Results 171 to 180 of about 381 (215)

Climate Vulnerability of Australian Seafood Systems: A National Assessment of Exposure and Adaptive Capacity

Fisheries Oceanography, EarlyView.
ABSTRACT Marine waters are becoming warmer and acidified and experiencing more intense and longer heatwaves under climate change. These changes are already impacting marine ecosystems and seafood production, which are vital for supporting food security and economic productivity.
Stephanie Brodie, Laura K. Blamey, Ana Bugnot, Rodrigo H. Bustamante, Julia L. Blanchard, Lara Buhagiar, Elizabeth A. Fulton, Alistair J. Hobday, Éva E. Plagányi, Anthony J. Richardson, Richard Matear, Skipton N. C. Woolley, Rebecca Darbyshire   +12 more
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U–Pb SHRIMP dating of uraniferous opals

Chemical Geology, 2006
Abstract U–Pb and U-series analyses of four U-rich opal samples using sensitive high-resolution ion microprobe (SHRIMP) demonstrate the potential of this technique for the dating of opals with ages ranging from several tens of thousand years to millions of years.
Nemchin, Alexander, Neymark, L., Simons, S.   +2 more
openaire   +2 more sources

Identifying granite sources by SHRIMP U-Pb zircon geochronology: an application to the Lachlan foldbelt

Contributions to Mineralogy and Petrology, 1999
The potential genetic link between granites and their host sediments can be assessed using zircon age inheritance patterns. In the Lachlan fold belt, southeastern Australia, granites and associated high-grade metasedimentary rocks intrude low-grade Ordovician country rock. This relationship is well-exposed in the Tallangatta region, northeast Victoria (
Keay, S., Steele, D., Compston, W.
openaire   +4 more sources

SHRIMP U-Pb zircon geochronology of the Narryer Gneiss Complex, Western Australia

Precambrian Research, 1991
Abstract SHRIMP U-Pb zircon geochronology of the Narryer Gneiss Complex of the Yilgarn Craton, Australia, has confirmed that its eastern half contains abundant early Archaean gneisses (3300–3730 Ma), but has found gneisses with ages of only 3000 Ma or less in its western half.
Allen P. Nutman, Peter D. Kinny, William Compston, Ian S. Williams   +3 more
openaire   +1 more source

Isotopic U–Pb-SHRIMP dating of Mugodzhari eclogites (Kazakhstan)

Доклады Российской академии наук. Науки о Земле / Doklady Earth Sciences
In the extreme south of the Urals, zircons from eclogites and amphibolite were dated in metamorphites of the East Mugodzhar zone. Of the 4 eclogite samples, close (and the most “ancient” – 520±4 million years) concordant age values were obtained in 3 samples, which probably corresponds to the age of the protolith.
openaire   +1 more source

The first zircon U-Pb dating (SHRIMP II) for the silurian ophiolites in the Urals

Doklady Earth Sciences, 2010
The rocks of the ophiolite association are wide spread within the Ural mobile belt. For this reason dating of their formation is of great interest due to its tectonic significance, allowing interpretation of the history of geological development of the region.
V. N. Smirnov, K. S. Ivanov
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U-Pb SHRIMP dating of zircons from metamorphic complexes in eastern Kamchatka

Russian Journal of Pacific Geology, 2012
The metamorphic complexes of eastern Kamchatka exposed on the Khavyven Highland and Karaginsky Island, as well as on the Kamchatka and Ozernoi peninsulas, compose large (up to 1.5 km) elongated blocks spatially associated with ophiolitic peridotite and gabbroic rock bodies (the Khavyven Highland and Karaginsky Island) or make up isolated fragments and ...
I. A. Tararin, Z. G. Badredinov, B. A. Markovsky, B. I. Slyadnev   +3 more
openaire   +1 more source

SHRIMP U-Pb zircon dating on the metamorphism of the Zanhuang Complex

2011
Abstract
Xiao, LL, Guo, J, Wu, C, Wan, YS, Li, XH
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Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon U‐Pb dating

Acta Geologica Sinica - English Edition, 2013
AbstractThe Qingbaikouan System is the lowest unit of the Neoproterozoic Erathem in Chinese stratigraphic succession, and it now provides a precise geochronological framework and geological time scale for mapping and stratal correlation in China. However, a sensitive high‐resolution ion microprobe (SHRIMP) U‐Pb zircon age date (1368±12 Ma) obtained ...
Linzhi GAO, Xiaozhong DING, Chongyu YIN, Chuanheng ZHANG, Frank R. ETTENSOHN   +4 more
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Conventional and SHRIMP U-Pb Zircon Dating of the Chor Granitoid, Himachal Himalaya

Journal of the Geological Society of India, 2003
Abstract Conventional zircon U-Pb analyses of optically clear multi-grain fractions from the Chor Granitoid sample - CH 174 provide a complex pattern with eight points yielding a reference line with an upper intercept age of c. 910 Ma and large scatter. Three zircon fractions from the more deformed sample CH 4/11 of this body define a
openaire   +1 more source