Results 21 to 30 of about 5,782,796 (306)

Nickel isotopic evidence for late-stage accretion of Mercury-like differentiated planetary embryos

open access: yesNature Communications, 2021
Based on Nickel isotope analysis of meteorites and terrestrial rocks, the authors suggest that the Bulk Silicate Earth has a sub-chondritic Nickel isotope composition.
Shui-Jiong Wang   +11 more
doaj   +1 more source

High-precision and high-accuracy magnesium isotope analysis on multiple-collector inductively coupled plasma mass spectrometry using a critical mixture double spike technique

open access: yesSolid Earth Sciences, 2022
A new procedure has been developed for high precision and high accuracy Mg isotope analysis on multiple-collector inductively coupled plasma mass spectrometry using a critical mixture double spike technique.
Yongsheng He   +6 more
doaj   +1 more source

A Deep-Penetrating Geochemical Prospecting Experiment of Mahuagou Gold Deposit in the Core of the Huangling Anticline, Western Hubei, China

open access: yesApplied Sciences, 2023
The Mahuagou gold deposit is among the most important gold deposits in the core of the Huangling Anticline. However, the geochemical exploration on the surface of the mining area presents challenges due to the thin overburden.
Weihang Zhou   +9 more
doaj   +1 more source

Determination of 42 Trace Elements in Silicate Glass Reference Materials by High Spatial Resolution LA-ICP-MS

open access: yesYankuang ceshi, 2023
BACKGROUNDCritical metal elements are a group of metal elements including rare metal elements (e.g., Li, Be, Rb, Cs, Nb, Ta, Zr, Hf, W), rare earth elements (REEs), rare disperse elements (e.g., Ga, Ge, Se, Cd, In, Te, Re, Tl) and rare precious elements (
Tao HE   +7 more
doaj   +1 more source

Distribution characteristics and influencing factors of iron-rich groundwater in Xining City

open access: yesShuiwen dizhi gongcheng dizhi
Groundwater is an important water supply source in Xining City. Previous works have found that iron-rich groundwater limits water development and utilization.
Chunyan LIU   +11 more
doaj   +1 more source

Genesis of Hawaiian lavas by crystallization of picritic magma in the deep mantle

open access: yesNature Communications, 2023
Here the authors demonstrate that Hawaiian lavas are formed by partial melting of mantle peridotite with subsequent fractionation of clinopyroxene and garnet in the deep magma chamber (90 km) and reequilibration with harzburgite at a shallower depth (
Junlong Yang   +3 more
doaj   +1 more source

Geoscience in the courtroom : a cross-disciplinary seminar on the effective and appropriate use of geological science in litigation [PDF]

open access: yes, 1994
Sponsored by Austin Geological Society and Travis County Bar Association and endorsed by Environmental Law Section, State Bar of Texas. "Short Course No.3, 44th Annual Meeting, Gulf Coast Association of Geological Societies, Austin, Texas, October 8,
Austin Geological Society (Texas)   +4 more
core   +1 more source

Lithological Mapping Based on Fully Convolutional Network and Multi-Source Geological Data

open access: yesRemote Sensing, 2021
Deep learning algorithms have found numerous applications in the field of geological mapping to assist in mineral exploration and benefit from capabilities such as high-dimensional feature learning and processing through multi-layer networks.
Ziye Wang, Renguang Zuo, Hao Liu
doaj   +1 more source

Metabolism Regimes in Regulated Rivers of the Illinois River Basin, USA

open access: yesScientific Data
Metabolism estimates organic carbon accumulation by primary productivity and removal by respiration. In rivers it is relevant to assessing trophic status and threats to river health such as hypoxia as well as greenhouse gas fluxes.
Judson W. Harvey   +2 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

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