Search Results - "Precambrian"

Precambrian by Linnemann, U., Romer, R., Pin, C., Aleksandrowski, P., Bula, Z., Geisler, T., Kachlik, V., Krzeminska, E., Mazur, S., Motuza, G., Murphy, J., Nance, R., Pisarevsky, Sergei, Schulz, B., Ulrich, J., Wiszniewska, J., Zaba, J., Zeh, A.

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Paleomagnetic Data and Dyke Swarms Geometries – Important Tools for Precambrian Paleogeographic Reconstructions by Pisarevskiy, Sergei

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New Paleointensity Data Suggest Possible Phanerozoic-Type Paleomagnetic Variations in the Precambrian by Lloyd, S.J., Biggin, A.J., Li, Zheng-Xiang

“…The state of the geomagnetic field throughout the Precambrian era is largely unknown. Approximately 8% of global paleointensity records account for ∼4 billion years of Earth history. …”
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A brief synthesis of Indian Precambrian basins: classification and genesis of basin-fills by Miall, A., Catuneanu, O., Eriksson, P., Mazumder, Rajat

“…The geology, inferred evolution and classification according to widely accepted schemes of 22 basins from the Indian Precambrian record on the Arravali–Bundelkhand, Singhbhum, Bastar and Dharwar cratons are discussed in this volume. …”
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The Precambrian Geology of the North China Craton: A Review and Update of the Key Issues by Wilde, Simon

“…Because literature on the NCC is so voluminous, it of necessity focuses on specific aspects that have wider applicability to the nature of Precambrian cratons in general. The assembly of the craton is examined and opposing views evaluated. …”
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Precambrian reidite discovered in shocked zircon from the Stac Fada impactite, Scotland by Reddy, S., Johnson, T., Fischer, S., Rickard, W., Taylor, Richard

“…However, the record of Precambrian impacts is poorly constrained due to the dynamic nature of plate tectonics, erosion, and deposition of younger rocks that may destroy or cover the evidence. …”
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The petrochemistry of metabasites from a precambrian amphibolite-granulite transition zone, South Norway by Clough, Peter W. L.

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First Precambrian palaeomagnetic data from the Mawson Craton (East Antarctica) and tectonic implications by Liu, Y., Li, Zheng-Xiang, Pisarevskiy, Sergei, Kirscher, Uwe, Mitchell, R., Stark, J. Camilla, Clark, Christopher, Hand, M.

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Precambrian to Paleozoic Tectonothermal Evolution in the Korla Area, Northern Tarim Craton, NW China by Ge, Rongfeng

“…Systematic in-situ zircon U-Pb dating and Hf-0 isotopic analysis of zircon, together with whole-rock geochemical analyses, were carried out on Precambrian metamorphic rocks and intruding granitoids in the Koria area, northeastern Tarim Craton. …”
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Is the Ordos Block Archean or Paleoproterozoic in age? Implications for the Precambrian evolution of the North China Craton by Wan, Yusheng, Xie, Hangqiang, Yang, Hua, Wang, Zejiu, Liu, Dunyi, Kröner, Alfred, Wilde, Simon, Geng, Yuansheng, Sun, Liuyi, Ma, Mingzhu, Liu, Shoujie, Dong, Chunyan, Du, Lilin

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Two episodes of regional-scale Precambrian hydrothermal alteration in the eastern Pilbara, Western Australia by Blake, T., Rothery, E., Muhling, J., Drake-Brockman, J., Sprigg, L., Ho, S., Rasmussen, Birger, Fletcher, Ian

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Precipitation of iron silicate nanoparticles in early Precambrian oceans marks Earth’s first iron age by Rasmussen, Birger, Krapež, Bryan, Muhling, Janet, Suvorova, A.

“…By inference from experimental studies simulating the composition of the early Precambrian ocean, we suggest that the nanoparticles precipitated from anoxic seawater enriched in silica and dissolved iron, and were silicified upon deposition. …”
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Reply to the comment by Zhou et al. on: "Revisiting the "Yanbian Terrane": Implications for Neoproterozoic tectonic evolution of the western Yangtze Block, South China" [Precambrian Res. 151 (2006) 14-30] [Precambrian Res. 154 (2007) 153-157] by Li, X., Li, Zheng-Xiang, Sinclair, J., Li, W., Carter, G.

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The evolution of the metamorphic series in the NW Fujian Province, the NE Cathaysia Block, and the significance in the reconstruction of Precambrian Supercontinents by Zeng, Wen

“…Field observation, systematic sampling and petrographic investigation combined with of whole rock geochemistry, zircon U-Pb, Lu-Hf isotopes, trace elements, amphibole and biotite 40Ar/39Ar analyses and mineral chemistry study were applied in this project to determine the nature, ages and relations of the leucosomes, felsic paragneiss and mafic metamorphic rocks in study area and their implications to the reconstruction of the Precambrian Rodina Supercontinent.Following conclusions are made: 1. …”
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New age constraints on Neoproterozoic diamicites in Kuruktag, NW China and Precambrian crustal evolution of the Tarim Craton by He, J., Zhu, W., Ge, Rongfeng

“…According to the parallel Precambrian age distribution and Neoproterozoic stratigraphy, we propose that the Tarim Craton had a close relationship with the Yangtze Craton in Rodinia.…”
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Palaeomagnetism of Precambrian igneous rocks in Australia and East Antarctica: implications for the pre-Pangea supercontinents and supercontinent cycle by Liu, Yebo

“…This thesis presents a series of new, high-quality palaeomagnetic data from Precambrian igneous rocks in Western Australia, South Australia and East Antarctica. …”
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A one-billion-year gap in the Precambrian history of the southern Siberian craton and the problem of the transproterozoic supercontinent by Gladkochub, D., Donskaya, T., Wingate, Michael, Mazukabzov, A., Pisarevsky, Sergei, Sklyarov, E., Stanevich, A.

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Detrital Zircon U-Pb Age Data, and Precambrian Provenance of the Paleozoic Guaritas Formation, Southern Brazilian Shield by Hartmann, L., Santos, J., McNaughton, Neal

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The Precambrian Khondalite Belt in the Daqingshan area, North China Craton: evidence for multiple metamorphic events in the Palaeoproterozoic era by Wan, Y., Liu, D., Dong, C., Xu, Z., Wang, Z., Wilde, Simon, Yang, Y., Liu, Z., Zhou, H.

“…The main conclusions are as follows: (1) The early Precambrian supracrustal rocks belong to three sequences: a 2.56–2.51 Ga supracrustal unit (the previous Sanggan ‘group’), a 2.51–2.45 Ga supracrustal unit (a portion of the previous upper Wulashan ‘group’) and a 2.0–1.95 Ga supracrustal unit (including the previous lower Wulashan ‘group’, a portion of original upper Wulashan ‘group’ and the original Meidaizhao ‘group’) the units thus do not represent a true stratigraphy; (2) Strong tectono-thermal events occurred during the late Neoarchaean to late Palaeoproterozoic, with four episodes recognized: 2.6–2.5, 2.45–2.37, 2.3–2.0 and 1.95–1.85 Ga, with the latest event being consistent with the assembly of the Palaeoproterozoic supercontinent Columbia; (3) During the late Neoarchaean to late Palaeoproterozoic (2.55–2.5, 2.37 and 2.06 Ga) juvenile, mantle-derived material was added to the crust.…”
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Palaeoproterozoic supercontinents and global evolution: correlations from core to atmosphere by Reddy, Steven, Evans, D.

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