The cretaceous dynamics of the pacific plate and stages of magmatic activity in Northeastern Asia

Stepashko, A. A.

doi:10.1134/s001685210603006x

Cited by 34 publications

(12 citation statements)

References 28 publications

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“…During the late Maastrichtian, the Songliao Basin entered the structural inversion stage (Song, 1997;Yu et al, 2001;Fang et al, 2003;Stepashko, 2006;Ge et al, 2010) which uplifted and folded the entire Lishu Depression section (Fig.3). As a consequence, deposition did not occur in the Lishu Depression during the Paleogene and Neogene.…”

Section: Structural Inversion Stagementioning

confidence: 94%

“…During the Late Jurassic, extensional tectonism thinned the crust of northeastern China along a series of north-northeast-striking normal faults that developed in the Songliao Basin (Watson et al, 1987;Yu et al, 2001;Ren et al, 2002;Johnson, 2004;Stepashko, 2006;Ge et al, 2010). Large-scale faults in the study area include the Sangshutai, Jin-gang and Qindong Faults.…”

Section: Initial-rifting Phasementioning

confidence: 95%

“…During the Early Cretaceous, regional about E-W extensional stress influenced the Songliao Basin (Li et al, 1987;Stepashko, 2006;Feng et al, 2010). Continued displacement along the Sangshutai Fault caused widening of the Sangshutai half-graben.…”

Section: Intensive-rifting Phasementioning

confidence: 97%

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The subsurface structure and stratigraphic architecture of rift-related units in the Lishu Depression of the Songliao Basin, China

Wang

Tang

2015

Journal of Asian Earth Sciences

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Section: Structural Inversion Stagementioning

confidence: 94%

Section: Initial-rifting Phasementioning

confidence: 95%

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The subsurface structure and stratigraphic architecture of rift-related units in the Lishu Depression of the Songliao Basin, China

Wang

Tang

2015

Journal of Asian Earth Sciences

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“…3a) were originally described by Storey et al (1987) and structures were briefly summarized by Vaughan et al (2012a). Structurally the Beaumont Glacier area (Fig.…”

Section: Geology Of the Beaumont Glacier Areamentioning

confidence: 99%

“…Kerr et al 2000;Ernst et al 2005) and the evidence for, and timing of, deformation in this interval around the margins of the palaeo-Pacific basin has been described in detail (Vaughan & Livermore 2005). Coeval plutonism on oceanic margins is significant in volume (Hart et al 2004;Vaughan & Livermore 2005;Stepashko 2006) and inferred magma flow-rates were high (Gehrels et al 2009). Along the palaeo-Pacific margin of Gondwana, compressional deformation was most fully developed in the Antarctic Peninsula and Patagonia (Vaughan & Livermore 2005;Tunik et al 2010), but is also evident in New Zealand (Waight et al 1998).…”

mentioning

confidence: 93%

Synkinematic emplacement of Lassiter Coast Intrusive Suite plutons during the Palmer Land Event: evidence for mid-Cretaceous sinistral transpression at the Beaumont Glacier in eastern Palmer Land

Vaughan

Storey

Kelley

et al. 2012

JGS

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New structural and geochronological data from the Eastern Palmer Land Shear Zone, in the vicinity of Beaumont Glacier, provide the first evidence of dated structural control on emplacement of the 119-95 Ma, >13000 km 2 Cretaceous Lassiter Coast Intrusive Suite, during the accretionary mid-Cretaceous Palmer Land Event orogeny. A previously undated >100 m thick dyke-like quartz tonalite intrusion was emplaced at 116.5 ± 1.5 Ma (Ar-Ar biotite cooling age) along a NW-SE axis, coeval with NW-SE compressional deformation, and possibly controlled by sinistral transpression along the Beaumont Glacier shear zone. The quartz tonalite preserves two styles of deformation and was probably progressively deformed by normal-sinistral shearing during magmatic cooling with initial deformation of mafic enclaves in the dyke interior and final formation of proto-mylonite to mylonite on the dyke margin. The quartz tonalite cuts folding associated with Phase 1 of the Palmer Land Event, indicating that this folding is older than 116 Ma, extending the onset of Phase 1 back in time. Mylonite on the quartz tonalite sheet margin was subsequently thermally reset at c. 107 Ma (Ar-Ar biotite method), during a peak in Lassiter Coast Intrusive Suite magmatism.

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Post‐rift Tectonic History of the Songliao Basin, NE China: Cooling Events and Post‐rift Unconformities Driven by Orogenic Pulses From Plate Boundaries

et al. 2018

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The classic lithosphere‐stretching model predicts that the post‐rift evolution of extensional basin should be exclusively controlled by decaying thermal subsidence. However, the stratigraphy of the Songliao Basin in northeastern China shows that the post‐rift evolution was punctuated by multiple episodes of uplift and exhumation events, commonly attributed to the response to regional tectonic events, including the far‐field compression from plate margins. Three prominent tectonostratigraphic post‐rift unconformities are recognized in the Late Cretaceous strata of the basin: T11, T03, and T02. The subsequent Cenozoic history is less constrained due to the incomplete record of younger deposits. In this paper, we utilize detrital apatite fission track (AFT) thermochronology to unravel the enigmatic timing and origin of post‐rift unconformities. Relating the AFT results to the unconformities and other geological data, we conclude that in the post‐rift stage, the basin experienced a multiepisodic tectonic evolution with four distinct cooling and exhumation events. The thermal history and age pattern document the timing of the unconformities in the Cretaceous succession: the T11 unconformity at ~88–86 Ma, the T03 unconformity at ~79–75 Ma, and the T02 unconformity at ~65–50 Ma. A previously unrecognized Oligocene unconformity is also defined by a ~32–24 Ma cooling event. Tectonically, all the cooling episodes were regional, controlled by plate boundary stresses. We propose that Pacific dynamics influenced the wider part of eastern Asia during the Late Cretaceous until Cenozoic, whereas the far‐field effects of the Neo‐Tethys subduction and collision processes became another tectonic driver in the later Cenozoic.

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The cretaceous dynamics of the pacific plate and stages of magmatic activity in Northeastern Asia

Cited by 34 publications

References 28 publications

The subsurface structure and stratigraphic architecture of rift-related units in the Lishu Depression of the Songliao Basin, China

The subsurface structure and stratigraphic architecture of rift-related units in the Lishu Depression of the Songliao Basin, China

Synkinematic emplacement of Lassiter Coast Intrusive Suite plutons during the Palmer Land Event: evidence for mid-Cretaceous sinistral transpression at the Beaumont Glacier in eastern Palmer Land

Post‐rift Tectonic History of the Songliao Basin, NE China: Cooling Events and Post‐rift Unconformities Driven by Orogenic Pulses From Plate Boundaries

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