A5100319335- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Planetary Science and Exploration
- Magnetic and Electromagnetic Effects
- Primate Behavior and Ecology
- Astro and Planetary Science
- Animal Behavior and Reproduction
- Geological and Geochemical Analysis
- Animal Vocal Communication and Behavior
- Magnetic Properties of Alloys
- Geological formations and processes
- Evolution and Paleontology Studies
- High-pressure geophysics and materials
- Paleontology and Evolutionary Biology
- Geological and Geophysical Studies
- Space Science and Extraterrestrial Life
- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Pleistocene-Era Hominins and Archaeology
- Geophysical and Geoelectrical Methods
- Isotope Analysis in Ecology
- Nonlinear Photonic Systems
- Arsenic contamination and mitigation
Chinese Academy of Sciences
2016-2025
Qingdao National Laboratory for Marine Science and Technology
2017-2025
Institute of Geology and Geophysics
2016-2025
University of Chinese Academy of Sciences
2009-2025
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2022-2025
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2022-2025
University of Science and Technology Beijing
2024-2025
Anhui University
2014-2024
Hefei Normal University
2016-2024
Yantai Institute of Coastal Zone Research
2024
Abstract The Moon has a magmatic and thermal history that is distinct from of the terrestrial planets 1 . Radioisotope dating lunar samples suggests most basaltic magmatism ceased by around 2.9–2.8 billion years ago (Ga) 2,3 , although younger basalts between 3 Ga have been suggested crater-counting chronology, which large uncertainties owing to lack returned for calibration 4,5 Here we report precise lead–lead age 2,030 ± 4 million basalt clasts Chang’e-5 mission, 238 U/ 204 Pb ratio ( µ...
Significance Cyanobacteria are known to promote the precipitation of Ca-carbonate minerals by photosynthetic uptake inorganic carbon. This process has resulted in formation carbonate deposits and a fossil record importance for deciphering evolution cyanobacteria their impact on global carbon cycle. Though mechanisms cyanobacterial calcification remain poorly understood, this is invariably thought as extracellular indirect by-product metabolic activity. Here, we show that contrary common...
Abstract The term “pseudo‐single domain” (PSD) has been used to describe the transitional state in rock magnetism that spans particle size range between single domain (SD) and multidomain (MD) states. for stable SD most commonly occurring terrestrial magnetic mineral, magnetite, is so narrow (~20–75 nm) it widely considered much of paleomagnetic record interest carried by PSD rather than particles. concept has, thus, become dominant explanation magnetization associated with a major fraction...
Abstract The past two decades of lunar exploration have seen the detection substantial quantities water on Moon’s surface. It has been proposed that a hydrated layer exists at depth in soils, buffering cycle Moon globally. However, reservoir yet to be identified for this layer. Here we report abundance, hydrogen isotope composition and core-to-rim variations measured impact glass beads extracted from soils returned by Chang’e-5 mission. preserve hydration signatures display abundance...
<p>The Chang’e-5 (CE-5) mission, the first return of lunar samples to Earth since Apollo and Luna missions more than 44 years ago, landed on one youngest mare basalt units (1.0-3.0 Ga, based superposed crater counts), located at middle latitude (~43°N) far from previous landing sites. On December 17, 2020, sample capsule returned with 1731 grams soil collected upper few centimeters surface an ~1 meter-long core drilled into regolith. This paper summarizes main discoveries CE-5...
The evolution of the lunar magnetic field can reveal Moon’s interior structure, thermal history, and surface environment. mid-to-late-stage is poorly constrained, thus, existence a long-lived dynamo remains controversial. Chang’e-5 mission returned heretofore youngest mare basalts from Oceanus Procellarum uniquely positioned at midlatitude. We recovered weak paleointensities ~2 to 4 microtesla basalt clasts 2 billion years ago, attesting longevity until least midstage. This paleomagnetic...
Methanotrophs play an important role in controlling methane balance the biosphere. For over 100 years, methanotrophs of Proteobacteria phylum have been studied under oxic conditions, with molecular oxygen serving as major electron acceptor. However, recent metagenomic data suggest that proteobacterial may be more metabolically versatile. In this work, we demonstrate methane-dependent ferrihydrite reduction by a methanotroph Methylomonas genus (Gammaproteobacteria) well Methylosinus...
It has recently become clear that several human lineages coexisted with Homo sapiens during the late Middle and Late Pleistocene. Here, we report an archaic fossil throws new light on debates concerning diversification of genus origin H. sapiens. The was recovered in Harbin city northeastern China, a minimum uranium-series age 146 ka. This cranium is one best preserved Pleistocene fossils. Its massive size, large cranial capacity (∼1,420 mL) falling range modern humans, combined mosaic...
Abstract Micrometeorite impacts and solar wind irradiation, the dominant space weathering (SW) processes, largely modified compositions microtexture of soil materials on Moon. Here, we report SW characteristics Chang'e‐5 lunar soils from mid‐high latitude (43.06°N). All mineral phases exposed surface a single basalt clast have vapor deposit layer, whereas textures irradiation‐damaged zone are dependent host species. Nanophase Fe (npFe 0 ) particles spherical in amorphized pyroxenes,...
The chemical transformations of methane (CH
The Chinese spacecraft Chang'e-5 (CE-5) landed on the northern Ocean Procellarum and returned 1,731 grams of regolith. CE-5 regolith is composed mostly fragments basalt, impact glass, agglutinates, mineral fragments. basalts could be classified as a low-Ti highly fractionated type based their TiO2 content ∼5.3 wt% Mg# ∼28. Independent petrographic texture, have uniform eruption age 2,030 ± 4 Ma, demonstrating that Moon remained volcanically active until at least ∼2.0 Ga. Although landing...
Single‐domain magnetite particles produced by magnetotactic bacteria (MTB) and aligned in chains, called magnetosomes, are potentially important recorders of paleomagnetic, paleoenvironmental paleolife signals. Rock magnetic properties related to the anisotropy magnetosome chains have been widely used identify fossilized magnetosomes (magnetofossils) preserved geological materials. However, ambiguities exist when linking chain structure because complexity integrity magnetostatic interactions...
Abstract We present results for a series of hysteresis measurements that provide information about remanent, induced, transient‐free, and transient magnetization components. These measurements, differences between measurement types, enable production six types first‐order reversal curve (FORC)‐like diagrams which only double the number involved in conventional FORC measurement. can be used to distinguish magnetic signatures associated with each domain state. When analyzing samples complex...
Abstract Magnetic mineral inclusions occur commonly within other larger phases in igneous rocks and have been demonstrated to preserve important paleomagnetic signals. While the usefulness of magnetic has explored extensively, their presence sediments only speculated upon. The contribution magnetization sediments, therefore, elusive. In this study, we use transmission electron microscope (TEM) methods demonstrate widespread preservation silicate‐hosted marine sedimentary settings. TEM...
Microbialites are organo-sedimentary rocks found in abundance throughout the geological record back to ~3.5 Ga. Interpretations of biological and environmental conditions under which they formed rely on comparisons with modern microbialites. Therefore, a better characterization diverse microbialites is crucial improve such interpretations. Here, we studied from three Mexican alkaline crater lakes: Quechulac, La Preciosa Atexcac. The geochemical analyses water solutions showed that were...
New samples returned by China Chang'e-5 (CE-5) mission offer an opportunity for studying the lunar geologic longevity, space weathering, and regolith evolution. The age determination of CE-5 was among first scientific questions to be answered. However, precious samples, most in micrometer size range, challenge many traditional analyses on large single crystals zircon developed massive bulk samples. Here, we a non-destructive rapid screening individual zirconium-containing particle isotope...
Dissimilatory iron-reducing bacteria (DIRB) oxidize organic matter or hydrogen and reduce ferric iron to form Fe(II)-bearing minerals, such as magnetite siderite. However, compared with magnetite, which was extensively studied, the mineralization process mechanisms of siderite remain unclear. Here, combination advanced electron microscopy synchrotron-based scanning transmission X-ray (STXM) approaches, we studied in detail morphological, structural, chemical features biogenic via a growth...
Stable single-domain (SD) magnetite formed intracellularly by magnetotactic bacteria is of fundamental interest in sedimentary and environmental magnetism. In this study, we studied the time course magnetosome growth chain formation (0–96 hr) Magnetospirillum magneticum AMB-1 transmission electron microscopy (TEM) observation rock The initial non-magnetic cells were microaerobically batch cultured at 26 °C a modified magnetic spirillum medium. TEM observations indicated that between 20 24 hr...
ABSTRACT Magnetotactic bacteria (MTB) in the phylum Nitrospirae synthesize up to hundreds of intracellular bullet-shaped magnetite magnetosomes. In present study, a watermelon-shaped magnetotactic bacterium (designated MWB-1) from Lake Beihai Beijing, China, was characterized. This uncultivated microbe identified as member and represents novel phylogenetic lineage with ≥6% 16S rRNA gene sequence divergence all currently described MTB. MWB-1 contained 200 300 magnetosomes showed helical...