Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China

Shi, Guanghai; Li, Xian‐Hua; Li, Qiuli; Chen, Zhenyu; Deng, Jun; Liu, Yingxin; Kang, Zhijuan; Er-cheng, Pang; Xu, Yongjian; Jia, Xiuming

doi:10.2113/econgeo.107.3.525

Cited by 38 publications

(15 citation statements)

References 64 publications

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“…They are mostly translucent and dark (Shi et al, 2012). Thirty five rutile grains analyzed in this study comes from the same sample (RZ-1) analyzed by Shi et al (2012). Our analytical results for this sample gave a Concordia age of 1781 ± 15 Ma (2σ, decay constant errors included, MSWD = 0.17, Fig.…”

Section: Rutile Standard Dxkmentioning

confidence: 73%

“…This studied rutile comes from a rutile deposit located in Henshan Mountain of the Trans-North China Orogen, which has been described by Shi et al (2012). It is one of the largest rutile deposits in China, with a resource of 6 million metric tons of titanium.…”

Section: Rutile Standard Dxkmentioning

confidence: 99%

“…Rutiles are hosted mainly by anthophyllite gneisses and mostly occur as euhedral tetragonal crystals or fragments with lengths ranging from 0.02 to 0.50 mm. They are mostly translucent and dark (Shi et al, 2012). Thirty five rutile grains analyzed in this study comes from the same sample (RZ-1) analyzed by Shi et al (2012).…”

Section: Rutile Standard Dxkmentioning

confidence: 99%

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In situ rutile U-Pb dating by laser ablation-MC-ICPMS

et al. 2013

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Section: Rutile Standard Dxkmentioning

confidence: 73%

Section: Rutile Standard Dxkmentioning

confidence: 99%

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In situ rutile U-Pb dating by laser ablation-MC-ICPMS

et al. 2013

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“…Trace-Element Data U-Pb analysis followed the same procedure and instrumentation as described above for apatite U-Pb analysis, including use of the Pb-based correction and the age screening approach. The primary age standard used was R10 rutile (Luvizotto et al, 2009), and the secondary standards were R19 and RZ3 rutile (Luvizotto et al, 2009;Shi et al, 2012), which were treated as unknowns during analysis and data reduction. For the R19 and RZ3 secondary standards, mean 207 Pb-corrected ages of 489.6 ± 2.1 Ma and 1806 ± 12 Ma were obtained, respectively.…”

Section: Rutile U-pb Geochronology Andmentioning

confidence: 99%

Spatial and temporal trends in exhumation of the Eastern Himalaya and syntaxis as determined from a multitechnique detrital thermochronological study of the Bengal Fan

et al. 2019

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The Bengal Fan provides a Neogene record of Eastern and Central Himalaya exhumation. We provide the first detrital thermochronological study (apatite and rutile U-Pb, mica Ar-Ar, zircon fission track) of sediment samples collected during International Ocean Discovery Program (IODP) Expedition 354 to the mid–Bengal Fan. Our data from rutile and zircon fission-track thermochronometry show a shift in lag times over the interval 5.59–3.47 Ma. The oldest sample with a lag time of <1 m.y. has a depositional age between 3.76 and 3.47 Ma, and these short lag times continue to be recorded upward in the core to the youngest sediments analyzed, deposited at <1 Ma. We interpret the earliest record of short lag times to represent the onset of extremely rapid exhumation of the Eastern Himalayan syntaxial massif, defined as the syntaxial region north of the Nam La Thrust. Below the interval characterized by short lag times, the youngest sample analyzed with long lag times (>6 m.y.) has a depositional age of 5.59–4.50 Ma, and the zircon and rutile populations then show a static peak until >12 Ma. This interval, from 5.59–4.50 Ma to >12 Ma, is most easily interpreted as recording passive erosion of the Greater Himalaya. However, single grains with lag times of <4 m.y., but with high analytical uncertainty, are recorded over this interval. For sediments older than 10 Ma, these grains were derived from the Greater Himalaya, which was exhuming rapidly until ca. 14 Ma. In sediments younger than 10 Ma, these grains could represent slower, yet still rapid, exhumation of the syntaxial antiform to the south of the massif. Lag times <1 m.y. are again recorded from 14.5 Ma to the base of the studied section at 17 Ma, reflecting a period of Greater Himalayan rapid exhumation. Mica 40Ar/39Ar and apatite U-Pb data are not sensitive to syntaxial exhumation: We ascribe this to the paucity of white mica in syntaxial lithologies, and to high levels of common Pb, resulting in U-Pb ages associated with unacceptably high uncertainties, respectively.

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“…9). Most metamorphic ages are 1900-1830 Ma (e.g., Chang et al 1999;Kröner et al 2005a, b;Jia 2007;Pang et al 2010;Shi et al 2012). Qian et al (2015) have recently obtained a metamorphic age of 1964 ± 25 Ma from the garnet amphibolite.…”

Section: Hengshan Regionmentioning

confidence: 99%

Paleoproterozoic Granulites in the North China Craton and Their Geological Implications

Guo

Zhai

Peng

et al. 2015

Precambrian Geology of China

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It is well known that there are widespread Paleoproterozoic high-grade rocks, mainly garnet amphibolites and granulites, in the North China Craton. The granulites could be classified into two types, the high-pressure granulites and (ultra-) high-temperature granulites. The high-pressure granulites mainly distribute in the Huai'an-Xuanhua, Hengshan, Fuping, Zanhuang, Qianlishan-Helanshan, and Jiaobei regions (the central and east of the craton), while the (ultra-)high-temperature granulites distribute mainly in the Liangcheng-Jining-Zhuozi and the Daqingshan regions (west of the northern margin of the craton). Nevertheless, (ultra-) high-temperature granulites have been also discovered in northeast Hebei, north Henan, Shandong and Liaoning provinces, and the Korean peninsula, and some drilling cores from under the Ordos basin, though some of them might be formed in the Late Archean. The Paleoproterozoic high-grade metamorphism has partly overprinted on the Late Archean low-to high-grade rocks. Both types of granulites have recorded clockwise P-T paths, which might indicate a process similar to those happened in the Phanerozoic orogenic belts. In the past 20-30 years, several different tectonic models have been introduced to interpret the environments of the Paleoproterozoic granulites in the North China Craton. However, there are several things need to be clarified before any conclusion, e.g., (1) the distribution of the different types of high-grade rocks; (2) the relationship between the high-pressure granulites and the (ultra-)high-temperature granulites; and (3) the exhumation rate and genetic mechanism of these rocks. These Paleoproterozoic high-grade rocks in the North China Craton are more complex than any high-grade rocks in the Phanerozoic orogens, and await further study.

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Ion Microprobe U-Pb Age and Zr-in-Rutile Thermometry of Rutiles from the Daixian Rutile Deposit in the Hengshan Mountains, Shanxi Province, China

Cited by 38 publications

References 64 publications

In situ rutile U-Pb dating by laser ablation-MC-ICPMS

In situ rutile U-Pb dating by laser ablation-MC-ICPMS

Spatial and temporal trends in exhumation of the Eastern Himalaya and syntaxis as determined from a multitechnique detrital thermochronological study of the Bengal Fan

Paleoproterozoic Granulites in the North China Craton and Their Geological Implications

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