Gondwana Research
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Published on Jun 1, 2019in Gondwana Research 5.66
James S. Crampton24
Estimated H-index: 24
(GNS Science),
Nick Mortimer30
Estimated H-index: 30
(GNS Science)
+ 5 AuthorsHannu Seebeck9
Estimated H-index: 9
(GNS Science)
Abstract During the Permian to Cretaceous, Zealandia occupied a position on the proto-Pacific-facing, convergent margin of Gondwana. Subduction on this margin ceased somewhere between ~105 Ma and perhaps 70 Ma, but the timing of this tectonic transition remains controversial. Resolution of this uncertainty is important for tectonic reconstructions of the southwest Pacific and for global plate-tectonic models. Here, we revisit the problem by reference to new stratigraphic and geochemical data fro...
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Published on Mar 1, 2019in Gondwana Research 5.66
Hans-Jürgen Gawlick13
Estimated H-index: 13
,
Sigrid Missoni9
Estimated H-index: 9
Abstract The Middle-Late Jurassic mountain building process in the Western Tethyan realm was triggered by west- to northwestward-directed ophiolite obduction onto the wider Adriatic shelf. This southeastern to eastern Adriatic shelf was the former passive continental margin of the Neo-Tethys, which started to open in the Middle Triassic. Its western parts closed from around the Early/Middle Jurassic boundary with the onset of east-dipping intra-oceanic subduction. Ongoing contraction led to ophi...
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Published on Feb 1, 2019in Gondwana Research 5.66
Xiaoran Zhang17
Estimated H-index: 17
(Academia Sinica),
Guochun Zhao93
Estimated H-index: 93
(University of Hong Kong)
+ 1 AuthorsMin Sun91
Estimated H-index: 91
(University of Hong Kong)
Abstract Advancing and retreating subduction zones at convergent margins, primary sites of continental crust growth and loss, are the cornerstones of tectonic evolution of accretionary orogens. Yet, distinguishing the tectonic mode (advancing, retreating, or switching) of subduction zones in fossil orogens is not always straightforward due to the scarcity of strong evidence. As an alternative approach, we utilized zircon Hf isotope mapping of arc magmatism (previously-published data) from differ...
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Published on Apr 1, 2019in Gondwana Research 5.66
Peter Vršanský9
Estimated H-index: 9
,
Hemen Sendi2
Estimated H-index: 2
(Comenius University in Bratislava)
+ 7 AuthorsThierry Garcia (Rafael Advanced Defense Systems)
Abstract Among insects, 236 families in 18 of 44 orders independently invaded water. We report living amphibiotic cockroaches from tropical streams of UNESCO BR Sumaco, Ecuador. We also describe the first fossil aquatic roach larvae (6 spp.; n = 44, 1, 1, 1, 1, 1) from the most diverse tropical Mesozoic sediments (Middle Jurassic Bakhar Fm in Mongolia, Kimmeridgian Karabastau Fm in Kazakhstan; Aptian Crato Fm in Brazil), and the Barremian Lebanese and Cenomanian Myanmar ambers. Tropic-limited oc...
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Published on Jul 1, 2019in Gondwana Research 5.66
Shun Li6
Estimated H-index: 6
,
Carl Guilmette13
Estimated H-index: 13
+ 4 AuthorsUpendra Baral4
Estimated H-index: 4
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Published on Jan 1, 2019in Gondwana Research 5.66
Feng Cheng2
Estimated H-index: 2
(University of Rochester),
Carmala N. Garzione33
Estimated H-index: 33
(University of Rochester)
+ 4 AuthorsZhaojie Guo25
Estimated H-index: 25
(Peking University)
Understanding the pre-collisional paleogeography in the NE Tibetan plateau provides insights into the growth mechanisms of the northern portion of the plateau in the Cenozoic. We conducted sandstone petrography analysis and determined U-Pb ages for detrital zircons from Cretaceous sandstone from the Yumen Basin and the northern Qilian Shan. Cretaceous strata in the northern Yumen Basin yield a unimodal age population at 290–240 Ma that indicates primary derivation from Bei Shan. Cretaceous strat...
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Published on Feb 1, 2019in Gondwana Research 5.66
Peter A. Cawood64
Estimated H-index: 64
(University of St Andrews),
Chris J. Hawkesworth100
Estimated H-index: 100
(University of St Andrews)
Abstract Models of the volume of continental crust through Earth history vary significantly due to a range of assumptions and data sets; estimates for 3 Ga range from 120% of present day volume. We argue that continental area and thickness varied independently and increased at different rates and over different periods, in response to different tectonic processes, through Earth history. Crustal area increased steadily on a pre-plate tectonic Earth, prior to ca. 3 Ga. By 3 Ga the area of continen...
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