the Turkmenistan shelf, on the eastern margin of the South Caspian Basin. This progradation is related...
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Journal Article
Published: 01 December 2004
Mineralogical Magazine (2004) 68 (6): 871–885.
... with the Darya and Kondyor PGM occurrences. The formation of the large euhedral PGM crystals could be related to residual pegmatitic fluids at much lower temperature than common in magmatic PGE deposits. A similar situation applies to the Tweefontein area, South Africa, where large euhedral crystals...
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Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... was related to the interaction of basin subsidence, a fall in eustatic sea-level and sediment supply. Subsequent marine transgression in the Late Barremian, partially related to broad thermal subsidence in the Amu-Darya Basin, resulted in the deposition of an extensive Late Cretaceous clay–marl succession...
Journal Article
Journal: AAPG Bulletin
Published: 01 December 1968
AAPG Bulletin (1968) 52 (12): 2396–2421.
... and Syr Darya, flow southeast out of the Pamir Mountains, cross the Turanian Lowland, and empty into the Aral Sea. These and several other smaller rivers are now depositing fluvial sediment on the lowland ( Fig. 4 ). The Caspian Sea is separated from the Turanian Lowland by the Ust-Yurt Plateau, which...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 08 February 2021
Lithosphere (2021) 2021 (1): 6697858.
... deposits of a terrestrial environment. Apparently, parts of the Pennsylvanian and the lower Permian sequence are missing in this section or are extremely condensed compared to the Altyn Darya section. New field observations from the Bostantielieke valley, between Qimgan/Akqi and Gez, show...
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Series: AAPG Memoir, AAPG Memoir
Published: 01 January 2012
DOI: 10.1306/13291385M953446
EISBN: 9781629810096
... in the delivery of large volumes of sediment and water from the Russian Platform, Caucasus mountains, and Kopet-Dagh mountains to the South Caspian Basin through the Paleo Volga, Kura, and Amu darya/Uzboy rivers. Within the South Caspian Basin, fluvial and fluvio-lacustrine facies were deposited in preexisting...
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Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... Abstract The Kyzylkum and south Nuratau areas of Central Uzbekistan form the westernmost parts of the Tien Shan and contain rare outcrops of Cretaceous rocks that were deposited along the northern margin of the Amu Darya Basin. The succession can be subdivided into 18 clastic and carbonate...
Series: SEPM Special Publication, SEPM Special Publication
Published: 01 January 2005
DOI: 10.2110/pec.05.83.0231
EISBN: 9781565762190
.... Also the Kura and Amu Darya Rivers must have then drained towards the Black Sea through their respective canyons. Around 5.5 Ma tectonic uplift might have severed the connection between the Black Sea and the Caspian, the Volga became diverted southwards towards the South Caspian Basin, and deposition...
Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2007
DOI: 10.1306/1205842St553252
EISBN: 9781629810348
... loading and thermal cooling resulted in high subsidence rates, evidenced by thick high-frequency third-order sequences. A large Pliocene westward-prograding deltaic system from the paleo-Amu Darya river deposited a clastic section of nearly 6000 m (19,686 ft) in thickness known as the Red Color group...
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Journal Article
Published: 09 November 2017
Petroleum Geoscience (2018) 24 (3): 247–257.
... a ) as the Juba-Lamu Basin in the SW, the Coriole Basin in the area around Mogadishu and the Obbia Basin to the NE, as shown in Figure 2 . However, the deep-water offshore basins are sufficiently different in depositional setting and tectonic development that a separate basin nomenclature is appropriate...
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Journal Article
Published: 01 December 2005
Mineralogical Magazine (2005) 69 (6): 981–994.
... sediments in the Darya river, Aldan Shield, Russia. The primary PGM assemblage underwent alteration with formation of a very fine-grained mixture of Pd-bearing oxides and hydrated oxides. The Pd oxide/hydrated oxide aggregates (up to 100 μm wide and ~1 mm long) occur along crystallographic planes, on grain...
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Journal Article
Published: 01 February 2004
Environmental and Engineering Geoscience (2004) 10 (2): 151–168.
... point on the dam crest currently is approximately 50 m (∼165 ft), and the lake is rising at an average rate of 18.5 cm/yr (7.3 in./yr). If the blockage were to fail, a worst-case scenario could endanger tens or possibly hundreds of thousands of people in the Murgab, Bartang, Panj, and Amu Darya valleys...
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Journal Article
Journal: Geology
Published: 06 September 2019
Geology (2019) 47 (11): 1020–1024.
...Alexander P. Hammond; Alan R. Carroll; Ethan C. Parrish; M. Elliot Smith; Tim K. Lowenstein Abstract Deposition of trona, nahcolite, and other Na-carbonate evaporite minerals in lakes is commonly closely associated with active volcanism, suggesting that the excess alkalinity required...
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Journal Article
Published: 01 May 2007
Vadose Zone Journal (2007) 6 (2): 406–412.
... accurately field calibrated NMMs at six locations in Uzbekistan, in soils ranging from deep, uniform silt loams of loessial origin to highly stratified alluvial soils near the Amu Darya River. In all soils, separate calibrations were found for the 10-cm depth due to closeness to the soil–air interface. Near...
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Journal Article
Journal: Economic Geology
Published: 01 November 2015
Economic Geology (2015) 110 (7): 1907–1908.
.... Chapter 5 provides a comprehensive review of Afghanistan’s four major drainage basins, each of which converge on a major river; the Amu Darya, the Hari Rud, the Hilmand-Arghandab, and the Kabul. The lakes of Afghanistan are classified based on genesis and the subject of groundwater is touched on briefly...
Journal Article
Published: 01 June 2018
Mineralogical Magazine (2018) 82 (3): 725–749.
...Thomas Oberthür; Frank Melcher; Tobias Fusswinkel; Alfons M. van den Kerkhof; Graciela M. Sosa ABSTRACT The Waterberg platinum deposit is an extraordinary example of a vein-type hydrothermal quartz-hematite-PGE (platinum-group element) mineralization. This study concentrates on the geochemical...
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Series: Geological Society
Published: 01 January 2017
EISBN: 9781862399594
... and central parts of Central Asia their presence coincides with the onset of carbonate and glauconitic sand deposition. In the Ustyurt and Amu Darya regions the stage represents a marine transgression. In the uppermost Bajocian, regressive conditions led to the deposition of lagoonal sediments with coal-rich...
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1999
AAPG Bulletin (1999) 83 (7): 1135–1160.
..., 1968 ; Fedynsky et al., 1972 ) ( Figure 4 ), whereas only 800 m of Neogene-Quaternary sediments were deposited along the northern flank of the rising Elbourz mountains south of the Caspian Sea depression (e.g., Berberian, 1983 ). On the Celekhan peninsula ( Figure 5 ), however, we have observed...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1991
AAPG Bulletin (1991) 75 (2): 313–325.
.... The location and distribution of oil and gas deposits in the section of a basin, prevailing types of traps, and scale of potential resources are all features influenced by the geodynamic type of the basin. One of the most peculiar basins of the intracontinental type is the West Siberian basin ( Figure 3...
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Journal Article
Published: 01 July 2006
Journal of the Geological Society (2006) 163 (4): 647–655.
... of the Main Uralian Fault, record the accretion of arcs to the craton in the late Palaeozoic. Phanerozoic sediments deposited across the craton are presumably derived from a combination of the Precambrian basement blocks and the Uralian orogenic belt, but there are few provenance details based on radiometric...
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