Paleomagnetic constraints on the Mesozoic-Cenozoic paleolatitudinal and rotational history of Indochina and South China: Review and updated kinematic reconstruction

Li, Shihu; Advokaat, Eldert L.; Hinsbergen, Douwe J.J. van; Koymans, Mathijs; Deng, Chenglong; Zhu, Rixiang

doi:10.1016/j.earscirev.2017.05.007

Cited by 129 publications

(155 citation statements)

References 174 publications

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“…All paleomagnetic directions were converted to normal polarity. The database was built following selection criteria listed in Li et al (2017). Because the paleomagnetic community does not normally publish their original data but only the statistical parameters (Dec, Inc, N , k) of the dataset, we have created parametrically sampled datasets for each site to facilitate averaging directions rather than means (see Deenen et al, 2011).…”

Section: Compilation Of Previous Paleomagnetic Resultsmentioning

confidence: 99%

Paleomagnetic constraints on the timing and distribution of Cenozoic rotations in Central and Eastern Anatolia

et al. 2018

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Abstract. To quantitatively reconstruct the kinematic evolution of Central and Eastern Anatolia within the framework of Neotethyan subduction accommodating Africa-Eurasia convergence, we paleomagnetically assess the timing and amount of vertical axis rotations across the Ulukışla and Sivas regions. We show paleomagnetic results from ∼ 30 localities identifying a coherent rotation of a SE Anatolian rotating block comprised of the southern Kırşehir Block, the Ulukışla Basin, the Central and Eastern Taurides, and the southern part of the Sivas Basin. Using our new and published results, we compute an apparent polar wander path (APWP) for this block since the Late Cretaceous, showing that it experienced a ∼ 30-35 • counterclockwise vertical axis rotation since the Oligocene time relative to Eurasia. Sediments in the northern Sivas region show clockwise rotations. We use the rotation patterns together with known fault zones to argue that the counterclockwise-rotating domain of south-central Anatolia was bounded by the Savcılı Thrust Zone and Deliler-Tecer Fault Zone in the north and by the African-Arabian trench in the south, the western boundary of which is poorly constrained and requires future study. Our new paleomagnetic constraints provide a key ingredient for future kinematic restorations of the Anatolian tectonic collage.

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Section: Compilation Of Previous Paleomagnetic Resultsmentioning

confidence: 99%

Paleomagnetic constraints on the timing and distribution of Cenozoic rotations in Central and Eastern Anatolia

et al. 2018

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“…First, we test it against available paleomagnetic data. We use the thereto developed APWP tool by Li et al () that is integrated into the statistics portal of the n platform of Paleomagnetism.org (Koymans et al, ). This tool allows calculating a Global Apparent Polar Wander Path (whereby we used the version of Torsvik et al, ) in the coordinates for any element in the reconstruction.…”

Section: Approachmentioning

confidence: 99%

“…For the Japanese Islands, only data from Oligocene and younger rocks were compiled to test opening scenarios for the Japan Basin. We used selection criteria formulated by Lippert et al () and Li et al () excluding sites that (1) were not used by the authors of the original publication if reason for exclusion was provided; (2) were not analyzed using principle component analysis (Kirschvink, ); (3) were (most likely) remagnetized according to the original authors; (4) include less than four samples for sedimentary or igneous sites, or less than four lava sites for volcanic localities; (5) have k‐values (precision parameter of Fisher, ) below 50 for volcanic sites, or an A95 value exceeding A95 max , or below A95 min sensu (Deenen et al, ) for igneous or sedimentary sites. We excluded paleomagnetic localities that were based on an average of multiple sedimentary site averages if statistical details on a per‐site level were not reported.…”

Section: Paleomagnetic Constraintsmentioning

confidence: 99%

Reconstruction of Subduction and Back‐Arc Spreading in the NW Pacific and Aleutian Basin: Clues to Causes of Cretaceous and Eocene Plate Reorganizations

2019

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The Eocene (~50–45 Ma) major absolute plate motion change of the Pacific plate forming the Hawaii‐Emperor bend is thought to result from inception of Pacific plate subduction along one of its modern western trenches. Subduction is suggested to have started either spontaneously, or result from subduction of the Izanagi‐Pacific mid‐ocean ridge, or from subduction polarity reversal after collision of the Olyutorsky arc that was built on the Pacific plate with NE Asia. Here we provide a detailed plate‐kinematic reconstruction of back‐arc basins and accreted terranes in the northwest Pacific region, from Japan to the Bering Sea, since the Late Cretaceous. We present a new tectonic reconstruction of the intraoceanic Olyutorsky and Kronotsky arcs, which formed above two adjacent, oppositely dipping subduction zones at ~85 Ma within the north Pacific region, during another Pacific‐wide plate reorganization. We use our reconstruction to explain the formation of the submarine Shirshov and Bowers Ridges and show that if marine magnetic anomalies reported from the Aleutian Basin represent magnetic polarity reversals, its crust most likely formed in an ~85‐ to 60‐Ma back‐arc basin behind the Olyutorsky arc. The Olyutorsky arc was then separated from the Pacific plate by a spreading ridge, so that the ~55‐ to 50‐Ma subduction polarity reversal that followed upon Olyutorsky‐NE Asia collision initiated subduction of a plate that was not the Pacific. Hence, this polarity reversal may not be a straightforward driver of the Eocene Pacific plate motion change, whose causes remain enigmatic.

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“…Most of the published paleomagnetic studies (Funahara et al, ; Huang & Opdyke, , ; Li, Advokaat, et al, ; Li et al, ; Otofuji et al, ; Tong et al, ) associate the CW rotations to the eastward drifting microplate model put forward by Tapponnier et al (, ), identifying each shear zone‐bounded domain with a rigid rotating block. However, a major problem of space would arise if one assumes that the N‐S elongated Baoshan and Lanping domains rotated CW by some 80°, questioning the internal block rigidity and appropriate delineation of a tectonic block.…”

Section: Geologic Settingmentioning

confidence: 99%

Paleomagnetic Evidence for 25–15 Ma Crust Fragmentation of North Indochina (23–26°N): Consequence of Collision With Greater India NE Corner?

Speranza

Pellegrino

Zhang

et al. 2019

Geochem Geophys Geosyst

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The Cenozoic deformation of SE Asia is classically related to India‐Asia collision and Tibet Plateau rise, supposedly resulting in the southeastward drift of lithospheric blocks bounded by strike‐slip faults with displacements in the order of 1,000 km. Here we report on the paleomagnetism of 44 Triassic‐Cretaceous red bed sites from the northern Simao, Chuandian, and Lanping “blocks,” along both sides of the Ailao Shan‐Red River shear zone (north Indochina). In the Simao domain, remagnetization predates folding and subsequent 48–70° clockwise rotation of three 2–5 km wide subblocks separated by two unrotated blocks. A primary magnetization component from the Lanping domain center suggests variably clockwise rotated (up to 95° ± 24°) sites, interrupted by a 2–6 km wide block that is rotated counterclockwise by 27° ± 6°. Thus, the Lanping and Simao “blocks” are far from being rigid, being made of a mosaic of independently deforming subblocks, whose kinematics and association with documented tectonics are speculative. It is unclear whether both folding and widespread remagnetization were synchronous or diachronous across north Indochina, but (considering previously published results) strike‐slip activity along major shear zones, remagnetization, rotations, and crustal shortening overlapped within the 32–15 Ma time window, thus were likely genetically related. As opposed to previous models, we suggest that in early to mid‐Cenozoic times, north Indochina was under the influence of oblique Neo‐Tethys subduction. Collision between the NE corner of Greater India and Indochina at ~30 Ma yielded ENE‐WSW shortening and strike‐slip reactivation of preexisting faults, in turn fragmenting the crust into small, independently rotating, blocks.

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Paleomagnetic constraints on the Mesozoic-Cenozoic paleolatitudinal and rotational history of Indochina and South China: Review and updated kinematic reconstruction

Cited by 129 publications

References 174 publications

Paleomagnetic constraints on the timing and distribution of Cenozoic rotations in Central and Eastern Anatolia

Paleomagnetic constraints on the timing and distribution of Cenozoic rotations in Central and Eastern Anatolia

Reconstruction of Subduction and Back‐Arc Spreading in the NW Pacific and Aleutian Basin: Clues to Causes of Cretaceous and Eocene Plate Reorganizations

Paleomagnetic Evidence for 25–15 Ma Crust Fragmentation of North Indochina (23–26°N): Consequence of Collision With Greater India NE Corner?

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