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Shagou River

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Figure 3. Cross-valley profile of lower four terraces along Shagou River near Xiaopokou. Strath surfaces are visible beneath all except youngest (T1) terrace. T4 is displaced by oblique-slip fault and covered with ∼70 m of loess. Soil S4 at base of T4 terrace cover formed ca. 425 ka based on stratigraphic comparison with marine isotopic record (Karner et al., 2002) and paleosols in Loess Plateau (Liu, 1987). On terrace T3, soil S2, with thermoluminescence (TL) age of 225 ± 17 ka, correlates with isotope stage 7 (200–220 ka) interglaciation. On terrace T2, soil S1 is bracketed by TL ages of >78 ± 7 ka and <140 ± 10 ka, placing it in last interglaciation. On lowest terrace, 14C dates in fluvial sediment mantling underlying strath indicate that strath was formed before 13 ka. See Figure 1 for profile location
Published: 01 November 2003
Figure 3. Cross-valley profile of lower four terraces along Shagou River near Xiaopokou. Strath surfaces are visible beneath all except youngest (T 1 ) terrace. T 4 is displaced by oblique-slip fault and covered with ∼70 m of loess. Soil S 4 at base of T 4 terrace cover formed ca. 425 ka based
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Published: 01 November 2003
TABLE 1. CHARACTERISTICS OF SHAGOU RIVER TERRACES
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Figure 1. Distribution of terraces and conglomerate fans in lower reaches of Shagou River in eastern Qilian Shan, northeastern Tibet. Inset depicts regional setting of Shagou River. Line A-A′ defines longitudinal geomorphic profile (Fig. 2), and line B-B′ defines valley section (see Fig. 3)
Published: 01 November 2003
Figure 1. Distribution of terraces and conglomerate fans in lower reaches of Shagou River in eastern Qilian Shan, northeastern Tibet. Inset depicts regional setting of Shagou River. Line A-A′ defines longitudinal geomorphic profile ( Fig. 2 ), and line B-B′ defines valley section (see Fig. 3 )
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Figure 4. Reconstructed bedrock incision based on strath heights and ages, Shagou River. Long-term rate of bedrock incision is ∼0.14 mm/yr over past 870 k.y
Published: 01 November 2003
Figure 4. Reconstructed bedrock incision based on strath heights and ages, Shagou River. Long-term rate of bedrock incision is ∼0.14 mm/yr over past 870 k.y
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Figure 2. Schematic longitudinal section of terraces and loess cover along Shagou River. Strath terraces are incised into Miocene red clay or uplifted foreland conglomerates. Paleosol S4 is shown for reference. Highest terrace (T5) is cut by small-displacement faults. Magnetostratigraphy on T5 terrace (shown on right) of 200-m-thick loess sequence (with numbered paleosols correlative to those in Loess Plateau: Liu, 1987) records Brunhes-Matuyama boundary and indicates strath formed before 845 ka. See Figure 1 for profile location
Published: 01 November 2003
Figure 2. Schematic longitudinal section of terraces and loess cover along Shagou River. Strath terraces are incised into Miocene red clay or uplifted foreland conglomerates. Paleosol S 4 is shown for reference. Highest terrace (T 5 ) is cut by small-displacement faults. Magnetostratigraphy on T 5
Journal Article
Journal: Geology
Published: 01 November 2003
Geology (2003) 31 (11): 957–960.
...Figure 3. Cross-valley profile of lower four terraces along Shagou River near Xiaopokou. Strath surfaces are visible beneath all except youngest (T 1 ) terrace. T 4 is displaced by oblique-slip fault and covered with ∼70 m of loess. Soil S 4 at base of T 4 terrace cover formed ca. 425 ka based...
FIGURES
First thumbnail for: A 900 k.y. record of strath terrace formation duri...
Second thumbnail for: A 900 k.y. record of strath terrace formation duri...
Third thumbnail for: A 900 k.y. record of strath terrace formation duri...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 13 April 2017
Lithosphere (2017) 9 (4): 545–560.
... of the Tibetan Plateau : Tectonics , v. 28 , no. 4 , TC4017 , doi:10.1029/2009TC002455. Pan , B. , Wu , G. , Wang , Y. , Liu , Z. , and Guan , Q. , 2001 , Age and genesis of the Shagou River terraces in eastern Qilian Mountains : Chinese Science Bulletin , v. 46 , no. 6 , p...
FIGURES
First thumbnail for: Folded fluvial terraces in a young, actively defor...
Second thumbnail for: Folded fluvial terraces in a young, actively defor...
Third thumbnail for: Folded fluvial terraces in a young, actively defor...
Journal Article
Journal: Economic Geology
Published: 01 September 2024
Economic Geology (2024) 119 (6): 1433–1439.
... environment of the Longbohe Fe-Cu-(LREE) deposit in the Ailao Shan-Red River shear zone, southwest China: A Neoproterozoic subduction-related IOCG deposit? Lei Liu, Wei Terry Chen, and Xin-Fu Zhao 1 23 Polyphase W-Sn mineralization and rare metal magmatism in relation to the late-Variscan tectono-metamorphic...
Journal Article
Journal: GSA Bulletin
Published: 01 March 2005
GSA Bulletin (2005) 117 (3-4): 396–410.
... was deposited in a sandy braided river system. Accordingly, the succession from Members 1–2 is the consequence of progradation of fluvial sediments into a lacustrine setting, recording the growth of a delta system. Siltstone and mudstone facies associations in Member 1 might represent prodelta deposits...
FIGURES
First thumbnail for: Mesozoic sedimentary evolution of the northwest Si...
Second thumbnail for: Mesozoic sedimentary evolution of the northwest Si...
Third thumbnail for: Mesozoic sedimentary evolution of the northwest Si...
Journal Article
Journal: AAPG Bulletin
Published: 15 January 2019
AAPG Bulletin (2019) 103 (1): 189–213.
... the precipitation ( Jia, 2015 ). Influenced by multiple ice ages, the snowmelt of the Northern Tianshan Mountains easily forms surface runoff and enters the surface water system. Regionally, several rivers developed from west to east ( Figure 1 ), and their discharges change with the seasonal variation...
FIGURES
First thumbnail for: A study of hydrogeology and its effect on coalbed ...
Second thumbnail for: A study of hydrogeology and its effect on coalbed ...
Third thumbnail for: A study of hydrogeology and its effect on coalbed ...
Journal Article
Journal: Geophysics
Published: 08 August 2023
Geophysics (2023) 88 (5): WB115–WB132.
... Plateau (Figure  1 ), with the Nanshan Mountain to its north, the Ela Mountain and Yellow River Valley to its south, and the Guinan Shagou Guide area to its east ( Yan, 2015 ; Pang et al., 2020 ; Tang et al., 2020 ). The fault binds the basin with the southern margin of the Zongwulong Mountain...
FIGURES
First thumbnail for: Analysis of the geothermal formation mechanisms in...
Second thumbnail for: Analysis of the geothermal formation mechanisms in...
Third thumbnail for: Analysis of the geothermal formation mechanisms in...
Journal Article
Published: 19 December 2022
Geological Magazine (2023) 160 (3): 471–489.
... in the two wings of the Tianbaoshan syncline, including the Xinshan syncline, the Shagou anticline and syncline and the Nangouqing anticline in the Tianbao ore section (Fig.  1 c). Previous studies suggested that the Tianbaoshan area has undergone two episodes of regional compression in nearly NWW–SEE...
FIGURES
First thumbnail for: Mineral textures, mineral chemistry and S isotopes...
Second thumbnail for: Mineral textures, mineral chemistry and S isotopes...
Third thumbnail for: Mineral textures, mineral chemistry and S isotopes...
Journal Article
Journal: GSA Bulletin
Published: 01 November 2015
GSA Bulletin (2015) 127 (11-12): 1583–1603.
... the geometry of the Mishuling pluton aboveground: (1) The northern part of the pluton is relatively higher, and (2) there is no evident change of altitude along the E-W–striking DEM profiles except inflection caused by incision of rivers ( Figs. 11B–11D ). These features define a tear-shape of the Mishuling...
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First thumbnail for: New insights into the emplacement mechanism of the...
Second thumbnail for: New insights into the emplacement mechanism of the...
Third thumbnail for: New insights into the emplacement mechanism of the...
Journal Article
Published: 20 July 2022
Geological Magazine (2022) 159 (10): 1787–1808.
... % NaCl). Finally, Wen et al. ( 2016 ) also provided a simplistic set of physicochemical conditions of formation for Sedex deposits proposing that they formed under reducing conditions, which is characteristic of Selwyn-type Pb–Zn Sedex deposits. Cooke et al. ( 2000 ) recognized the McArthur River...
FIGURES
First thumbnail for: Zinc, sulfur and cadmium isotopes and Zn/Cd ratios...
Second thumbnail for: Zinc, sulfur and cadmium isotopes and Zn/Cd ratios...
Third thumbnail for: Zinc, sulfur and cadmium isotopes and Zn/Cd ratios...
Journal Article
Journal: GSA Bulletin
Published: 16 March 2021
GSA Bulletin (2021) 133 (11-12): 2457–2484.
... by the Huangshui River and its tributaries exposed the Cretaceous to Neogene sequences with numerous index fossils, which have been investigated by many authors (e.g., Horton et al., 2004 ; Dai et al., 2006 ; Dupont-Nivet et al., 2007 ; Abels et al., 2011 ; Hoorn et al., 2012 ; Xiao et al., 2010 , 2012...
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First thumbnail for: Magnetostratigraphic study of a Late Cretaceous–Pa...
Second thumbnail for: Magnetostratigraphic study of a Late Cretaceous–Pa...
Third thumbnail for: Magnetostratigraphic study of a Late Cretaceous–Pa...
Journal Article
Journal: SEG Discovery
Published: 01 January 2014
SEG Discovery (2014) (96): 1–64.
... on behalf of the people of the HYC strat- (SEG 1982 F-Lindgren) of South Australia. Before joining the Public Service in iform lead-zinc deposit at McArthur 2002, Paul spent more than 20 years in River, N.T., Australia. This work led to the mining industry in Australia and a growing interest in the use...
Journal Article
Journal: SEG Discovery
Published: 01 January 2005
SEG Discovery (2005) (60): 1–64.
.... Canwell prospect drill program on its Forty-seven line km of grid were sur- MAN Cu-Ni-Au-PGE project in the Delta veyed and several anomalies were Teryl Resources Corp. also River district. The drilling efforts were delineated. It is expected that the announced results from limited soil focused on testing...