Apparent polar wander path for East Asia and implications for paleomagnetic low inclination in sedimentary rocks

Jeong, Doohee; Yu, Yongjae

doi:10.1016/j.pepi.2019.02.005

Cited by 6 publications

(7 citation statements)

References 75 publications

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“…7a). The quiescence in polar motion during this time interval appears to be consistent with the ~ 130-70 Ma stagnation of pole positions for East Asia as well as Europe (Torsvik et al 2012;Cogné et al 2013), referred to as the Cretaceous standstill (Besse and Courtillot 1991;Jeong and Yu 2019). Otofuji and Matsuda (1987) reported that the period of standstill for southwest Japan was rather long and estimated to be between 100 and 20 Ma.…”

Section: Features Of the Apwp For Southwest Japansupporting

confidence: 66%

“…The proposed APWP does not include Paleogene data by Otofuji and Matsuda (1987), since they were not averaged over a wide area of southwest Japan. Nevertheless, this APWP is important for identifying the paleomagnetism trends of the Asian continent, while trying to build an APWP database for every 10 million years (e.g., Cogné et al 2013;Van der Voo et al 2015;Huang et al 2018a;Ren et al 2018;Jeong and Yu 2019).…”

Section: Construction Of An Apwp For Southwest Japanmentioning

confidence: 99%

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An improved apparent polar wander path for southwest Japan: post-Cretaceous multiphase rotations with respect to the Asian continent

Uno

Yuta

Morita

et al. 2021

Earth Planets Space

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To construct the Mesozoic apparent polar wander path (APWP) for the inner arc of the southwestern Japanese islands (referred to as southwest Japan) and compare it to that of East Asia, a 110 Ma paleomagnetic pole for southwest Japan was determined. Mudstone and sandstone samples were collected from 16 sites for paleomagnetic analysis in the Lower Cretaceous Inakura Formation of the Inakura area in the central part of southwest Japan. A high-temperature magnetization component, with unblocking temperatures of 670–695 °C, was isolated from 12 sites of red mudstone. Of these, 11 sites revealed a primary remanent magnetization during the Early Cretaceous. The primary directions combined with the previously reported ones provide a new mean direction (D = 79.7°, I = 47.4°, α95 = 6.5°, N = 17), and a corresponding paleomagnetic pole that is representative of southwest Japan (24.6° N, 203.1° E, A95 = 6.8°). The Early Cretaceous paleomagnetic pole, together with the Late Cretaceous and Cenozoic poles, constitute a new APWP for southwest Japan. The new APWP illustrates a standstill polar position during 110–70 Ma, suggesting tectonic quiescence of this region. This standstill was followed by two large tracks during the Cenozoic. We interpret these tracks as clockwise tectonic rotations of southwest Japan that occurred twice during the Cenozoic. The earlier tectonic rotation occurred for a tectonic unit positioned below northeast China, the Liaodong and Korean Peninsulas, and southwest Japan (East Tan-Lu Block) during the Paleogene. The later rotation took place only under southwest Japan during the Neogene. Cenozoic multiphase rifting activity in the eastern margin of the Asian continent was responsible for the tectonic rotations that are observed from the paleomagnetic studies. Intermittent rifting may constitute a series of phenomena due to asthenospheric convection, induced by the growth of the Eurasian mega-continent in the Mesozoic.

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Section: Features Of the Apwp For Southwest Japansupporting

confidence: 66%

Section: Construction Of An Apwp For Southwest Japanmentioning

confidence: 99%

An improved apparent polar wander path for southwest Japan: post-Cretaceous multiphase rotations with respect to the Asian continent

Uno

Yuta

Morita

et al. 2021

Earth Planets Space

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“…Inclination shallowing is a common phenomenon in clastic sedimentary rocks, especially for red sandstone (e.g., King, 1955;Kodama, 2012;Tan & Kodama, 2002;Tauxe, 2005;Tauxe & Kent, 2004). It has been wildly reported from Mesozoic-Cenozoic sedimentary rocks in Asia (Gilder et al, 2001;Jeong & Yu, 2019;Yan et al, 2005). Therefore, inclination shallowing should be tested for and corrected before applying paleomagnetic data to tectonic reconstructions.…”

Section: Inclination Shallowing and Virtual Paleomagnetic Polementioning

confidence: 99%

“…This oversight can be problematic for interpretations of regional tectonics and paleogeographic reconstructions. For example, the paleolatitudes of the NCC calculated from uncorrected Triassic data are lower than those of the South China Block, which contradict geological evidence showing that the NCC was located to the north of the South China Block (Jeong & Yu, 2019;Zhou et al, 2017). To overcome this problem, recent paleogeography reconstructions were made by applying an ascribed value of the flattening factor (f = 0.6) to correct poles from the Paleozoic to the present day (Torsvik et al, 2012;Van der Voo et al, 2015;Wu, Kravchinsky, Gu, & Potter, 2017).…”

Section: Introductionmentioning

confidence: 98%

An Inclination Shallowing‐Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto‐Asia

Zhao

Appel

2020

JGR Solid Earth

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The Early Mesozoic is a key period for the formation of the Asia continent. In this study, in order to reconstruct the Early Mesozoic paleogeography of Proto-Asia, we carried out a paleomagnetic study on the Early Triassic strata from the Chengde Basin in the northeastern North China Craton (NCC). Rock magnetic investigations reveal magnetite and hematite as the main magnetic carriers. Characteristic remanent magnetization directions from 21 sites show normal and reversed polarities and site-mean directions pass fold tests. After inclination shallowing (IS) correction with the elongation/inclination method, a mean direction is calculated at D s /I s = 322.5°/39.5°(k s = 32.6, α 95s = 5.7°) in stratigraphic coordinates. The corresponding Early Triassic paleomagnetic pole (λ/φ = 53.5°N/9.5°E, A 95 = 5.3°) overlaps with coeval poles that have also been corrected for IS reported from the western part of the NCC. This result indicates that there is no relative movement between the eastern and western parts of the NCC. With all IS-corrected paleomagnetic poles, a mean Early Triassic pole is recalculated for the NCC at λ/φ = 59.4°N/ 13.4°E (A 95 = 4.7°). We use this pole to reconstruct the paleogeography of Proto-Asia and confirm previous studies that did not use IS corrections, in which two "triangle bay-shaped" oceans, the Paleo-Tethys Ocean and the Mongol-Okhotsk Ocean, existed along the southern and northern margins of the unified NCC-Mongolian Block (MOB). Clockwise rotations of the South China Craton and Siberia Craton relative to the NCC-MOB during the Early Mesozoic led to the final closure of both oceans.

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“…To better understand the deformation of the Red River Fault Region in response to the India‐Asia collision, we compiled Cretaceous paleomagnetic results from recent compilations (Cung & Geissman, 2013; Jeong & Yu, 2019; Li et al., 2017), which presumably stem from primary magnetizations (Tables S5 and S6 in Supporting Information S1). Rotations and paleolatitude differences were calculated with respect to the synthetic apparent polar wander path (APWP) for Europe, which here we consider as Eurasia (Torsvik et al., 2012).…”

Section: Discussionmentioning

confidence: 99%

Remagnetization Age and Mechanism of Cretaceous Sediments in Relation to Dyke Intrusion, Hainan Island: Tectonic Implications for South China and the Red River Fault

Meng

Gilder

et al. 2022

JGR Solid Earth

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Hainan Island lies near the Red River Fault, a prominent tectonic feature produced by the India‐Asia collision. There, we carried out a geochronologic and paleomagnetic study on Cretaceous rocks in order to better understand the kinematic history of the region. U‐Pb zircon dating of tuff intercalated in red bed sedimentary rocks yielded a concordant age of 106.6 ± 0.3 Ma; a mafic dyke intruding the red beds yielded a concordant age of 104.6 ± 0.7 Ma. Stepwise demagnetization experiments on 448 sedimentary rock samples and 191 dyke samples isolate solely normal polarities. Paleomagnetic directions of the dykes cluster in two distinct populations in geographic coordinates, indicating that dyke intrusion occurred in two pulses of limited duration (secular variation was not averaged) after tilting of the sediments. Baking of the sediments from the dykes only occurred near the contacts. Together with published data, the mean directions of 104 sites most tightly group at 58.3 ± 3.2% unfolding, indicative of a synfolding remagnetization, which can be constrained to have occurred within a 2 Myr period between sedimentation and dyke intrusion. We suggest that warm (50–100°C) fluid interaction during basin development led to new mineral growth spawning chemical remagnetization. The corresponding paleomagnetic pole at 81.5°N, 145.2°E (A95 = 2.4°) is indistinguishable from the coeval Eurasian reference pole, suggesting the South China Block has remained fixed to Eurasia since 105 Ma. A contour map of paleomagnetic rotations from 115 studies in the region shows that the Red River Fault roughly demarcates rotation magnitudes/signs, suggestive of a major tectonic boundary.

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Apparent polar wander path for East Asia and implications for paleomagnetic low inclination in sedimentary rocks

Cited by 6 publications

References 75 publications

An improved apparent polar wander path for southwest Japan: post-Cretaceous multiphase rotations with respect to the Asian continent

An improved apparent polar wander path for southwest Japan: post-Cretaceous multiphase rotations with respect to the Asian continent

An Inclination Shallowing‐Corrected Early Triassic Paleomagnetic Pole for the North China Craton: Implication for the Mesozoic Geography of Proto‐Asia

Remagnetization Age and Mechanism of Cretaceous Sediments in Relation to Dyke Intrusion, Hainan Island: Tectonic Implications for South China and the Red River Fault

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