Results 21 to 30 of about 13,651 (294)

Evaluation of oxygen isotopes and trace elements in planktonic foraminifera from the Mediterranean Sea as recorders of seawater oxygen isotopes and salinity [PDF]

open access: yesClimate of the Past, 2020
The Mediterranean Sea is characterized by a relatively strong west to east salinity gradient, which makes it an area suitable for testing the effect of salinity on foraminiferal shell geochemistry.
L. K. Dämmer   +5 more
doaj   +1 more source

Estimation of Surface and Groundwater Interaction by Stable Isotopic Techniques – A Case Study of Chengalpattu District, OMR Region [PDF]

open access: yesNature Environment and Pollution Technology
Isotopes are atoms of an element having the same atomic number but different mass numbers. Isotopes in hydrology and water resources are used for identifying its occurrence, movement, residence times, recharge, and discharge process.
Surendar Natarajan
doaj   +1 more source

Oxygen and hydrogen isotopes measured on water bottle samples during KNORR cruise KNR199-4 [PDF]

open access: yes, 2015
Oxygen and hydrogen isotopes measured on water bottle samples during KNORR cruise KNR199-
Waniek, Joanna J   +13 more
core   +1 more source

Oxygen isotopes of waters from the Coorong Lagoon, South Australia, from 2016-2018

open access: yes, 2021
To assess the fractionation of oxygen isotopes into the bivalve species Arthritica helmsi, live bivalve shells were collected alongside the waters in which they inhabit.
Gillanders, Bronwyn M   +2 more
core   +1 more source

The Reaction between Oxygen and the Heavier Isotope of Hydrogen [PDF]

open access: yesNature, 1934
WE have made a preliminary survey of the principal respects in which the reaction of deuterium with oxygen differs from that of ordinary hydrogen. The deuterium was prepared by the nearly quantitative decomposition of 97 per cent deuterium oxide by repeated passage over pure iron.
C. N. HINSHELWOOD   +2 more
openaire   +2 more sources

Oxygen Isotopes and Volatiles in Martian Meteorite [PDF]

open access: yes, 2013
Oxygen isotopes were measured in mineral separates from martian meteorites using laser fluorination and were found to be remarkably uniform in both δ18O and Δ17O, suggesting that martian magmas did not assimilate aqueously altered crust regardless of any
Channon, Melanie Beth
core   +1 more source

Hydrochemical Property and Hydrogen and Oxygen Isotopes in the Bayin River Basin

open access: yesGuan'gai paishui xuebao, 2022
【Objective】 The Bayin river basin is located in Qinghai province; the physical and chemical properties of its water vary with many factors. In this paper, we analyze the hydro-chemical properties and hydrogen and oxygen isotopes in different reaches of ...
ZHAI Jingya, JIN Yanxiang, JIN Xin
doaj   +1 more source

The Current Oxygen and Hydrogen Isotopic Status of Lake Baikal [PDF]

open access: yesWater, 2021
This study revises the δ18O and δ2H status of Lake Baikal. The mean values of δ18O and δ2H varied from −15.9 to −15.5‰ and from −123.2 to 122.2‰, respectively, for the past 30 yr. The isotopic composition of the lake remained more ‘‘light” compared to the regional precipitation and rivers inflows.
Andrey Fedotov   +5 more
openaire   +1 more source

Water isotopic and hydrochemical characteristics and causality in Tajikistan

open access: yesShui kexue jinzhan, 2013
Main ions and hydrogen,oxygen isotopes were measured in samples of lake water,river water and spring water,which were collected from various locations of the Tajikistan region during the period from September through October 2011.The spatially ...
CENG Haiao, WU Jinglu
doaj   +1 more source

Paradoxically lowered oxygen isotopes of hydrothermally altered minerals by an evolved magmatic water

open access: yesScientific Reports, 2022
It has been well known that the influxing meteoric water can hydrothermally lower oxygen and hydrogen isotopes of rocks and/or minerals during continental magmatic or metamorphic processes in certain appropriate cases.
Chun-Sheng Wei, Zi-Fu Zhao
doaj   +1 more source

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