Radiolarians in the sedimentary record full pdf download free

Biostratigraphic data are correlated to the geological time continued until c. Chart of stratigraphic ranges of radiolarians present in samples and Published radiometric dates related to the Spongtang ophiolite are also indicated. Dilek, Y. Ophiolite Concept and the Evolution of The authors would like to thank J.

Guex and L. Geological Society of America, Special Papers, We are most grateful to our guides K. Raftan, J. Ophiolites in Earth History.

Geological Punchok, N. We also appreciate N. Aitchison for accompanying us Ding, L. Paleocene—Eocene record of ophiolite obduction and initial India—Asia collision, south central Tibet. Tectonics, 24, in the field. We are indebted to T. Danelian and L. This research was supported Dubois-Cote, V. Chemical Geology, , — Dupuis, C. Journal References of Asian Earth Sciences, 25, — Fuchs, G. The geology of western Zanskar. Jahrbuch der Geologischen Abrajevitch, A. Multicyclic history of the northern India from a palaeomagnetic study of the Dazuqu ophiolite, Southern Tibet.

Earth continental margin Northwestern Himalaya. AAPG Bulletin, 75, — Garzanti, E. Sedimentary record of the northward Ahmad, T. Geochemical and isotopic constraints on the age and origin of the Geodinamica Acta, 1, — Tectonophysics, , — Watts, A.

Discussion on subsidence history of the north Indian Aitchison, J. In: Geological Society, London, , — Malpas, J. Lithologic and tectonic environment of the Tectonic Evolution of China. Eclogae Geologicae Helvetiae, 77, — Aitchison, J. Remnants of a Cretaceous intra-oceanic subduction system within the Yarlung—Zangbo Girardeau, J.

Origin of the Xigaze suture southern Tibet. Earth and Planetary Science Letters, , — Ophiolite, Yarlung Zangbo suture zone, southern Tibet.

Tectonophysics, , Aitchison, J. New insights into the — Girardeau, J. Structure of the Xigaze Episodes, 25, 90— Stratigraphic and implications. Tectonics, 4, — A Geologic Time Scale. Neotethyan ophiolites along the Yarlung Tsangpo suture zone, Tibet.

In: Cambridge University Press, Cambridge. Geological Hawkins, J. Geology of supra-subduction zones—Implications for the Society, London, Special Publications, , — In: Dilek, Y. When and where did India and and the Evolution of Geological Thought.

Geological Society of America, Asia collide? Journal of Geophysical Research, , 1— Special Papers, , — Aitchison, J. Jan, M. The Waziristan ophiolite, Pakistan: b. Shoshonites in southern Tibet record Late Jurassic rifting of a Tethyan general geology and chemistry of chromite and associated phases.

Economic intra-oceanic island arc. Journal of Geology, , — Geology, 80, — Structure and Jud, R. Biochronology and systematics of Early Cretaceous Radiolaria of the evolution of the Himalaya—Tibet orogenic belt. Nature, , 17— Western Tethys. Badengzhu, Reconnaissance Map. Did the Kohistan—Ladakh island arc collide first with India?

Geological Group 2, Lhasa. Society of America Bulletin, , — Baumgartner, P. Early Cretaceous radiolarians A. Beck, R. Stratigraphic evidence Nature, , 55— Zedong terrane, south Tibet. Lithos in press. McDermid, I. Bloomer, S. Early arc volcanism and the ophiolite problem; a the Yarlung—Zangbo suture zone, southeastern Tibet. Chemical Geology, , perspective from drilling in the western Pacific. In: Taylor, B.

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Geochemistry and tectonomagmatic affinity of the ophiolites, south Tibet. DPhil thesis, University of Oxford. Yungbwa ophiolite, SW Tibet. Lithos, 66, — Chan, J. Paleocene deep-marine sediments in southern central Tibet: Molnar, P. The collision between India and Eurasia. Indication of an arc—continent collision. Moores, E. Geology and Corfield, R.

Tectonic setting, origin, emplacement of the Muslim Bagh ophiolite complex. In: Panayiotou, A. Geological Survey Department, Nicosia, — Nicolas, A. The Xigaze ophiolite Danelian, T. Radiolarian evidence for the Tibet : a peculiar oceanic lithosphere. Marine Micropaleontology, 30, — U—Pb zircon ages from the Thakur, V. Wadia Birth Centenary Commemorative Volume. London, , — Pessagno, E. Lower Cretaceous radiolarian biostratigraphy of the Great Treloar, P. Cushman metamorphism in the NW Himalaya, Pakistan.

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The Xialu fauna contains many species common In spite of the diverse nature of the Mariana to the Torinosu fauna. The genera and Sethocapsa?

It is impor- cur abundantly in both the Xialu and the Tori- tant to note that Eucyrtidiellum pyramis Aita , nosu faunas. The Xialu radiolarians can be regarded as preserved nature. The first ceous time.

Possible locations of the Xialu, Tori- group is characterized by the common occurrence nosu and Mariana faunas are shown in Figure 6.

A of certain species among the three faunas; these mirror-image bi-temperate provincialism to the include Pseudodictyomitra carpatica Lozyniak , equator in radiolarian faunas is believed to have Loopus nuda Schaaf , Archaeodictyomitra excel- existed in the Ceno-Tethys and the Pacific Ocean lens Tan , Svinitzium pseudopuga Dumitrica, in latest Jurassic—earliest Cretaceous time.

Okada of Hokkaido University. We are grate- dictyomitra minoensis Mizutani. The third ful to Professor E. Carter for her constructive group includes radiolarian taxa that are abundant comments on the manuscript. Our field research in in the Mariana fauna but rare or absent in both the the Xialu area, southern Tibet, was assisted by Xialu and Torinosu faunas; these include Vallupus Doctors K. Kobayashi and T. Zeng of the Institute of Geo- trica, Artostrobium spp.

This research was vacca spp. Paleogeographic map modified from Scotese Balkema, Rotterdam. AITA Y. The Bulletin of Cretaceous strata of Japan and Tethyan regions. Mizunami Fossil Museum 8, — Micropaleontology 32, 97— News of Osaka Micro- Mountains, central Japan. Science Reports of the paleontologists, Special Volume, 12, — Pacific tion B 20, 47— Late Jurassic tropical Radiolaria: stratigraphy, rock paleomagnetism and clayey Vallupus and its related forms.

Jurassic and Lower Cretaceous slope. The Island Arc 4, — SATO T. Faunal composition of earliest Cre- nites du Jurassique du Japon. Trench in the western Pacific. In area, Zetang County, southern Tibet. Acta Micro- Metcalfe I. Himalaya Mountains, Xizang Tibet , China. Journal of Asian belt, southern Tibet. Micropaleontology Special Earth Sciences 20, — Publication 6, — Triassic ians from the Torinosu Group in Southwest Japan.

News of Osaka Micropaleontologists, Special — Volume, 5, 27— In Metcalfe I. Journal of subduction—accretion processes preserved on the the Geological Society of London , —9.

Related Papers Latest Jurassic-earliest Cretaceous radiolarian fauna from the Xialu chert in the Yarlung Zangbo suture zone, southern Tibet: Comparison with coeval western Pacific radiolarian faunas and paleoceanographic implications By Qun Yang. Late Jurassic Tithonian radiolarians from a clastic unit of the Khabarovsk complex Russian Far East : Significance for subduction accretion timing and terrane correlation By Sergey Zyabrev.

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