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Changma Basin

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Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP382.1
EISBN: 9781862396463
... is also correlative to the upper part of the Globigerinoides blowii biozone (Fig. 4 ). Regardless of the placement of the boundary between these two biozones, we can narrow down the age of the lacustrine Xiagou Formation strata in the Changma Basin to between 124 and 120 Ma ( Gradstein et al. 2004...
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Journal Article
Published: 18 May 2006
Canadian Journal of Earth Sciences (2006) 43 (5): 547-554.
... : Near the town of Changma in the Changma Basin of northwestern Gansu Province, China (Fig.  1 ). HORIZON : Lower Cretaceous (?Aptian–Albian) Xiagou Formation, middle unit of the Xinminpu Group. DESCRIPTION: Humerus : The preserved portion of the humerus (Figs.  2 , 3 ) is exposed...
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Journal Article
Published: 01 April 2010
Bulletin of the Seismological Society of America (2010) 100 (2): 541-561.
... ). The Changma fault in section B strikes N70°W and dips southwest for a length of 50 km, where it is located along the southeastern edge of the Changma basin. This section is characterized by discontinuous fault scarps that indicate left-lateral strike-slip motion with minor reverse offset and steplike mole...
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Journal Article
Journal: GSA Bulletin
Published: 28 February 2019
GSA Bulletin (2019) 131 (7-8): 1157-1178.
... Indo-Asian collision. The Qaidam Basin is the largest sedimentary basin within the plateau and bound to the northwest by the active Altyn Tagh fault (ATF), the largest and most prominent structure within the fault system. Here we use an extensive grid of high-resolution seismic reflection data from...
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Journal Article
Journal: Lithosphere
Published: 13 April 2017
Lithosphere (2017) 9 (4): 545-560.
... that between the parallel mountain ranges on the NE Tibetan Plateau, intramontane basins (such as the Dahe region, the Heihe valley, the Changma He valley, and the Danghe valley) are also experiencing a certain amount of shortening and uplift above a south-dipping décollement. Uplift and folding...
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Journal Article
Published: 01 November 2010
Bulletin of the Seismological Society of America (2010) 100 (5B): 2713-2735.
... are required to explain the topographic slopes within the range front and basin. The low taper within the basin is consistent with a weak detachment ( δ f ≈0.1), while a slightly stronger ( δ f ≈0.3–0.4) detachment is necessary to explain the higher taper of the range front. This difference may relate...
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Journal Article
Journal: Geosphere
Published: 01 April 2013
Geosphere (2013) 9 (2): 342-354.
... and the low slip rates of these thrust faults are related. The total shortening in the direction parallel to the Altyn Tagh fault in the Yumen Basin of 0.90–1.43 mm a −1 attests that left-lateral strike slip at the eastern end of the fault has indeed been absorbed by deformation within the Yumen Basin. We...
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Journal Article
Published: 19 June 2014
Geological Magazine (2014) 152 (1): 166-175.
... Q. , Li D. & You H.-L. 2013 b . A new turtle from the Xiagou Formation (Early Cretaceous) of Changma Basin, Gansu Province, P. R. China . Palaeobiodiversity...
FIGURES
Journal Article
Journal: Geosphere
Published: 16 January 2019
Geosphere (2019) 15 (2): 423-432.
... elongated intermountain basins, e.g., the Changma, Qilian, Menyuan, and Hala Lake Basins ( Meyer et al., 1998 ; Tapponnier et al., 2001 ). These elongated ranges and intermountain basins are typically bounded by growing folds and active thrusts (e.g., Tapponnier et al., 1990 ; Meyer et al., 1998 ; Yuan...
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Image
A digital elevation map of the northeast Tibetan Plateau showing the topogr...
Published: 01 June 2017
Figure 1. A digital elevation map of the northeast Tibetan Plateau showing the topographic features of the Qilian Shan and location of the Qaidam Basin and Hexi Corridor basin in the south and north flanks of the Qilian Shan, respectively. SQLS—southern Qilian Shan, CQLS—central Qilian Shan, NQLS
Image
The progressive deformational model of the Qilian Shan in the Cenozoic. See...
Published: 01 June 2017
—Hexi Corridor basin, SQLS—southern Qilian Shan, CQLS—central Qilian Shan, NQLS—northern Qilian Shan, NQLF—northern Qilian fault, HYF—Haiyuan fault, CMF—Changma fault, NQDF—north Qaidam fault.
Journal Article
Published: 01 May 2017
Journal of Sedimentary Research (2017) 87 (5): 486-499.
... emerging from the Early Cretaceous of the Changma Basin, in Gansu Province appears to show a transitional assemblage of the more primitive enantiornithine birds and the ornithuromorph birds, the same lineage from which modern birds originate ( Wang et al. 2015 ). The goal of this study is to better...
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Image
Simplified geologic map of the Hexi Corridor and adjacent regions showing d...
Published: 01 April 2010
) on the Altyn Tagh and Haiyuan faults and reverse slip (crustal shortening) on the active thrusts around the Qaidam basin, Qilian Shan, and Hexi Corridor. AA′ is the location of the geological cross section in Figure  3a . 1, Hanxia–Dahuanggou thrust; 2, Changma fault; 3, Jiayuguan thrust; 4, Fudongmiao
Journal Article
Journal: Lithosphere
Published: 01 June 2017
Lithosphere (2017) 9 (3): 408-416.
...Figure 1. A digital elevation map of the northeast Tibetan Plateau showing the topographic features of the Qilian Shan and location of the Qaidam Basin and Hexi Corridor basin in the south and north flanks of the Qilian Shan, respectively. SQLS—southern Qilian Shan, CQLS—central Qilian Shan, NQLS...
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Series: Geological Society, London, Special Publications
Published: 01 January 2013
EISBN: 9781862396463
... of organic matter, lake level fluctuations, productivity, salinity and pH. Suarez et al. (2013 a ) examine two sections from the Early Cretaceous lacustrine strata of the Xiagou Formation, Changma Basin in Gansu Province, China. Because detailed temporal relationships in this region are lacking...
Journal Article
Published: 04 August 2015
Bulletin of the Seismological Society of America (2015) 105 (5): 2724-2735.
... and Deng (1984) and Gaudemer et al. (1995) 1932 Changma 39.7 96.7 7.6 110/55/39 116 2.7 Molnar and Deng (1984) , Peltzer et al. (1988) , and Xu et al. (2010) 1954 Shandan 38.94 101.36 7.2 110/50/45 40 1.0 Molnar and Deng (1984) 1990 Tianzhu 37.1 103.5 6.2 95/90...
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Journal Article
Published: 07 January 2019
Geological Magazine (2019) 156 (10): 1645-1656.
... is wider than in Annemys levensis (Rabi et al. 2014 ). Despite deformation, the skull was originally low; comparable to that of A. levensis and Annemys sp. from the Junggar Basin, Xinjiang, China (Brinkman et al. 2013 b ), but different from the tall skull of Xinjiangchelys radiplicatoides...
FIGURES
Journal Article
Published: 01 January 2014
Journal of Paleontology (2014) 88 (1): 99-108.
... to be slightly younger than Yixian or Jiufotang Formation; You et al., 2005 ; Lamanna et al., 2006 ) in Changma Basin, northwest China. The coracoids are preserved in dorsal view. Although the scapular articulation in the proximal part of the left coracoid is partially covered by the scapular acromion...
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Journal Article
Published: 02 July 2019
Bulletin of the Seismological Society of America (2019) 109 (4): 1498-1523.
...) 32 North edge of Maoyaba basin 55 4.1 ± 0.9 LL Before A.D 1722, U [0.156, 0.392] # ; [0.156, 0.392] # ; (0, 0.392] # 1959, 4.7, 0.316; 1979, 5.0, 0.343; 1996, 5.6, 0.365 7.3 5.90 5.95 500–1000 Xu et al. (2005) 33 Litang 100 3.8 ± 0.8 LL 1890, 7½ ** [0.033, 0.126]; (0...
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Journal Article
Published: 05 August 2015
Canadian Journal of Earth Sciences (2015) 52 (8): v-xxxiii.
... (1984 and 1991)  • Partners: Museum of Victoria (now called Museum Victoria: Melbourne, Australia) and RTMP (member: Currie).  • Funding: Earthwatch.  • Publication: Currie et al. (1996) . Junggar Basin Project I (1994)  • Partners: Nanjing Institute of Geology and Paleontology...
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