Paleomagnetic implications on the evolution of the tethys belt from the atlantic ocean to the pamirs since the triassic

Westphal, M.; Bazhenov, Mikhail L.; Lauer, J. P.; Pechersky, D. M.; Sibuet, Jean-Claude

doi:10.1016/0040-1951(86)90193-9

Cited by 218 publications

(55 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Contrasts with the later Jurassic results are consistent with African APWP, indicating movement into lower palaeolatitudes between Early and midJurassic times (Westphal et al 1986;Besse and Courtillot 1991; Table 2). Possible small movement into lower latitudes between Liassic and Malm times (although within error limits) follows from comparison of results from sites 4-7 with site 1.…”

Section: Discussionsupporting

confidence: 86%

Palaeomagnetic evidence for the Gondwanian origin of the Taurides and rotation of the Isparta Angle, southern Turkey

et al. 2002

View full text Add to dashboard Cite

The Taurides, the southernmost of the three major tectonic domains that constitute present-day Turkey, were emplaced following consumption of the Tethyan Ocean in Late Mesozoic to mid-Tertiary times. They are generally assigned an origin at the northern perimeter of Gondwana. To refine palaeogeographic control we have investigated the palaeomagnetism of a range of Jurassic rocks. Forty-nine samples of Upper Jurassic limestones preserve a dual polarity remanence (D/I ¼ 303/ À 9 , 95 ¼ 6 ) interpreted as a primary magnetization acquired close to the equator and rotated during emplacement of the Taurides. Results from mid-Jurassic dolerites confirm a low palaeolatitude for the Tauride Platform during Jurassic times at the Afro-Arabian sector of Gondwana. Approximately 4000 km of Tethyan closure subsequently occurred between Late Jurassic and Eocene times. Although related Upper Jurassic limestones and Liassic redbeds preserve a sporadic record of similar remanence, the dominant signature in these latter rocks is an overprint of probable mid-Miocene age, probably acquired during a single polarity chron and imparted by migration of a fluid front during nappe loading. This is now rotated consistently anticlockwise by c. 30 and conforms to results of previous studies recording bulk Neogene rotation of the Isparta region following Lycian nappe emplacement. The regional distribution of this overprint implies that the Isparta Angle (IA) has been subject to only small additional closure (< 10 ) since Late Miocene time. A smaller amount (c. 6 ) of clockwise rotation within the IA since Early Pliocene times is associated with an ongoing extensional regime and reflects an expanding curvature of the Tauride arc produced by southwestward extrusion of the Anatolian collage as a result of continuing northward motion of Afro-Arabia.

show abstract

Section: Discussionsupporting

confidence: 86%

Palaeomagnetic evidence for the Gondwanian origin of the Taurides and rotation of the Isparta Angle, southern Turkey

et al. 2002

View full text Add to dashboard Cite

show abstract

“…However, as has been discussed by Westphal et al [1986] and Besse and Courtillot [1991], the data reliability is difficult to evaluate. On the other hand, we can follow the assumption of Besse and Courtillot that for the periods of interest here, Siberia was rigidly attached to Eurasia.…”

Section: Dzungaria Versus Siberiamentioning

confidence: 99%

Paleomagnetic study of Mesozoic continental sediments along the northern Tien Shan (China) and heterogeneous strain in central Asia

Chen¹,

Cogné²,

Courtillot³

et al. 1991

J. Geophys. Res.

View full text Add to dashboard Cite

show abstract

“…In the south it is largely covered by sandy formations of Quaternary age, representing the Lut depression (Takin 1972). Berberian (1973) suggested that the Lut block behaved rigidly and it has been argued that the block underwent a large anticlockwise rotation in response to the collision between India and Eurasia (Westphal et al 1986;Besse et al 1998;Bagheri 2008). Accordingly, the present eastern border of the Lut block (originally south to southwest facing) would have belonged to the active margin of the now-subducted Neotethys Ocean (Dercourt et al 1986(Dercourt et al , 2000Golonka 2004;Bagheri and Stampfli 2008).…”

Section: Introductionmentioning

confidence: 97%

Magmatic and metamorphic history of the Deh-Salm metamorphic Complex, Eastern Lut block, (Eastern Iran), from U–Pb geochronology

Mahmoudi¹,

Masoudi²,

Corfú

et al. 2009

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

The Deh-Salm metamorphic Complex (DMC) of the Lut block in East Iran consists of metapelites, amphibolites, marbles, and metasandstones intruded by granite and pegmatites. U-Pb dating of zircon, monazite, xenotime, and titanite by ID-TIMS show that the granitic rocks were emplaced at 166-163 Ma, confirming that the high temperature metamorphism was synchronous with the intrusive activity, and that the region cooled rapidly thereafter. Late-to post-magmatic hydrothermal activity was probably responsible for the late crystallization, at 159.5 Ma, of zircon and titanite in an amphibolite and of monazite in granite. Xenocrystic zircons yield indications for a Carboniferous component in the source, together with a variety of Precambrian ages, which indicate a provenance of the sedimentary protolith from mature continental crust. The timing and rapidity of the events are consistent with evolution of the DMC in a back-arc environment during the Jurassic subduction of the Neotethys Ocean.

show abstract

Paleomagnetic implications on the evolution of the tethys belt from the atlantic ocean to the pamirs since the triassic

Cited by 218 publications

References 72 publications

Palaeomagnetic evidence for the Gondwanian origin of the Taurides and rotation of the Isparta Angle, southern Turkey

Palaeomagnetic evidence for the Gondwanian origin of the Taurides and rotation of the Isparta Angle, southern Turkey

Paleomagnetic study of Mesozoic continental sediments along the northern Tien Shan (China) and heterogeneous strain in central Asia

Magmatic and metamorphic history of the Deh-Salm metamorphic Complex, Eastern Lut block, (Eastern Iran), from U–Pb geochronology

Contact Info

Product

Resources

About