Multi-stage volcanic activities and geodynamic evolution of the Lhasa terrane during the Cretaceous: Insights from the Xigaze forearc basin

Dai, Jingen; Wang, Chengshan; Zhu, Di‐Cheng; Li, Yalin; Zhang, Hanting; Ge, Yukui

doi:10.1016/j.lithos.2015.01.019

Cited by 38 publications

(21 citation statements)

References 60 publications

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“…(a) Stratigraphic and facies comparison among principal Cretaceous basins on the Lhasa terrane. Sources of stratigraphic data: Coqen basin [ Sun , ; Sun et al , ]; Southern Nima basin [ DeCelles, et al ., a ; Kapp et al ., ]; Selin Co basin [ Zhang et al ., ]; Xigaze forearc basin [ Dai et al ., ; Orme and Laskowski , ; Wang et al ., ]; Linzhou basin [ Leier et al ., ; Boudagher‐Fadel et al ., ]. (b) Paleogeographic sketch map of the Lhasa terrane at 110 Ma, showing westward retreat of seaways and diachronous uplift of the Lhasa terrane from east to west.…”

Section: Discussionmentioning

confidence: 99%

“…In the Xigaze forearc basin, deep‐sea turbidites were deposited directly above the red chert and siliceous shales representing the sedimentary cover of the Yarlung‐Zangbo ophiolites [ Girardeau et al , ; Einsele et al , ; Wang et al , ] (Figure a). The onset of clastic sedimentation in the forearc basin, constrained precisely at 113–110 Ma by zircon U–Pb dating of intercalated tuff layers [ Dai et al , ; Orme and Laskowski , ], was considered as a result of initial topographic growth on the Lhasa terrane [ Wang et al , ]. Sandstones from the base of the Xigaze forearc‐basin succession contain sediments derived from both Gangdese arc and North Lhasa subterrane, indicating that the Gangdese belt was emerged but still at a low elevation, and that the river system feeding the Xigaze forearc basin had its source in the North Lhasa subterrane [ Dai et al , ; Orme and Laskowski , ; Wang et al , ].…”

Section: Discussionmentioning

confidence: 99%

“…In the Xigaze forearc basin, deep-sea turbidites were deposited directly above the red chert and siliceous shales representing the sedimentary cover of the Yarlung-Zangbo ophiolites [Girardeau et al, 1984;Einsele et al, 1994;Wang et al, 2012] (Figure 11a). The onset of clastic sedimentation in the forearc basin, constrained precisely at 113-110 Ma by zircon U-Pb dating of intercalated tuff layers [Dai et al, 2015; Orme and Laskowski, Figure 11. (a) Stratigraphic and facies comparison among principal Cretaceous basins on the Lhasa terrane.…”

Section: Early Cretaceous Topographic Growth and Paleogeography Of Thmentioning

confidence: 99%

“…(a) Stratigraphic and facies comparison among principal Cretaceous basins on the Lhasa terrane. Sources of stratigraphic data: Coqen basin [Sun, 2015;Sun et al, 2015]; Southern Nima basin Kapp et al, 2007a]; Selin Co basin [Zhang et al, 2011]; Xigaze forearc basin [Dai et al, 2015;Orme and Laskowski, 2016;Wang et al, 2017]; Linzhou basin [Leier et al, 2007a;Boudagher-Fadel et al, 2017] Journal of Geophysical Research: Solid Earth 10.1002/2017JB014278 2016], was considered as a result of initial topographic growth on the Lhasa terrane . Sandstones from the base of the Xigaze forearc-basin succession contain sediments derived from both Gangdese arc and North Lhasa subterrane, indicating that the Gangdese belt was emerged but still at a low elevation, and that the river system feeding the Xigaze forearc basin had its source in the North Lhasa subterrane [Dai et al, 2015;Orme and Laskowski, 2016;Wang et al, 2017].…”

Section: Early Cretaceous Topographic Growth and Paleogeography Of Thmentioning

confidence: 99%

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Early cretaceous topographic growth of the Lhasaplano, Tibetan plateau: Constraints from the Damxung conglomerate

Wang

Garzanti

et al. 2017

JGR Solid Earth

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Constraining the timing of early topographic growth on the Tibetan plateau is critical for any models of India‐Asia collision, Himalayan orogeny and subsequent plateau development in the Cenozoic. Stratigraphic, sedimentological and provenance analysis of the Lower Cretaceous red‐beds of the Damxung Conglomerate provide new key information to reconstruct the paleogeography and the tectonic evolution of the Lhasa terrane at the time. The over 700‐m‐thick Damxung Conglomerate documents distal alluvial fan to braidplain sedimentation passing upward to proximal alluvial fan sedimentation. Deposition began near sea level, as documented by limestone beds occurring at the base of the unit. Zircon U–Pb dating of interbedded tuff layers constrain deposition age at ca. 111 Ma. Abundance of volcanic clasts, Cretaceous U–Pb ages and Hf isotopes of detrital zircons yielding mainly negative εHf(t) values together with paleocurrent data indicate an active volcanic source located in the North Lhasa subterrane. Pre‐Mesozoic‐aged zircon, recycled quartz and (meta) sedimentary rock fragments increase up‐section, indicating progressive erosional exhumation of the Paleozoic sedimentary/metasedimentary basement. The Damxung Conglomerate thus records a significant uplift and unroofing stage in the source region, implying initial topographic growth on the Lhasa terrane at early Albian time. Early Cretaceous topographic growth on the Lhasa terrane is supported by the stratigraphic record in the Linzhou basin, the Xigaze forearc basin and the southern Nima basin. In contrast, marine strata in the central‐western Lhasa terrane lasted until the early Cenomanian (ca. 96 Ma), indicating diachronous marine regression on the Lhasa terrane from east to west.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Early Cretaceous Topographic Growth and Paleogeography Of Thmentioning

confidence: 99%

Section: Early Cretaceous Topographic Growth and Paleogeography Of Thmentioning

confidence: 99%

See 2 more Smart Citations

Early cretaceous topographic growth of the Lhasaplano, Tibetan plateau: Constraints from the Damxung conglomerate

Wang

Garzanti

et al. 2017

JGR Solid Earth

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“…However, there are many debates about the geodynamic background of this magmatism. Some scholars believe that it is related to the northward subduction of the Neo-Tethyan Ocean (Coulon et al 1986;Pearce & Houjun, 1988;Matte, 1996;Zhang et al 2004;Kapp et al 2007;Dai et al 2015); some other scholars think that the occurrence of slab break-off events during the southward subduction of the Bangong-Nujiang Ocean (BNO) is a more reasonable scenario (Zhu et al 2009(Zhu et al , 2011(Zhu et al , 2013Qu et al 2012;Sui et al 2013;Chen et al 2014;Wu et al 2015b). To solve these disputes, more detailed research on magma petrogenesis is necessary.…”

Section: Introductionmentioning

confidence: 99%

Slab break-off origin of 105 Ma A-type porphyritic granites in the Asa area of Tibet

Wang

Zeng

et al. 2020

Geol. Mag.

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The study of the petrogenesis of some magmatic rocks with special geochemical attributes provides effective information for us to explore the deep geodynamic background of their formation. A series of granitic porphyry dykes have been found in the mélange zone of the Asa region in southern Tibet, whose genesis may be closely related to the evolution of the Meso-Tethyan Ocean. Regional geodynamic evolution is investigated by whole-rock geochemical analysis, zircon U–Pb dating and Lu–Hf isotopic analysis of two porphyritic granites. The Asa porphyritic granites have high SiO2 (74.29–78.65 wt %) and alkalis (Na2O + K2O = 6.51–9.35 wt %) contents, and low Al2O3 (11.60–14.51 wt %), CaO (0.04–0.19 wt MgO (0.01–0.10 wt %) contents. They are enriched in Zr, Nb, Ce, Y and Hf and depleted in Ti, Ba, Sr and P, consistent with A-type granites. The samples are relatively rich in LREEs, with LREE/HREE ratios of 1.73–3.04. They display negative Eu anomalies (Eu/Eu* = 0.24–0.28) and obvious Ce anomalies in some samples. Zircon U–Pb analyses show that the porphyritic granites formed in late Early Cretaceous time, 107.4 to 105.5 Ma. Zircon εHf(t) values are in the range of 6.9 to 12.0. These data indicate that the porphyritic granites were sourced from interaction between mantle-derived and juvenile lower crust-derived melts, with the addition of oceanic sediment-derived melts. This occurred when the subducting Bangong–Nujiang oceanic crust split to create a slab window. Rising asthenosphere triggered re-melting of lower crust basalts, resulting in the formation of the late Early Cretaceous A-type granites around Asa.

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Mesozoic-Cenozoic Sedimentary Geology in the Tibetan Himalaya: Continental Collision, Palaeoceanography and Hyperthermal Events

Hu,

Chen,

et al. 2024

Field Trip Guidebook on Chinese Sedimentary Geology

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Multi-stage volcanic activities and geodynamic evolution of the Lhasa terrane during the Cretaceous: Insights from the Xigaze forearc basin

Cited by 38 publications

References 60 publications

Early cretaceous topographic growth of the Lhasaplano, Tibetan plateau: Constraints from the Damxung conglomerate

Early cretaceous topographic growth of the Lhasaplano, Tibetan plateau: Constraints from the Damxung conglomerate

Slab break-off origin of 105 Ma A-type porphyritic granites in the Asa area of Tibet

Mesozoic-Cenozoic Sedimentary Geology in the Tibetan Himalaya: Continental Collision, Palaeoceanography and Hyperthermal Events

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