Zobrazeno 1 - 10
of 987
pro vyhledávání: '"Ludvigson A"'
Autor:
L. E. Aguirre Palafox, A. Möller, N. M. McLean, G. A. Ludvigson, C. E. Colombi, I. P. Montañez
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 6, Pp n/a-n/a (2024)
Abstract This study investigates the potential of laser ablation inductively coupled plasma mass spectrometry (LA‐ICP‐MS) U‐Pb dating for carbonate nodules in the Late Triassic Ischigualasto Formation of northwestern Argentina. We establish a f
Externí odkaz:
https://doaj.org/article/9a49a76a2e1d4e68959d3c1e839ab08c
Autor:
Montgomery, Tinika A., Nair, Hari R., Phadke, Manali, Morhardt, Erin, Ludvigson, Adam, Motamedinia, Piruz, Singh, Dinesh, Dahl, Neera K.
Publikováno v:
In Kidney Medicine September 2024 6(9)
Publikováno v:
Geosciences, Vol 14, Iss 5, p 120 (2024)
Stable isotope, trace element, and cathodoluminescence analyses were performed on gastropods and matrix from rock cores of the Middle to Upper McMurray Formation (Lower Cretaceous/Aptian, Northwestern Alberta, Canada) to characterize the extent to wh
Externí odkaz:
https://doaj.org/article/767fc54dcf7d43258ac57be40b74953f
Autor:
Marina B. Suarez, Aisha Al Suwaidi, Elizabeth H. Montgomery, James I. Kirkland, Joe Andrew, Noah Mclean, Andreas Möller, Gregory Ludvigson, Celina A. Suarez
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 9, Pp n/a-n/a (2023)
Abstract The Early Cretaceous is an important time of transition in Earth history, marked by a succession of oceanic anoxic events and carbon cycle perturbations that drove changes on land and in the ocean. The need for more precise geochronologic co
Externí odkaz:
https://doaj.org/article/b8ed2b471f22409bb97d275942b957b1
Publikováno v:
In Palaeogeography, Palaeoclimatology, Palaeoecology 15 June 2023 620
Publikováno v:
American Economic Journal: Macroeconomics, 2021 Oct 01. 13(4), 369-410.
Externí odkaz:
https://www.jstor.org/stable/27087600
Akademický článek
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Publikováno v:
AEA Papers and Proceedings, 2021 May 01. 111, 366-370.
Externí odkaz:
https://www.jstor.org/stable/27042332
Publikováno v:
Geosciences, Vol 13, Iss 9, p 273 (2023)
We report estimated stable isotope compositions of Artic paleoprecipitation using phyllosilicates sampled from three paleosols and two bentonites in the Prince Creek Formation (Maastrichtian) in northern Alaska. Previous studies reported a deuterium
Externí odkaz:
https://doaj.org/article/6f0fc397d03f4aacac705988a09d3caa
Publikováno v:
NBER Working Papers; Apr2024, Issue 32282-32376, Preceding p1-44, 97p