The Cathaysian and Gondwana floras: their contribution to determining the boundary between eastern Gondwana and Laurasia

Xingxue, Li; Xiuyuan, Wu

doi:10.1016/0743-9547(94)90041-8

Cited by 16 publications

(4 citation statements)

References 13 publications

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“…The dominant 450-600 Ma age peak, the presence of 2000-2500 Ma ages and the lack of zircons between 1700 and 1900 Ma indicate that the Karakorum gneiss was probably derived from sediments that were shed from Gondwana or a Gondwanan fragment (Figure 2c). This is consistent with paleontological work that found Gondwanan, or mixed Gondwanan-Cathaysian fossil assemblages in the Karakorum Terrane [Sharma et al, 1980;Xingxue and Xiuyuan, 1994;Srivastava and Agnihotri, 2010].…”

Section: Discussionsupporting

confidence: 90%

Where does India end and Eurasia begin?

White

Ahmad²,

Lister

et al. 2011

Geochem. Geophys. Geosyst.

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The Indus Suture Zone is defined as the plate boundary between India and Eurasia. Here we document geochronological data that suggest that Indian rocks outcrop to the north of this suture zone. The inherited age spectrum of zircons from mylonitic gneiss collected in the southern part of the Karakorum Batholith is similar to those obtained from the Himalayan Terrane, the Pamir and is apparently Gondwanan in its affinity. These data are taken to indicate that the Karakorum Terrane was once a component of Gondwana, or at least derived from the erosion of Gondwanan material. Several continental ribbons (including the Karakorum Terrane) were rifted from the northern margin of Gondwana and accreted to Eurasia prior to India‐Eurasia collision. Many therefore consider the Karakorum Terrane is the southern margin of Eurasia. However, we do not know if rifting led to the creation of a new microplate(s) or simply attenuated crust between Gondwana and these continental ribbons. Thus there is a problem using inherited and detrital age data to distinguish what is “Indian” and what is “Eurasian” crust. These findings have implications for other detrital/inherited zircon studies where these data are used to draw inferences about the tectonic history of various terranes around the world.

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Section: Discussionsupporting

confidence: 90%

Where does India end and Eurasia begin?

White

Ahmad²,

Lister

et al. 2011

Geochem. Geophys. Geosyst.

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“…6a), as discussed in Section 2. The Karakoram terrane can be linked to Gondwana based on its fossil assemblages (Sharma et al, 1980;Srivastava and Agnihotri, 2010;Xingxue and Xiuyuan, 1994). The latter authors identify…”

Section: The Eurasian Marginmentioning

confidence: 95%

A tectonic model reconciling evidence for the collisions between India, Eurasia and intra-oceanic arcs of the central-eastern Tethys

et al. 2015

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“…9) (Grunt and Dmitriyev, 1973). The Eurydesma fauna reported by Liu and Cui (1983) in the Rutog area of western Xizang (Tibet) has since been claimed by Fang Zhongjie (in Liu Benpei et al, 1991, p. 26) to be an identification error, although Dickins disagrees with Fang and considers the material to belong to Eurydesma (see also Li and Wu, 1993).…”

Section: Indian Subcontinent-western Chinamentioning

confidence: 98%

“…(The Himalayan Blaini boulder beds, once thought to be equivalent to the Tobra and Talchir, are now known to be of late Proterozoic to earliest Cambrian age [Brasier and Singh, 1987;Brookfield, 1987].) The faunas and floras associated with the glacial and glacigene strata, including the overlying Conularia-Eurydesma beds, have typically Gondwana-type taxa, not just in Kashmir, but in all other parts of India and Pakistan where beds of this age are present (Teichert, 1966(Teichert, , 1967(Teichert, , 1981Kummel and Teichert, 1970b;Nakazawa and Kapoor, 1979;Ranga Rao et al, 1979;Sohn and Chatterjee, 1979;Srikantia, 1981;Bhatia, 1984;Kapoor and Tokuoka, 1985;Nakazawa, 1985;Li Xingxue and Wu Xiuyuan, 1993).…”

Section: Indian Subcontinent-western Chinamentioning

confidence: 99%

Phanerozoic faunal and floral realms of the Earth; the intercalary relations of the Malvinokaffric and Gondwana faunal realms with the Tethyan faunal realm

Meyerhoff¹,

Boucot²,

Hull³

et al. 1996

Phanerozoic Faunal and Floral Realms of the Earth: The Intercalary Relations of the Malvinokaffric and Gondwana Faunal Realms W

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Biogeographical data comprise a largely neglected but potentially powerful tool for deciphering the tectonic evolution of the Phanerozoic Earth. This is true because the borders of biogeographical realms, regions, provinces, and subprovinces are natural barriers, some of them tectonic in origin. Yet most major biogeographical realm boundaries, based on floral and faunal distributions, do not coincide with the partly tectonic, partly computer-generated boundaries of plate tectonics.Instead, the paleontologic record shows that (1) a broad intercalary zone separates "northern" from "southern" biogeographical realms, and (2) this broad zone has existed during most, if not all, of Phanerozoic time. Within this intercalary zone, whose width ranges from several hundred to 5,000 km, strata bearing "northern" biotas are intercalated with strata bearing "southern" biotas and, in many areas, admixtures of "northern" and "southern" taxa are present within the same beds.During the Middle and Late Cambrian, the southern realm is the Atlantic Realm. (A globally low Early Cambrian climatic gradient does not permit easy definition of a southern realm.) Following the Cambrian, the two principal southern realms are the Malvinokaffric Realm (Ordovician-early Middle Devonian) and its successor, the Gondwana Realm (Early Permian-Early Cretaceous). The two are separated in time by the later Devonian, an interval of rather cosmopolitan biotas.

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The Cathaysian and Gondwana floras: their contribution to determining the boundary between eastern Gondwana and Laurasia

Cited by 16 publications

References 13 publications

Where does India end and Eurasia begin?

Where does India end and Eurasia begin?

A tectonic model reconciling evidence for the collisions between India, Eurasia and intra-oceanic arcs of the central-eastern Tethys

Phanerozoic faunal and floral realms of the Earth; the intercalary relations of the Malvinokaffric and Gondwana faunal realms with the Tethyan faunal realm

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