Mi Jung Lee

Korea Polar Research Institute

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Jong Ik Lee

Korea Polar Research Institute

Philip R. Kyle

New Mexico Institute of Mining and Technology

Keisuke Nagao

Massachusetts Institute of Technology

Jihyuk Kim

Seoul National University

Sang-Bong Yi

Jeonbuk National University

Jung‐Woo Park

Seoul National University

Soon Do Hur

Korea Polar Research Institute

Seunghee Han

Kyungpook National University

Jacques Moutte

Mines Saint-Étienne

Yun Seok Yang

Inha University

Cooperative Institutions

Korea Polar Research Institute

Seoul National University

Korea Institute of Ocean Science and Technology

Korea Institute of Geoscience and Mineral Resources

Korea University

Pusan National University

Yonsei University

Korea University of Science and Technology

Korea Basic Science Institute

Chungnam National University

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Petrology and geochemistry of the Youngju and Andong granites in the northeastern Yeongnam Massif, Korea

Geosciences Journal (1998)

Jong Ik Lee Yong‐Joo Jwa Chung-Hwa Park Mi Jung Lee Jacques Moutte

Massif

Batholith

Protolith

10.1007/bf02910199

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Citations (11)

Magmatic Evolution of the Salmagora Ultramafic-Alkaline-Carbonatite-Complex, Kola Alkaline Province, NW Russia

대한지질학회 학술대회 (2004)

Chang Soo Kim Jong Ik Lee Mi Jung Lee Soon Do Hur Byeon‐Gak Choi

Carbonatite

Ultramafic rock

Source

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Citations (0)

Geochemical and isotopic constraints on the genesis and evolution of magmas from Mt. Melbourne volcanic field, Antarctica

Mi Jung Lee Seunghee Han Jong‐Min Baek Jong Ik Lee

Source

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Citations (0)

Mesozoic carbonatite complexes in Greenland

Journal of the geological society of Korea (2013)

Byong‐Kwon Park Mi Jung Lee Jong Ik Lee

Carbonatite

Source

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Citations (0)

Sr and Nd isotopic compositions of late Paleozoic Youngju and Andong granites in the northeastern Yeongnam Massif, Korea.

GEOCHEMICAL JOURNAL (1999)

Jong Ik Lee Yong‐Joo Jwa Chung-Hwa Park Mi Jung Lee Jacques Moutte

Rb-Sr whole-rock isochron ages and Sr and Nd isotopic ratios have been determined for Youngju and Andong granites in the northeastern Yeongnam Massif, Korea. Six samples of Youngju granites yield an isochron age of 267 ± 27 Ma with an initial Sr ratio of 0.71505 ± 0.00026. Seven samples of Andong granites give an isochron age of 361 ± 41 Ma and an initial Sr ratio of 0.70944 ± 0.00011. The isochron ages indicate that Youngju and Andong granites were emplaced in middle Permian and late Devonian of late Paleozoic, respectively. Calculated εSr (T) and εNd (T) values at 267 Ma for Youngju granites are 152.2∼156.4 and -19.7∼-18.0, and those values at 361 Ma for Andong granites are 73.8∼79.7 and -11.4∼-8.0. Model ages of Youngju and Andong granites are 2.4∼3.3 Ga and 1.4∼1.8 Ga, respectively, suggesting that the Youngju granitic magma was derived from highly LREE-enriched lower crust formed in Late Archean, whereas the Andong granitic magma from slightly LREE-enriched lower crust formed in Proterozoic. Initial 87Sr/86Sr ratios of the granites in Ogcheon Belt and Yeongnam Massif display a broad range, but have two peaks around 0.709 and 0.715 regardless of emplacement age. It is likely that these two kinds of sources which are isotopically different have widely existed in the lower crust of Ogcheon Belt and Yeongnam Massif.

Massif

10.2343/geochemj.33.153

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Citations (14)

Mineralogical evolution of the Sokli phoscorite-carbonatite complex, Kola Peninsula, Finland

Mi Jung Lee Jacques Moutte Jong Ik Lee Yeadong Kim Damien Garcia

Carbonatite

Kola peninsula

Peninsula

Source

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Phlogopite and tetraferriphlogopite from phoscorite and carbonatite associations in the Sokli massif, Northern Finland

Geosciences Journal (2003)

Mi Jung Lee Daniel García Jacques Moutte Jong Ik Lee

Phlogopite

Carbonatite

Massif

10.1007/bf02910260

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Citations (31)

Major elements and noble gases of the Jinju (H5) meteorite, an observed fall on March 9, 2014, in South Korea

GEOCHEMICAL JOURNAL (2016)

Keisuke Nagao Makiko K. Haba Jong Ik Lee Taehoon Kim Mi Jung Lee

The Jinju (H5) meteorite fell as four fragments in the Jinju area, Gyeonsangnam-do, South Korea, on March 9, 2014. The major element concentrations and noble gas isotopic compositions were determined for Jinju-1 and Jinju-2, stones of the first and second discoveries, respectively, by using X-ray fluorescence (XRF) analysis and noble gas mass spectrometry combined with total melting and stepwise heating noble gas extraction. The major element composition agrees well with that of equilibrated H chondrites. Very low contamination from terrestrial atmospheric noble gases was detected, which may be attributed to the rapid recovery of the stones within two days after the fall of the Jinju meteorite. A short cosmic ray exposure age of 2.4 My was obtained. The (U,Th)-He, and K-Ar ages are concordant at ca. 4.0 Gy, which suggests that no severe heating event occurred to cause a loss of He after the resetting at 4.0 Gy. Overabundances of trapped Ar and Kr, which were released at 800°C, were found in addition to "normal" Q gas of Ar, Kr and Xe at ≥1400°C. The low-temperature component could be explained by Ar and Kr supplied by an adjacent impact region that were trapped when the minerals of the Jinju meteorite were formed during cooling. The heavy shock event that occurred at 4.0 Gy might have produced the observed numerous vugs and vapor growth crystals in this meteorite (Choi et al., 2015) and could have supplied the Ar and Kr to thermally weak minerals.

Noble gas

Volatiles

10.2343/geochemj.2.0418

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Citations (2)

Trace element and isotopic evidence for temporal changes of the mantle sources in the South Shetland Islands, Antarctica

GEOCHEMICAL JOURNAL (2008)

Mi Jung Lee Jong Ik Lee Won Hie Choe Chung-Hwa Park

We present Sr-Nd-Pb isotope data from the Paleocene-Eocene volcanic rocks in King George Island, South Shetland Islands, West Antarctica. The initial isotopic ratios of the analyzed samples display limited variations: 143Nd/144Nd, 0.512790 to 0.512905 (εNd, +4.2 to +6.5); 87Sr/86Sr, 0.703342 to 0.703877 (εSr, -15.6 to -8.0); 206Pb/204Pb, 18.48 to 18.64; 207Pb/204Pb, 15.50 to 15.64; 208Pb/204Pb, 37.99 to 38.41. We interpret these data in combination with previously published trace and isotope data for Meso-Cenozoic volcanic rocks in the South Shetland Islands to gain a better understanding of the geochemical evolution of the mantle source region. The studied rocks are from four volcanic islands and range in age from 143 to 44 Ma. They have high abundances of large ion lithophile elements and light rare earth elements relative to high field strength elements, consistent with products of subduction related magmatism. The systematic inter-island variations are recognized from a comprehensive examination of the trace elements and isotopic compositions. The degree of enrichment of Sr-Nd-Pb isotopic compositions decreases towards younger samples, while the ratios of fluid-mobile elements/HFSE (Sr/Yb, Pb/Yb and U/Yb) gradually increase. The previous studies on these volcanic rocks concluded that the compositional variations of the South Shetland Islands volcanic suites were mainly controlled by two component mixing between altered MORB and Pacific sediments. However, we here propose that the compositional trends observed in the volcanic rocks of the South Shetland Islands can be created from the addition of a relatively constant subduction component to temporally varying heterogeneous mantle sources. The higher radiogenic Pb and Sr isotopes and lower 143Nd/144Nd ratios of the older volcanic rocks from Greenwich and Livingston islands compared to younger rocks can be explained by the significant influence of enriched previously metasomatized mantle material rather than fluids or sediment melts from the subducting slab. In contrast, the geochemical nature of the youngest King George Island volcanic rocks suggests a relatively large contribution of a slab-derived fluid component to the magma generation, but a minor role of the enriched component.

Shetland

Lithophile

Trace element

Primitive mantle

10.2343/geochemj.42.207

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Citations (12)

Upper mantle seismic anisotropy beneath the Northern Transantarctic Mountains inferred from peridotite xenoliths near Mt. Melbourne, northern Victoria Land, Antarctica

Journal of Structural Geology (2020)

Daeyeong Kim Munjae Park Yongcheol Park Chao Qi Hwayoung Kim

Peridotite

Seismic anisotropy

Xenolith

10.1016/j.jsg.2020.104237

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Citations (2)