Article
Geochemistry & Geophysics
Lara B. Owens, Philip R. Kyle, Zachary D. Sharp, Andrew Campbell
Summary: The unique location of Mount Erebus in Antarctica provides an opportunity to investigate factors contributing to changes in oxygen isotope compositions, such as water-rock interaction and assimilation of crustal materials. The anomalous trend of decreasing delta O-18 with magmatic evolution suggests a complex process involving isotopic depletion of the melt over time. The study highlights the importance of differential fractionation of olivine and feldspar from their respective melts in understanding the oxygen isotope variations in volcanic systems.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Multidisciplinary Sciences
Tomoya Obase, Hirochika Sumino, Kotaro Toyama, Kaori Kawana, Kohei Yamane, Muga Yaguchi, Akihiko Terada, Takeshi Ohba
Summary: By repeatedly measuring the isotopic compositions of volcanic gases sampled at fumaroles around the Kusatsu-Shirane volcano in Japan, we have found synchronous increases in He-3/He-4 ratios in some fumaroles, suggesting an increase in magmatic gas supply since 2018. Temporal variations in He-3/CO2 ratios and carbon isotopic ratios of CO2 also support this increase in magmatic gas supply.
SCIENTIFIC REPORTS
(2022)
Article
Food Science & Technology
Adriana Dehelean, Ioana Feher, Puscas Romulus, Dana Alina Magdas, Florina-Dorina Covaciu, Angela Maria Kasza, Victor Curean, Gabriela Cristea, Yi Chen
Summary: Pigs are a significant source of meat globally, and consumers prioritize health considerations when choosing pork products. By analyzing isotopic fingerprints and using chemometric methods, the geographical origin of pork samples can be classified. The results indicate that the metal concentrations in pork do not pose a carcinogenic risk.
Article
Geochemistry & Geophysics
Panpan Xie, Shifeng Dai, James C. Hower, Victor P. Nechaev, David French, Ian T. Graham, Xibo Wang, Lei Zhao, Jianping Zuo
Summary: Coals containing ammonium-bearing aluminosilicates are rich in critical elements. The nitrogen in these minerals likely originates from the decomposition of organic matter in coals under increased geothermal gradient from intrusions or hydrothermal fluids. The isotopic composition of nitrogen in the minerals and coals provides valuable insights into their formation and sources of critical elements.
Article
Geography, Physical
Yohan Pochat-Cottilloux, Jeremy E. Martin, Mathieu G. Faure-Brac, Stephane Jouve, Christian de Muizon, Jorge Cubo, Christophe Lecuyer, Francois Fourel, Romain Amiot
Summary: Using a multi-isotopic approach, this study inferred the paleoecological traits of a Sebecid crocodylomorph from the Tiupampa locality in Bolivia. The results support a terrestrial lifestyle for the Sebecid, as indicated by the oxygen isotope compositions in its body and the differences in oxygen isotope compositions between it and aquatic crocodylomorphs. The calcium and carbon isotope compositions suggest that the Sebecids from Tiupampa occupied the top of a C3-based food web, and the oxygen and carbon isotope compositions of their hard tissues indicate a local dry environment with tropical temperatures.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Alok Kumar, Jyotiranjan S. Ray, P. E. Binusarma, N. Awasthi, Bivin G. George, M. G. Yadava, Rajneesh Bhutani, S. Balakrishnan, Kanchan Pande
Summary: Mud volcanoes at convergent margins serve as pathways for ejecting clay minerals and fluids originating deep within forearcs, providing insight into shallow level processes in subduction zones. Detailed mineralogical, geochemical, and isotopic studies reveal that the mud breccia contains materials derived from altered oceanic crust and terrigenous sediment, with the former contributing the majority of the composition.
Article
Geology
Chengming Wang, Yuejun Wang, Yuzhi Zhang, Xin Qian, Yi Zheng, Qiyu Gou
Summary: The Chang'an gold deposit located in the Ailaoshan-Red River tectonic zone in southern China exhibits similarities to Carlin-type gold deposits in Nevada and the Dian-Qian-Gui Golden Triangle. The mineralization is controlled by lithology and structure, with gold mainly bound in arsenopyrite and pyrite, and occurs as milky quartz veins and disseminated gold-bearing sulfides. The deposit is distinct from typical orogenic-type gold deposits in terms of host rock relationships, alteration features, and ore-forming fluid characteristics.
ORE GEOLOGY REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Mengyue Zhai, Shengyi Mao, Lihua Liu, Xueping Chen, Minggang Cai, Xiaowei Zhu, Daidai Wu, Huaichun Wu
Summary: The Shin-Yan-Ny-Hu (SYNH) mud volcanoes in southwestern Taiwan are considered as typical subaerial mud volcanoes. The study investigated the lipid biomarkers and their stable carbon isotopes to understand the sources, depositional environments, thermal maturity, probable source strata, and migration framework of the volcanic fluid. The organic matter in the active SYNH mud volcanoes primarily originated from petroleum derivatives, bacteria, and terrigenous C3 plants. The results suggest a marine deltaic sedimentary environment with oxic conditions for the deposition of organic matter.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
J. R. Brown, G. F. Cooper, G. M. Nowell, C. G. Macpherson, I. Neill, J. Prytulak
Summary: The study of Martinique volcanic arc lavas reveals evidence of sediment assimilation in shallow crustal levels, leading to a wider range of Sr isotopic compositions in the magmas. This highlights the importance of constraining crustal contributions before using lava geochemistry to study sediment and volatile recycling at subduction zones and assessing potential heterogeneity of arc mantle sources.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Hsin-Chieh Pu, Cheng-Horng Lin, Hsiao-Fen Lee, Ya-Chuan Lai, Li-Chin Chang, Min-Hung Shih
Summary: By examining earthquake focal mechanisms and geochemical composition, researchers identified a series of similar variations in observations, suggesting a possible link between ascending volcanic fluids and surface volcanism. These spatiotemporal variations in faulting behaviors provide a valuable warning of potential surface volcanic activity.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Microbiology
Ho-Chuan Hsu, Jung-Sheng Chen, Viji Nagarajan, Bashir Hussain, Shih-Wei Huang, Jagat Rathod, Bing-Mu Hsu
Summary: The microbial communities in mud volcanoes are important for the global methane cycle. This study focused on the temporal effects of volcanic eruptions on bacterial diversity and functions in southern Taiwan. The results showed significant changes in community composition and predicted functions over time, influenced by both environmental factors and microbial interactions.
Article
Multidisciplinary Sciences
Joshua H. Miller, Daniel C. Fisher, Brooke E. Crowley, Ross Secord, Bledar A. Konomi
Summary: Under harsh Pleistocene climates, migration and seasonally patterned landscape use were critical for reproductive success of mastodons and other megafauna. Using isotopic analysis of a mastodon tusk, researchers found that the geographic ranges and mobility of the mastodon changed as it matured, with an increase in movement and the development of seasonal landscape use. The mastodon's death in northeast Indiana suggests that this area may have been important for mating and had regional significance for late Pleistocene mastodons.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Anthropology
Crista Adelle Wathen, Sven Isaksson, Kerstin Liden
Summary: The application of strontium isotopic and concentration results in archeological skeletons has proven to be valuable in studying human and animal mobility patterns, as well as dietary life history. However, there is still a concern regarding whether the obtained isotopic and concentration values represent individual accumulation during life or if they are influenced by analytical artifacts, diagenetic material, or other forms of contamination. This review discusses the development of pretreatment protocols, the impact of technological advancements on producing accurate and precise results, and the importance of best practices. Archeological case studies are presented to demonstrate the progress made in these areas as well as their limitations and potential.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2022)
Article
Geochemistry & Geophysics
Tian Lan, Yuchao Fan, Jilong Lu, Libo Hao, Xinyun Zhao, Xiaohan Sun, Jinke Guo, Yaru Hou
Summary: This study investigates the ore-forming fluids of the Dayingezhuang gold deposit using trace elements of pyrite and C-O-S isotopic data. The results suggest that the ore-forming fluids are metamorphic fluids with the addition of sedimentary materials, possibly derived from the mantle lithosphere influenced by the subducted Paleo-Pacific Plate and its overlying marine sediments.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Environmental Sciences
Viji Nagarajan, Hsin-Chi Tsai, Jung-Sheng Chen, Suprokash Koner, Rajendran Senthil Kumar, Hung -Chun Chao, Bing -Mu Hsu
Summary: This study comprehensively analyzed the distribution of minerals, microbial diversity, abundance, and metabolic potential in major mud volcanic groups in Taiwan, expanding our knowledge of prokaryotes in these terrestrial environments.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biochemical Research Methods
Hou-Chun Liu, Chuan-Hsiung Chung, Chen-Feng You, Yi-Hsuan Chiang
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2016)
Article
Engineering, Environmental
Cheng-Ta Chang, Chen-Feng You, Suresh Kumar Aggarwal, Chuan-Hsiung Chung, Hung-Chun Chao, Hou-Chun Liu
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2016)
Article
Geochemistry & Geophysics
Hung-Chun Chao, Chen-Feng You, Hou-Chun Liu, Chuan-Hsiung Chung
GEOCHIMICA ET COSMOCHIMICA ACTA
(2015)
Article
Chemistry, Applied
Hou-Chun Liu, Chen-Feng You, Chiou-Yun Chen, Yu-Ching Liu, Ming-Tsung Chung
Article
Chemistry, Analytical
Tzu-Hao Wang, Chen-Feng You, Chuan-Hsiung Chung, Hou-Chun Liu, Yen-Po Lin
MICROCHEMICAL JOURNAL
(2020)
Article
Engineering, Electrical & Electronic
Chang-Chun Lee, Kuo-Shu Kao, Hou-Chun Liu, Chia-Ping Hsieh, Tao-Chih Chang
Summary: To address the issue of sequential reliability in three-dimensional integrated circuit (3D-IC) packaging, this study proposes a double-layered, thin stacked chip package subjected to temperature cycling load. Nonlinear material/geometry finite element analysis is used to examine the impact of important design factors, such as underfill elastic modulus, chip thickness, and through silicon via (TSV) radius and pitch, on the fatigue lifespan of SnAg microsolder joints. The simulation results indicate that the best fatigue lifetime can be achieved with certain chip thickness, TSV pitch, and radius.
JOURNAL OF ELECTRONIC PACKAGING
(2022)
Article
Engineering, Electrical & Electronic
Chang-Chun Lee, Yu-Min Lin, Hou-Chun Liu, Ji-Yuan Syu, Yuan-Cheng Huang, Tao-Chih Chang
Summary: The study explores the influence of thermomechanical residual stress on the reliability of thermal cycling test (TCT) in the manufacturing process of 3D-IC packaging, and establishes a nonlinear simulation methodology to investigate the coupling effect of the manufacturing process and the TCT. The plastic and creep behaviors of the solder microbump are considered in the finite element modeling, with parametric analysis of geometric dimensions and underfill materials. It is found that residual strain in the manufacturing process causes packaging warpage and converges at the subsequent TCT stage, while considering the creep model is crucial to understanding the behavior of the solder microbump during thermal cycling.
MICROELECTRONIC ENGINEERING
(2021)
Article
Engineering, Civil
Hung-Chun Chao, Ju-Lien Pi, Chen-Feng You, Ying-Tzung Shieh, Hsueh-Yu Lu, Kuo-Fang Huang, Hou-Chun Liu, Chuan-Hsiung Chung
Summary: The Tatun Volcanic Group in northeast Taiwan is characterized by fumaroles and acid hot springs, indicating underlying magma activities. By combining regional geology, multi-isotopes, and volatiles, this study provided solid geochemical evidence for constraining the sources of chemicals in the hydrothermal system. Different types of water in the hot springs were identified, helping to distinguish between primary and secondary hydrothermal systems. The study also suggested a potential connection between the variations in volatiles and magma activities in the area.
JOURNAL OF HYDROLOGY
(2021)
Article
Geosciences, Multidisciplinary
Hung-Chun Chao, Chen-Feng You, In-Tian Lin, Hou-Chun Liu, Ling-Ho Chung, Chun-Chang Huang, Chuan-Hsiung Chung
Summary: Mud volcano Lei-Gong-Huo (MV LGH) in eastern Taiwan is a unique mud volcano with fluids originating from water-rock interactions of igneous and sedimentary rocks, providing important information on fluid sources and chemical compositions. The spatial distribution of the fluids reveals a mixing behavior between the two sources, with igneous source dominating the eastern and southeastern parts and sedimentary source dominating the western and northwestern parts.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Hou-Chun Liu, Jia-You Hsieh, Yen-Hong Chen, Chen-Feng You, Wei-Teh Jiang, Hsin-Yi Wen
Summary: This study reassessed the adsorption and desorption behaviors of strontium (Sr) on montmorillonite, revealing that adsorption and desorption occurred in various samples, but to different extents. Ion competition of divalent ions, rather than ionic strength, predominantly controlled these phenomena.
ACS EARTH AND SPACE CHEMISTRY
(2022)
Article
Chemistry, Applied
Hye-Bin Choi, Woo-Jin Shin, Hou-Chun Liu, Yan-Hong Chen, Jia-You Hsieh, Kwang-Sik Lee
Summary: This study examined whether stable strontium isotope (88Sr/86Sr) fractionation occurs during nutrient uptake by bean plants. Mung and soy beans were hydroponically cultivated with nutrient solutions of different strontium isotope compositions. The results showed that bean sprout organs exhibited significant deviation from the expected mixing lines, indicating fractionation of 688/86Sr. The study also revealed that bean sprouts preferentially uptake lighter strontium isotopes. These findings demonstrate the occurrence of stable strontium isotope fractionation during nutrient uptake by bean plants and highlight the effectiveness of hydroponic experiments in investigating this process.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Geosciences, Multidisciplinary
Hung-Chun Chao, Chen-Feng You, In-Tian Lin, Hsueh-Yu Lu, Hou-Chun Liu, Chuan-Hsiung Chung
Summary: Mud volcano is an important pathway for volatile materials to migrate back to Earth's surface, and the waters expelled by mud pools in the eastern Taiwan's Luo-Shan mud volcano originate from the same regional source, but with slight variations in trace element composition among different mud pools.
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
(2021)
Article
Chemistry, Analytical
Hou-Chun Liu, Yen-Hong Chen, Chen-Feng You, Chuan-Hsiung Chung
Summary: The natural fractionation of stable Sr isotopes has attracted attention as a new tracer, and a novel approach using Zr isotope empirical external normalization (EEN) and Sr-84-Sr-87 double spike (DS) was proposed to improve the analytical accuracy of delta Sr-88/86 determination by MC-ICP-MS.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Geochemistry & Geophysics
Hou-Chun Liu, Chen-Feng You, Houyun Zhou, Kuo-Fang Huang, Chuan-Hsiung Chung, Wei-Jen Huang, Jing Tang
Article
Geochemistry & Geophysics
Tao Li, Fei Liu, Hemmo A. Abels, Chen-Fen You, Zeke Zhang, Jun Chen, Junfeng Ji, Laifeng Li, Le Li, Hou-Chun Liu, Chao Ren, Renyuan Xia, Liang Zhao, Wenfang Zhang, Gaojun Li
EARTH AND PLANETARY SCIENCE LETTERS
(2017)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
