scispace - formally typeset
Search or ask a question
Topic

Gondwana

About: Gondwana is a research topic. Over the lifetime, 6078 publications have been published within this topic receiving 263050 citations. The topic is also known as: Gondwanaland.


Papers
More filters
Journal ArticleDOI
01 Aug 2011-Geology
TL;DR: In this article, the ages of detrital zircon suites from Paleozoic strata in the Arctic Alaska-Chukotka terrane (AAC), Alexander terrane, northern Sierra terrane and eastern Klamath terrane of the North American Cordillera suggest an exotic Gondwana or Baltic origin.
Abstract: U-Pb ages of detrital zircon suites from Paleozoic strata in the Arctic Alaska–Chukotka terrane (AAC), Alexander terrane, northern Sierra terrane, and eastern Klamath terrane of the North American Cordillera suggest an exotic Gondwana or Baltic origin. We evaluate these hypotheses with U-Pb ages of detrital zircon suites from Cambrian–Devonian strata of northern Baltica. Precambrian zircon populations (ca. 0.8–3.0 Ga) from Baltica compare well with similar age detritus in the AAC and Cordilleran terranes, but the amount and age of younger Neoproterozoic and Ordovician–Silurian components are variable. The AAC shares its stratigraphy with Baltica and has the most similar detrital zircon suites. Closing the Arctic places the AAC against the Lomonosov Ridge and the edge of Baltica in pre-Cretaceous time. After the Caledonian orogeny and before the Ural Mountains formed, the Baltica, AAC, and Cordilleran margins shared a Devonian–Carboniferous rift history and became along-strike portions of a Carboniferous–Permian continental margin. This rifting event might have been responsible for the initial separation of Baltica and Caledonian affinity terranes from this margin.

94 citations

Journal ArticleDOI
TL;DR: In this article, the authors presented ten plate tectonic reconstructions of the Southwest Indian Ridge that were produced using a new compilation of magnetic, bathymetric and satellite altimetry data, in combination with interactive computer graphics.

94 citations

Journal ArticleDOI
TL;DR: Recently discovered diamondiferous kimberlite (Group-II) pipes in central India have surprisingly young 40Ar/39Ar whole rock and U-Pb perovskite ages around 65 million years as mentioned in this paper.

94 citations

Journal ArticleDOI
S. Galeazzi, O. Point1, N. Haddadi1, J. Mather, D. Druesne 
TL;DR: The Berkine and Illizi basins are Palaeozoic-Mesozoic intraplate depressions that preserve an over 7000m thick sedimentary rock record and contain world-class petroleum systems with over 39 BBOE EUR hydrocarbon reserves.

94 citations


Network Information
Related Topics (5)
Sedimentary rock
30.3K papers, 746.5K citations
90% related
Continental crust
11.1K papers, 677.5K citations
90% related
Zircon
23.7K papers, 786.6K citations
89% related
Subduction
22.4K papers, 1.1M citations
88% related
Basalt
18.6K papers, 805.1K citations
87% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023269
2022497
2021307
2020281
2019293
2018230