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Kushma Formation

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Figure 5. (A) <span class="search-highlight">Kushma</span> <span class="search-highlight">Formation</span>; bedding outlined by dashed white line, cros...
Published: 01 July 2006
Figure 5. (A) Kushma Formation; bedding outlined by dashed white line, cross-bedding outlined by solid white lines; large bed is ∼1 m thick (N29°45′33.0″, E81°17′28.2″). (B) Ranimata Formation (pCr), showing a dioritic intrusion and phyllite with quartz augen; 30 cm hammer for scale (same location
Image
Figure 7. (A) Ramgarh thrust, placing <span class="search-highlight">Kushma</span> <span class="search-highlight">Formation</span> quartzite (pCk) over...
Published: 01 July 2006
Figure 7. (A) Ramgarh thrust, placing Kushma Formation quartzite (pCk) over the Ranimata Formation phyllite (pCr) along the Seti River south of Dhuli; 30 cm hammer for scale (location same as Fig. 5A ). (B) Ramgarh thrust, placing Kushma Formation (pCk) over the Lakharpata Group (pCl) along
Image
Figure 10. The Chainpur culmination. (A) Ulleri augen gneiss (pCul), separa...
Published: 01 July 2006
Figure 10. The Chainpur culmination. (A) Ulleri augen gneiss (pCul), separated by the dashed white line from the Ranimata Formation (pCr) (photo taken at N29°38.542′, E81°02.011′, looking east; point W, Fig. 9D ). (B) Kushma Formation quartzite, southwest of Chainpur, at point X ( Fig. 9A , N29
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( continued on next page ). 2D Move kinematic sequence of the Api reconstru...
Published: 01 October 2008
Figure 3. ( continued on next page ). 2D Move kinematic sequence of the Api reconstruction. Tops of each unit are delineated by the following: basement—hot pink; Kushma Formation—peach; Ranimata Formation—green, Sangram Formation—purple; Galyang Formation—brown; Syangia Formation—light pink
Journal Article
Journal: GSA Bulletin
Published: 01 July 2006
GSA Bulletin (2006) 118 (7-8): 865–885.
...Figure 5. (A) Kushma Formation; bedding outlined by dashed white line, cross-bedding outlined by solid white lines; large bed is ∼1 m thick (N29°45′33.0″, E81°17′28.2″). (B) Ranimata Formation (pCr), showing a dioritic intrusion and phyllite with quartz augen; 30 cm hammer for scale (same location...
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Image
Figure 5. Comparison of detrital zircon age signatures for the Annapurna sa...
Published: 01 July 2005
. Kuncha Formation detrital zircons are from the Kushma Quartzite in far western Nepal, which is correlated with the base of the Kuncha Formation ( DeCelles et al., 2001 ). Most of the zircon age data were obtained with an inductively coupled plasma mass spectrometer with an attached laser using methods
Journal Article
Journal: Geosphere
Published: 01 October 2008
Geosphere (2008) 4 (5): 785–801.
...Figure 3. ( continued on next page ). 2D Move kinematic sequence of the Api reconstruction. Tops of each unit are delineated by the following: basement—hot pink; Kushma Formation—peach; Ranimata Formation—green, Sangram Formation—purple; Galyang Formation—brown; Syangia Formation—light pink...
FIGURES | View All (10)
Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.268.01.12
EISBN: 9781862395169
... Nepal, Greater Himalayan rocks carried by the Main Central Thrust always rest upon lower-most Lesser Himalayan rocks of Early Proterozoic age ( Fig. 4 c; Pearson & DeCelles 2005 ), which include the Kushma and Ranimata formations and Ulleri Augen Gneiss, or their lateral equivalents (dark grey unit...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2010
GSA Bulletin (2010) 122 (3-4): 323–335.
... notably into the Kushma and Ranimata Formations in the west, the Kuncha Formation in central Nepal, and the Tumlingtar Group in the east. The Kushma Formation is a nearly pure quartzite, stratigraphically below the Ranimata Formation, and not obviously associated with igneous rocks. The Kuncha...
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Series: GSA Special Papers
Published: 22 May 2020
DOI: 10.1130/2020.2547(01)
EISBN: 9780813795478
.... (A) Outcrop of Kushma Formation quartzite, holding up ~100-m-high ridge along the Karnali River; view northeast. (B) Mafic sill intruded into quartzite unit within the Ranimata Formation. (C) Ranimata Formation chloritic phyllite with quartz boudins and veins. Hammer is 33 cm long. (D) Stromatolites...
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Journal Article
Published: 01 February 2017
Italian Journal of Geosciences (2017) 136 (1): 15–27.
... ( J angpangi , 1974 ; M cquarrie et alii , 2008) can be correlated lithologically with the Ranimata Formation of the Nepal Himalaya ( D ecelles et alii , 1998 , 2001 ), whereas the Reyang Formation can be correlated with the Kushma Formation of the Nepal Himalaya ( D eCelles et alii , 1998 ; D...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2005
GSA Bulletin (2005) 117 (7-8): 926–944.
.... Kuncha Formation detrital zircons are from the Kushma Quartzite in far western Nepal, which is correlated with the base of the Kuncha Formation ( DeCelles et al., 2001 ). Most of the zircon age data were obtained with an inductively coupled plasma mass spectrometer with an attached laser using methods...
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Journal Article
Published: 01 January 2009
Journal of the Geological Society (2009) 166 (1): 25–43.
... weathering quartzite unit that is equivalent to the Kushma Formation mapped in western Nepal ( DeCelles et al . 2001 ; Robinson et al . 2006 ). This basal meta-sandstone is structurally overlain by muscovite, biotite, quartz, chlorite phyllitic schist (Fig. 6 d) that is intercalated with lesser amounts...
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Journal Article
Published: 01 March 2017
Seismological Research Letters (2017) 88 (3): 867–874.
... September 2010 (3 hrs) AWStats Canterbury QuakeLive Self‐funded independent science website set up by a local individual to provide earthquake data obtained from GeoNet in an alternative format September 2010 16 September 2010 (12 days) Google analytics UC Geology Department Small suite...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2011
GSA Bulletin (2011) 123 (7-8): 1406–1426.
..., 1997 ). The Kuncha Formation in central Nepal and the Kushma and Ranimata Formations in western Nepal are bracketed between 1.83 Ga, the crystallization age of the Ulleri orthogneiss, which intrudes the lower part of the section ( DeCelles et al., 2000 ), and 1.86 Ga, based on detrital zircon peak ages...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 09 October 2024
Lithosphere (2024) 2024 (4): lithosphere_2023_299.
..., and graphitic schist Kushma Formation, 1890–1840 Barnalu Quartzite Medium to coarse grained micaceous quartzite with partings of lustrous phyllite Kuncha/Ranimata Formations 1912–1840? Lower OF Gritty/silty slate and phyllite plus metasandstone/ metagraywackeGranitic intrusions Figure 4...
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Journal Article
Published: 01 March 2008
Journal of the Geological Society (2008) 165 (2): 523–534.
.... The Dadeldhura thrust sheet consists of garnet–muscovite–biotite schists, mylonitic augen gneiss and Cambrian–Ordovician granites. The Ramgarh thrust sheet consists of greenschist-facies metasedimentary rocks of the Kushma and Ranimata Formations. Both the Dadeldhura and Ramgarh thrust sheets occur...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2009
GSA Bulletin (2009) 121 (9-10): 1262–1280.
... of the Paleoproterozoic Kushma and Ranimata Formations deposited at 1860–1830 Ma ( DeCelles et al., 2000 ). The above comparison suggests that the Ramgarh Thrust cuts upsection westward along strike from Nepal to Kumaun. Because the geometric relationship in Kumaun suggests the Ramgarh Thrust postdates tilting...
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Journal Article
Published: 14 June 2023
Journal of the Geological Society (2023) 180 (4): jgs2022-056.
... of Goscombe et al. (2006 , 2018 ) for the local geology ( Fig. 1a and b ). Schist and calc-silicate rocks of the Seti Formation form the lowermost unit of the Lesser Himalayan sequence in the area and are bounded on the top by the Main Central thrust zone. The Ulleri orthogneiss and schist of Kushma...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 October 2012
Lithosphere (2012) 4 (5): 449–464.
... into the Paleoproterozoic Lesser Himalaya rock, containing Kushma and Ranimata Formations and the ca. 1.73–1.86 Ga Proterozoic augen gneiss (dark gray, Fig. 1B ), and the Mesoproterozoic Lesser Himalaya rock, containing the Sangram, Galyang, and Syangia Formations and the Lakharpata Group (light gray, Fig. 1B ; Upreti...
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