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Chaka Granite

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Journal Article
Journal: GSA Bulletin
Published: 01 September 2011
GSA Bulletin (2011) 123 (9-10): 2016–2030.
... faults, the Haiyuan-Qilianshan and Kunlun faults, two obvious right-lateral, strike-slip faults strike north-northwest: the Elashan fault along western side of the Gonghe-Chaka basin and the Riyueshan fault east of the lake Qinghai ( Fig. 1 ). Both reflect late Cenozoic tectonic deformation. Figure...
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Journal Article
Journal: Geosphere
Published: 01 December 2014
Geosphere (2014) 10 (6): 1255–1282.
... reverse fault–bounded ranges to the SW of the Elashan fault, in the Dulan-Chaka highland ( Fig. 2 ), from 17 to 12 Ma ( Duvall et al., 2013 ). Combined Pleistocene slip rates and offset piercing points along the Riyueshan fault, at the eastern terminus of the Qinghai Nan Shan, suggest that this structure...
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Journal Article
Journal: Geosphere
Published: 16 January 2019
Geosphere (2019) 15 (2): 423–432.
... of Qilian town ( Fig. 2A ). Ten samples collected at ∼100–200 m elevation intervals, covering a range of elevations from 2800 to 4100 m across the mountain. The units sampled are Cretaceous, Permian, Triassic, and Ordovician sandstones, Cambrian and Precambrian metamorphic rocks, and early Paleozoic granite...
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Journal Article
Published: 01 October 2012
Geochemical Perspectives (2012) 1 (4-5): 585–595.
... solubilities. One of the major reservoirs of Pb in Earth’s crust is K-feldspar, where Pb 2+ substitutes for K + , with K-feldspars in granites having a mean Pb concentration of ∼50 ppm ( Nriagu, 1978 ). Divalent lead occurs in a variety of coordination geometries with oxygen in metal oxides and hydroxides...
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Journal Article
Journal: Lithosphere
Published: 01 February 2016
Lithosphere (2016) 8 (1): 58–82.
... and metasedimentary units, and Permian–Triassic granitoids are exposed in the Ela Shan and Dulan-Chaka highland ( Fig. 2 ). These ranges divide the Qaidam Basin from Cenozoic intermontane basins of northeastern Tibet. Basement is composed of early Proterozoic high-grade metamorphic rocks, Paleozoic–Mesozoic...
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Journal Article
Published: 01 October 2012
Geochemical Perspectives (2012) 1 (4-5): 490–508.
...). This group was joined in a successful 2004 NSF-EMSI proposal by Hendrik Bluhm (LBNL), Anne Chaka (now at Pacific Northwest National Laboratory; PNNL), Kevin Rosso (PNNL), Miquel Salmeron (LBNL), and Tom Trainor . My Paris colleagues Karim Benzerara , Georges Calas , Francois Farges , Farid...
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Journal Article
Journal: GSA Bulletin
Published: 12 June 2019
GSA Bulletin (2020) 132 (1-2): 310–320.
... by the positive topography of the Altyn Tagh Fault, the Qilian-Nan Shan, the Kunlun Shan, and the Dulan-Chaka highland and Ela Sha to the northwest, northeast, south, and east, respectively ( Fig. 1 ). The origin of the basin is debated, with various authors referring to it as a successor basin ( Graham et al...
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Journal Article
Journal: Lithosphere
Published: 01 December 2011
Lithosphere (2011) 3 (6): 420–438.
... of several depocenters, which are referred to here as the Gonghe, Tongde, and Chaka subbasins ( Fig. 2 ). Each of these contains strata deposited unconformably atop a basement of complexly deformed Triassic rocks ( Fig. 1 ). Despite the potential tectonic significance of these sedimentary archives...
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Series: Geological Society, London, Special Publications
Published: 01 January 2011
DOI: 10.1144/SP353.10
EISBN: 9781862396012
... in October 2004). The NW–SE-trending Waligong Shan is composed of two massifs, the western and eastern Waligong, each one bounded to the east by active west- to SW-dipping thrusts (Fig.  2 ). The western Waligong thrust juxtaposes the Waligong granite on top of red sandstones of Late Miocene–Pliocene age...
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Journal Article
Published: 19 December 2018
Geological Magazine (2019) 156 (9): 1527–1546.
.... Previous studies of the Oulongbuluke Block focused on the evolution of the Precambrian metamorphic basement (Chen et al. 2007 , 2013 ; Huang et al. 2011 ; Yu et al. 2017 ) and on the granites and volcanic rocks (Wu et al. 2008 , 2016 ; Feng et al. 2015 ). Some studies suggested that the mafic...
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Journal Article
Published: 01 February 2013
The Canadian Mineralogist (2013) 51 (1): 5–14.
... Bea F. ( 2003 ) Crystal chemistry of dioctahedral micas from peraluminous granites: The Pedrobernardo pluton (central Spain) . European Journal of Mineralogy 15 , 543 – 550 . doi: 10.1127/0935-1221/2003/0015-0543 Bhattacharyya K.G. ( 1993 ) XPS study of mica surfaces . Journal...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2016
GSA Bulletin (2016) 128 (3-4): 355–373.
... Formation and the early Carboniferous Riwan Chaka Formation, and it is overlain by Quaternary sediments ( Fig. 1C ). The Chameng Formation is composed of quartzite, low-grade metamorphic slate and phyllite, and sandstone. The age of these rocks is still under debate; some regarded it as Precambrian ( BGMR...
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Journal Article
Journal: Lithosphere
Published: 01 December 2013
Lithosphere (2013) 5 (6): 555–574.
... are truncated by seismically transparent regions interpreted as early Paleozoic granitic intrusions (unit Pzgr) with irregular shapes. The seismically transparent lower crust and its immediate upward extension in the middle crust are interpreted as dominantly intermediate plutons based on the seismic speed...
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Journal Article
Journal: Geosphere
Published: 01 April 2016
Geosphere (2016) 12 (2): 501–532.
...—Neogene; O(gr)—Ordovician granite; P—Paleogene; Pt—Proterozoic; Pz—Paleozoic; Q—Quaternary; S—Silurian; Tr—Triassic; Vp—P wave velocity. Figure 4. Selected examples of existing cross sections and shortening estimates across northern Tibet. Locations are shown in Figure 3 . Cross sections were...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2013
GSA Bulletin (2013) 125 (3-4): 377–400.
...%), light-green sandstones and mudstone (33%), granite (20%), and brown sandstone (12%) near the Haiyuan county. Blue mudstone (80%–90%), bright-green to yellow mudstone/or fine-grained sandstone (7%), and orange-red mudstone (<5%) were observed in the southern part of Madong Shan ( Fig. 7B...
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Journal Article
Journal: Lithosphere
Published: 01 June 2016
Lithosphere (2016) 8 (3): 293–316.
... (e.g., Korup et al., 2010 ). In fact, one such ice dam is located at the western edge of the Zedong Gorge where the north-trending Woka basin intersects the Yarlung River ( Fig. 4 ) ( Korup et al., 2010 ). At the site of this inferred ice dam are glacial-wash deposits consisting dominantly of granitic...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2012
GSA Bulletin (2012) 124 (5-6): 657–677.
...., 2007 ). Our new analyses from catchments draining Proterozoic units (samples Pr2 and Pr3, Fig. 10A ) show that they lack a distinctive age signature but instead are dominated by ca. 450 Ma zircons, likely from abundant granitic dikes within the unit. Facies C contains brown and red-brown...
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Journal Article
Journal: Economic Geology
Published: 01 May 2007
Economic Geology (2007) 102 (3): 347–378.
... district, has led to the discovery of new gold ore reserves (mainly bulk mineable ores), including open-pit operations near Indarama ( Buchholz et al., 1998 )—the Globe and Phoenix, Chaka’s Pride, and Dalling mines. However, not much research has been carried out on the genesis and metallogeny of the gold...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 49 (1): 1–115.
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