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Luogangcuo Formation

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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 23 March 2018
Lithosphere (2018) 10 (3): 446–459.
... detailed stratigraphic, sedimentologic, petrographic, detrital-zircon geochronologic and Hf isotopic data from the Luogangcuo Formation exposed as part of the Xiukang Mélange in south Tibet. The Luogangcuo Formation was deposited (ca. 88–81 Ma) in a trench environment on a deep-sea fan fed from the Lhasa...
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Measured stratigraphic sections of the <b>Luogangcuo</b> <b>Formation</b>. Lithofacies ar...
Published: 23 March 2018
Figure 2. Measured stratigraphic sections of the Luogangcuo Formation. Lithofacies are described in Table 1 . Gravel composition and position of samples used for detrital-zircon geochronology are shown.
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Field photographs of the <b>Luogangcuo</b> <b>Formation</b>. (A) Panorama of Section A. (...
Published: 23 March 2018
Figure 3. Field photographs of the Luogangcuo Formation. (A) Panorama of Section A. (B) Fault contact between the Xiukang Mélange (left) and the Luogangcuo Formation (right); detail shown in the inset photo. (C) Sandstone lens (Sm) intercalated with matrix-supported conglomerates (Gmm). (D
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LITHOFACIES FOUND IN THE <b>LUOGANGCUO</b> <b>FORMATION</b>, SOUTH TIBET, AND INTERPRETAT...
Published: 23 March 2018
TABLE 1. LITHOFACIES FOUND IN THE LUOGANGCUO FORMATION, SOUTH TIBET, AND INTERPRETATIONS OF THEIR DEPOSITIONAL PROCEDURE
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Petrofacies of the <b>Luogangcuo</b> <b>Formation</b>: (A) Radiolarian chert. (B) Impure ...
Published: 23 March 2018
Figure 4. Petrofacies of the Luogangcuo Formation: (A) Radiolarian chert. (B) Impure bioclastic-limestone clasts in conglomerates (samples 12QD02 and 12LGC12). (C–F) Quartzo-feldspatho-lithic volcaniclastic sandstones (12LGC05, 12QD04, 12QD17, and 12QD20). (G–H) Slumped blocks of feldspatho
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Paleogeographic reconstruction (not to scale), showing the Neo-Tethyan ocea...
Published: 23 March 2018
Figure 7. Paleogeographic reconstruction (not to scale), showing the Neo-Tethyan oceanic trench where the Luogangcuo Formation was deposited.
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SUMMARIZED CHARACTERISTICS OF DETRITAL ZIRCON U-Pb AGES OF SANDSTONE SAMPLE...
Published: 23 March 2018
TABLE 2. SUMMARIZED CHARACTERISTICS OF DETRITAL ZIRCON U-Pb AGES OF SANDSTONE SAMPLES IN THE LUOGANGCUO FORMATION, SOUTH TIBET
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Ternary diagrams showing the petrographic composition of turbiditic sandsto...
Published: 23 March 2018
Figure 5. Ternary diagrams showing the petrographic composition of turbiditic sandstones and sandstone blocks in the Luogangcuo Formation. (A) QFL diagram, petrographic classification after Garzanti (2016) . (B) LmLvLs diagram. Q—quartz; F—feldspar; L—lithic fragments (Lm—metamorphic; Lv
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Age patterns (A–C) and Hf isotope signatures (F–H) of detrital zircons in s...
Published: 23 March 2018
Figure 6. Age patterns (A–C) and Hf isotope signatures (F–H) of detrital zircons in sandstones and slump blocks of the Luogangcuo Formation. Shown for comparison are data from the Xigaze forearc basin (D, I; Wu et al., 2010 ; Aitchison et al., 2011 ; An et al., 2014 ; Orme et al., 2015
Series: Geological Society, London, Special Publications
Published: 08 October 2019
DOI: 10.1144/SP483.12
EISBN: 9781786204523
... four distinct units within the subduction complex: the bainang terrane, the Xiazha Formation, the siliciclastic-matrix mélange and the trench fill (Rongmawa Formation and Luogangcuo Formation). The Tethyan Himalayan strata are in places deformed to block-in-matrix mélange, but the lithologies...
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Journal Article
Journal: Geology
Published: 06 September 2019
Geology (2019) 47 (11): 1029–1033.
... region trench basin samples ( Figs. 1 – 3 ), and other trench basin DZ data ( Cai et al., 2012 ; Wang et al., 2018 ), all from the Rongmawa Formation, suggest common provenance. A different trench basin unit (Luogangcuo Formation) exposed near Saga ( Fig. 1 ) was also deposited during Late Cretaceous...
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