Sedimentary and evolutionary characteristics of Sinian in the Tarim Basin

Shi, Kaibo; Liu, Bo; Jiang, Weimin; Gao, Xiangyun; Liu, Shiqi; Shen, Yun

doi:10.1016/j.ptlrs.2017.04.004

Cited by 13 publications

(12 citation statements)

References 13 publications

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“…The sporadically interbedded medium-to thick-bedded conglomerates, characterized by poor sorting and well-rounded clasts (Figure 2e), may signify deltaic plain channel deposition. Consequently, the overall features of the Clastic Member display a notable resemblance to the lithological composition and depositional environments described by [12,28] for the Yukengou Formation in the central Kuruktag area. These features contrast significantly with the lithology of the Beisainaertage Formation, which consists of phyllite, foliated sandstone, and quartzite, as reported in [29].…”

Section: Geological Setting and Stratigraphic Characteristicmentioning

confidence: 55%

“…Nevertheless, due to restricted accessibility for comprehensive research in the central Kuruktag block, where the majority of previously reported Cryogenian-Ediacaran strata were exposed (Figure 1b), their depositional setting remains a contentious subject. Numerous scholars suggest that the strata were deposited in a continental rift-passive margin or continental rift-aulacogen basin [2,4,[9][10][11][12][13][14]. However, recent investigations, leveraging structural-sedimentary patterns and contemporaneous magmatism, propose that the Cryogenian-Ediacaran strata might have been deposited in a subduction environment on the supercontinent's periphery, signifying active rift sedimentation [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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First Identification of the Ediacaran Yukengou Formation in the Western Kuruktag Block, Northeastern Tarim, and Its Implications for Neoproterozoic Rift Basin Evolution

et al. 2023

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The Cryogenian–Ediacaran strata in the Kuruktag block, northeastern Tarim Craton, are pivotal for deciphering the breakup of Neoproterozoic Rodinia and related peripheral subduction processes. This study reveals previously unidentified Ediacaran strata in the western Kuruktag block, characterized by deltaic plain clastic rocks and channel deposits. Zircon geochronological analyses of basalts and sandstones indicate a maximum depositional age of ~596 Ma, thereby attributing these strata to the Ediacaran Yukengou Formation in conjunction with prior paleontological findings. The prevalence of lithic fragments and two primary detrital zircon age populations within the Yukengou Formation sandstones suggest a rift basin environment, in contrast to a passive continental margin, receiving detrital material from the neighboring Paleoproterozoic basement and Neoproterozoic magmatic activity. As a result, the Cryogenian–Ediacaran strata are posited to have been deposited in an aulacogen basin. The presence of numerous Neoproterozoic zircon grains further implies significant volcanic events preceding and concurrent with Cryogenian rifting, suggesting that continental rifting along the northeastern Tarim margin may have been instigated by subduction-induced extension.

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Section: Geological Setting and Stratigraphic Characteristicmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

First Identification of the Ediacaran Yukengou Formation in the Western Kuruktag Block, Northeastern Tarim, and Its Implications for Neoproterozoic Rift Basin Evolution

et al. 2023

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“…The time of rapid subsidence in the Tarim Basin corresponds to the highest paleoheat flow and the rapid rise of paleogeotemperature during the Cambrian (He et al, 2017). The significant increases in the thickness of the mudstones and siltstones in the lower Cambrian in the vicinity of Well XH1 in the northern part of the basin indicate that the water depth was increasing at this time (Shi et al, 2017;Wen et al, 2017;Figure 4). During this period, the widespread transgressions formed the continental deposits along the slope of the paleotopography.…”

Section: Relations Of Onlap and Yuertusi Source Rockmentioning

confidence: 98%

“…The differences in the sedimentary environments between the southern and northern parts of the Tarim Basin of the Upper Sinian gradually decrease with decreasing age. A carbonate-rich continental shelf facies is present in the northern Tarim Basin, whereas a dolomite tidal flat facies is present in the southern Tarim Basin (Feng et al, 2015;Shi et al, 2016;Wu et al, 2016;Zhang et al, 2019). Previous scholars have used the U-Pb zircon age to determine the ages of the Nanhua-Sinian strata in the wells of the Tarim Basin.…”

Section: Nanhua-cambrian Stratigraphymentioning

confidence: 99%

Distribution of Cambrian Source Rock Controlled by the Inherited Paleotopography on the Precambrian Basement in the Tarim Basin, NW China

et al. 2022

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The Cambrian source rock is a key indicator that will guide future hydrocarbon explorations in ultra-deep strata. Despite its importance, the characteristics of paleotopography on the Precambrian basement and the distribution of source rocks above it remain unclear. The seismic and borehole data, isopach data, and the unconformity analysis are used to study the relations of the Cambrian source rock distribution to the paleotopography. The consistency of the strata thickness distribution maps of the Nanhua–Cambrian sequences show that the extensive thermal subsidence lasted the whole Sinian period, and makes the paleotopography of the Precambrian basement inherited from the landform after the Nanhua continental rifting. A major transgression caused by rapid subsidence of the Tarim Basin took place during the Cambrian. Shales were deposited offshore along the slopes of a paleo-uplift on the inherited paleotopography and formed the onlap in seismic profiles. The onlap on the inherited paleotopography reflects the distribution range of Yuertusi source rocks in the Cambrian.

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“…The Stratigraphic features of Tazhong Uplift shows that a large number of marine sedimentation strata developed after multi-stage tectonic movements [15][16][17]; however the majority of existing strata belong to Paleozoic and the minority to Meso-Cenozoic. Unconformity interfaces presented among the different formations in the stratigraphic column and the Base Silurian is the most important one.…”

Section: Stratigraphic Featuresmentioning

confidence: 99%

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

Jin¹,

Cui²,

Zhi-xu³

2018

dteees

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Abstract. This paper presents the analysis on geological characteristics of Tazhong Uplift, such as the configuration and nature of the fault structures, and the aeromagnetic anomaly, etc. The study result shows that Tazhong Uplift presents several large-scale fault belts that mainly extend in three directions: NW, approximate (approx.) EW and NNE. The NW fault belts lie in the north and northwest of the research area; the approx. EW fault belts rest in the south and southeast of the research area, whereas the NNE fault belts are mainly strike-slip faults and cut the NW fault belts into several structural segments. It is concluded that the late Caledonian and the late Hercynian period were the two major forming periods of Tazhong Uplift. In the late Caledonian period, the NW thrust faults developed in Tazhong Uplift under the tectonic compression stress from the southwest Foreland Basin. In the late Hercynian period, the subduction of Altyn Orogenic Belt influenced the central Tarim and generated the approx. EW thrust faults in the central and southern Tazhong Uplift. This subduction also forced the early-formed fault belts into an arc-shape in the central Tazhong Uplift and caused NNE strike-slip faults in the northern Tazhong Uplift. Laterally the tectonic stress decreased from the south to the north. From regional perspective, the fault belts diverge to the west and converge to the east.

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Sedimentary and evolutionary characteristics of Sinian in the Tarim Basin

Cited by 13 publications

References 13 publications

First Identification of the Ediacaran Yukengou Formation in the Western Kuruktag Block, Northeastern Tarim, and Its Implications for Neoproterozoic Rift Basin Evolution

First Identification of the Ediacaran Yukengou Formation in the Western Kuruktag Block, Northeastern Tarim, and Its Implications for Neoproterozoic Rift Basin Evolution

Distribution of Cambrian Source Rock Controlled by the Inherited Paleotopography on the Precambrian Basement in the Tarim Basin, NW China

Tectonic Characteristic and Origin of Tazhong Uplift, Tarim Basin

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