A5078026479- Geology and Paleoclimatology Research
- Coral and Marine Ecosystems Studies
- Geological and Geophysical Studies
- Geochemistry and Elemental Analysis
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- Methane Hydrates and Related Phenomena
- Paleontology and Stratigraphy of Fossils
- earthquake and tectonic studies
- Marine and fisheries research
- Radioactive element chemistry and processing
- Groundwater and Isotope Geochemistry
- Marine and coastal ecosystems
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Geological formations and processes
- Ocean Acidification Effects and Responses
- Oceanographic and Atmospheric Processes
- Marine and coastal plant biology
- Marine animal studies overview
- Hydrocarbon exploration and reservoir analysis
- Heavy metals in environment
- Geomagnetism and Paleomagnetism Studies
- Pacific and Southeast Asian Studies
- Marine Bivalve and Aquaculture Studies
Guangzhou Institute of Geochemistry
2016-2025
Chinese Academy of Sciences
2016-2025
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2019-2024
University of Chinese Academy of Sciences
2022-2024
Huawei Technologies (China)
2023
State Key Laboratory of Isotope Geochemistry
2023
Australian National University
2007-2009
Huazhong University of Science and Technology
2008
Union Hospital
2008
National Taiwan University
2000-2006
The Sr/Ca ratio of coral aragonite is used to reconstruct past sea surface temperature (SST). Twenty‐one laboratories took part in an interlaboratory study measurements. Results show bias can be significant, and the extreme case could result a range SST estimates 7°C. However, most data fall within narrower Porites reference material JCp‐1 now characterized well enough have certified value 8.838 mmol/mol with expanded uncertainty 0.089 following International Association Geoanalysts (IAG)...
The chemical index of alteration (CIA) and elemental ratios that are sensitive to weathering, such as Ca/Ti, Na/Ti, Al/Ti, Al/Na, Al/K, La/Sm, were analyzed for detrital sediments at Ocean Drilling Program Site 1148 from the northern South China Sea reveal information weathering in source regions during early Miocene. High CIA values ∼80, coupled with high Al/Ti Al/Na low Na/Ti observed ∼23 Ma, indicating a intensity north region, i.e., south China. This was followed by gradual decreases...
Rare Earth Elements (REE) are essential to modern society but the origins of many large REE deposits remain unclear. The U-Th-Pb ages, chemical compositions and C, O Mg isotopic Bayan Obo, world's largest deposit, indicate a protracted mineralisation history with unusual features. Coexisting calcite dolomite in isotope disequilibrium; some calcitic carbonatite samples show highly varied δ26Mg which increases increasing Si Mg; ankerite crystals decreases Fe from rim centre, patterns. These...
The double‐spike method with multi‐collector inductively coupled plasma‐mass spectrometry was used to measure the Mo mass fractions and isotopic compositions of a set geological reference materials including mineral molybdenite, seawater, coral, as well igneous sedimentary rocks. long‐term reproducibility measurements, based on two‐year analyses NIST SRM 3134 solutions seawater samples, ≤ 0.07‰ (two standard deviations, 2 s , n = 167) for δ 98/95 Mo. Accuracy evaluated by Atlantic which...
Abstract Nine cruises were conducted on a seasonal basis from 2013 to 2015 investigate the spatial distribution and variability of δ 13 C 15 N in particulate organic matter (POM), its response flooding Pearl River Estuary (PRE), south China. Our study reveals highly variable isotope ratios between seasons this subtropical estuary, following climatic hydrological cycles. Wet had more isotopically depleted values, indicating dominance terrestrial freshwater algae POM, whereas contribution...
In this study, a high-precision secondary ion mass spectrometry (SIMS) zircon oxygen isotope ratio analytical protocol is described. The analysis conducted using Cameca IMS 1280-HR at the SIMS Laboratory of Guangzhou Institute Geochemistry, Chinese Academy Sciences (GIGCAS). Four reference zircons (91,500, Qinghu, TEMORA 2 and Penglai) have been chosen to evaluate reproducibility (precision) accuracy. An identical used for analyses, with unchanged instrumental parameters beam intensities...
A method with simplified chemical treatment has developed to determine high-precision δ11B in silicate rocks by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) using sample-standard-bracketing (SSB) mode. Boron was extracted digesting HF, and purified a single ion-exchange chromatographic step through column filled AG MP anion resin. Only one dryness process involved the entire procedure. This procedure diminishes risk of boron contamination losses during treatment....
Abstract Nitrate (NO 3 − ) concentrations and the isotopic composition (δ 15 N δ 18 O) of water samples from Pearl River Estuary (PRE), south China, were measured to constrain sources processing in springtime. decreased at higher salinities, dual values correlated with 1/[NO ], both which suggest mixing eutrophic freshwater oligotrophic seawater. However, O did not closely follow expected lines. At low salinities (0–3.0), some exhibited high compared those riverine end‐member, indicating...
Paleoclimate research has built a framework for Earth's climate changes over the past 65 million years or even longer. However, our knowledge of weather-timescale extreme events (WEEs, also named paleoweather), which usually occur several days hours, under different regimes is almost blank because current paleoclimatic records rarely provide information with temporal resolution shorter than monthly scale. Here we show that giant clam shells (