Dimers based on the α + α potential and chain states of carbon isotopes

1997 ◽  
Vol 357 (4) ◽  
pp. 355-365 ◽  
Author(s):  
W. von Oertzen
Keyword(s):  
Carbon Isotopes

Carbon isotopes in Sphagnum from Kyushu, Japan, and their relationship with local climate

2015 ◽  
Vol 49 (5) ◽  
pp. 495-502 ◽  
Author(s):  
Saki Yasuda ◽  
Seigo Ooki ◽  
Hiroshi Naraoka ◽  
Tasuku Akagi
Keyword(s):  
Carbon Isotopes ◽  
Local Climate

THERMAL ALTERATION OF PRECAMBRIAN MICROFOSSILS: APPLICATIONS TO THE STUDY OF STABLE CARBON ISOTOPES ON THE EARLY EARTH

2020 ◽  
Author(s):  
Jeffrey Osterhout ◽  
◽  
J. William Schopf ◽  
Anatoliy B. Kudryavtsev ◽  
K.D. McKeegan
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Early Earth ◽  
Stable Carbon ◽  
Thermal Alteration

Reconstructing Terrestrial Environments Using Stable Isotopes in Fossil Teeth and Paleosol Carbonates

2012 ◽  
Vol 18 ◽  
pp. 167-194 ◽  
Author(s):  
Benjamin H. Passey
Keyword(s):  
Isotopic Composition ◽  
Soil Temperature ◽  
Carbon Isotopes ◽  
Oxygen Isotopes ◽  
Precipitation Amount ◽  
Radiative Heating ◽  
Mammal Species ◽  
Isotopic Compositions ◽  
Heat Effects ◽  
Oxygen Isotopic

Carbon isotopes in Neogene-age fossil teeth and paleosol carbonates are commonly interpreted in the context of past distributions of C3 and C4 vegetation. These two plant types have very different distributions in relation to climate and ecology, and provide a robust basis for reconstructing terrestrial paleoclimates and paleoenvironments during the Neogene. Carbon isotopes in pre-Neogene fossil teeth are usually interpreted in the context of changes in the δ13C value of atmospheric CO2, and variable climate-dependent carbon-isotope discrimination in C3 plants. Carbon isotopes in pre-Neogene soil carbonates can be used to estimate past levels of atmospheric CO2. Oxygen isotopes in fossil teeth and paleosol carbonates primarily are influenced by the oxygen isotopic compositions of ancient rainfall and surface waters. The oxygen isotopic composition of rainfall is has a complex, but tractable, relationship with climate, and variably relates to temperature, elevation, precipitation amount, and other factors. Mammal species that rely on moisture in dietary plant tissues to satisfy their water requirements (rather than surface drinking water) may have oxygen isotopic compositions that track aridity. Thus, oxygen isotopes of fossil mammals can place broad constraints on paleoaridity. Carbonate clumped isotope thermometry allows for reconstruction of soil temperatures at the time of pedogenic carbonate mineralization. The method is unique because it is the only thermodynamically based isotopic paleothermometer that does not require assumptions about the isotopic composition of the fluid in which the archive mineral formed. Soil temperature reflects a complex interplay of air temperature, solar radiative heating, latent heat effects, soil thermal diffusivity, and seasonal variations of these parameters. Because plants and most animals live in and/or near the soil, soil temperature is an important aspect of terrestrial (paleo)climate.

Anachronistic facies and carbon isotopes during the end-Permian biocrisis: Evidence from the mid-Tethys (Kisejin, Iran)

2019 ◽  
Vol 516 ◽  
pp. 364-383 ◽  
Author(s):  
Mahdi Maaleki-Moghadam ◽  
Behrouz Rafiei ◽  
Sylvain Richoz ◽  
Adam D. Woods ◽  
Leopold Krystyn
Keyword(s):  
Carbon Isotopes ◽  
Anachronistic Facies

Carbonization of Carbonates and Fractionation of Stable Carbon Isotopes in a Dynamic Slip Zone

2020 ◽  
Vol 58 (9) ◽  
pp. 981-993
Author(s):  
Yu. A. Morozov ◽  
V. S. Sevastianov ◽  
A. Yu. Yurchenko ◽  
O. V. Kuznetsova
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Slip Zone ◽  
Stable Carbon ◽  
Dynamic Slip

Using Stable Carbon Isotopes to Distinguish Wild from Captive Wolves

2011 ◽  
Vol 18 (3) ◽  
pp. 253-264 ◽  
Author(s):  
Roland Kays ◽  
Robert S. Feranec
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Stable Carbon

Analysis of carbon isotopes in airborne carbonate and implications for aeolian sources

2004 ◽  
Vol 49 (15) ◽  
pp. 1637-1641
Author(s):  
Junji Cao ◽  
Yaqiang Wang ◽  
Xiaoye Zhang ◽  
Shuncheng Lee ◽  
Kinfai Ho ◽  
...  
Keyword(s):  
Carbon Isotopes
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