نتایج جستجو برای: gondwanaland
تعداد نتایج: 101 فیلتر نتایج به سال:
Daphnia O.F. Müller (Crustacea: Cladocera: Daphniidae) is an important model in biology. It was concluded earlier that subgenus Daphnia s.str. occurs mainly in the northern hemisphere, subgenus Daphnia (Ctenodaphnia) in the southern hemisphere, which could suggest that: (1) the subgeneric differentiation is correlated with the Laurasia-Gondwanaland subdivision and (2) D. (Ctenodaphnia) is a tax...
It is believed that Greater India migrated from the southern hemisphere, collided with Gondwanaland, Angaraland and Cathaysia, thereby closing an intervening oceanic Tethys along the Indus-Yarlung-Tsangpo Suture Zone (IYTSZ).The suture zone is placed along the Chaman Fault in the Baluchistan-Afghanistan area in the west, and the Indus-Yarlung-Tsangpo in the north, whereas along the east from Th...
The Aravalli-Delhi Mobile Belt (ADMB) in the northwestern part of Indian Shield represents final stage a complex tectonic evolution witnessed by recognition three distinct orogenies that have resulted northwestward accretion terranes belonging to Archaean Neoproterozoic ages. In this contribution, review deformation structures different is discussed with their implications and global correlatio...
The star of last month's Chelsea Flower Show, also featuring in many other international events, was one of the world's rarest and most prehistoric trees, now the subject of innovative conservation strategies in its native Australia. Hannah Robertson reports. In a secret location deep within Wollemi National Park, 200 km northwest of Sydney, lives perhaps the most intriguing tree in the world: ...
Coalsack Bluff was the first discovery site in Antarctica for the latest Permian to earliest Triassic reptile Lystrosaurus. This together with discovery of Permian Glossopteris leaves during the heroic age of Antarctic exploration, indicated not only that Antarctica was part of Gondwanaland, but also that Antarctic rocks recorded faunas from the greatest of all mass extinctions at the Permian–T...
6 [1] We present evidence for the existence of an Australian-Antarctic Mantle Anomaly 7 (AAMA), which trends northwest-southeast (NW-SE) through the Australian-Antarctic 8 Discordance (AAD) on the Southeast Indian Ridge (SEIR), is confined to the upper 9 120 km of the mantle beneath the AAD, and dips shallowly to the west so that it extends to 10 a depth of about 150 km west of the AAD. Average...
[1] We present evidence for the existence of an Australian-Antarctic Mantle Anomaly (AAMA), which trends northwest-southeast (NW-SE) through the Australian-Antarctic Discordance (AAD) on the Southeast Indian Ridge (SEIR), is confined to the upper 120 km of the mantle beneath the AAD, and dips shallowly to the west so that it extends to a depth of about 150 km west of the AAD. Average temperatur...
Major, trace element, and Nd–Sr–Pb isotopic compositions of mantle xenolith-bearing Cenozoic basalts in southeastern China are measured to provide an insight into the nature of their mantle sources and processes. Application of a modified Ž . dynamic melting inversion DMI method presented here to SE China basalts suggests that Nushan and Fangshan basalts are formed by 4–11% partial melting of a...
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