Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Bradbury, HJ"'
During the Early Toarcian, volcanic gases released by the Karoo-Ferrar large igneous province are widely believed to have caused severe environmental disturbances, including ocean acidification. Here we show records of δ Ca and δ Sr through the Ear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c896b3145602027829516a099084d8c6
Autor:
Bradbury, HJ, Turchyn, AV
Previous attempts to quantify the amount of sedimentary carbonate precipitation in modern marine sediments have been derived from the flux of calcium into the sediments due to diffusion under assumed steady state, the application of Fick's first law,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74543d5c310cfb7283e634a8032ffbce
https://www.repository.cam.ac.uk/handle/1810/292210
https://www.repository.cam.ac.uk/handle/1810/292210
Reconstructing changes in the calcium isotopic composition (δ44Ca) of the ocean over Earth history has been challenging. This difficulty is due to the large range of calcium isotope fractionation factors during mineral precipitation and the potentia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::155173fcd19ef341f3448e626637e723
Autor:
James, DH, Bradbury, HJ, Antler, G, Steiner, Z, Hutchings, AM, Sun, X, Saar, R, Greaves, M, Turchyn, AV
We present pore fluid geochemistry, including major ion and trace metal concentrations and the isotopic composition of pore fluid calcium and sulfate, from the uppermost meter of sediments from the Gulf of Aqaba (Northeast Red Sea) and the Iberian Ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9b7d6bb547b90476724d9c10a012046
Autor:
Bradbury, HJ, Turchyn, AV
We present calcium isotope data from pore fluids and solids from Ocean Drilling Program Leg 175: Sites 1081 and 1086 (off the coast of West Africa). These sites are similar with respect to geographic location, sediment age (from modern to 8 Myr), and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e7637711857878ca6923f5358517890
We present the results of an isotope-enabled reactive transport model of a sediment column undergoing active microbial sulfate reduction to explore the response of the sulfur and oxygen isotopic composition of sulfate under perturbations to steady st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b205aa268ee57d64edbd35e067cb4ac6
Autor:
Magiera, M, Lechleitner, FA, Erhardt, AM, Hartland, A, Kwiecien, O, Cheng, H, Bradbury, HJ, Turchyn, AV, Riechelmann, S, Edwards, L, Breitenbach, SFM
To date Indian summer monsoon (ISM) dynamics have been assessed by changes in stalagmite δ18O. However, stalagmite δ18O is influenced by multiple environmental factors (e.g., atmospheric moisture transport, rainfall amount at the study site, and IS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f7ebebbece28095893024e9ac45774e
A multiproxy record from a fast-growing stalagmite reveals variable hydroclimate on the California coast across the 8.2 kyr event and a precursor event likely caused by initial drainage of proglacial Lake Agassiz. Using speleothem δ Ca, we develop t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50b52ae386d90a550e34d7eab06203fa
Autor:
Alena Giesche, David A. Hodell, Cameron A. Petrie, Gerald H. Haug, Jess F. Adkins, Birgit Plessen, Norbert Marwan, Harold J. Bradbury, Adam Hartland, Amanda D. French, Sebastian F. M. Breitenbach
Publikováno v:
Communications Earth & Environment
Acknowledgements: The authors would like to thank Dr. Giulio Lampronti for assistance with XRD measurements at the University of Cambridge. N.M. received financial support from the German Science Foundation (DFG projects MA4759/9-1 and MA4759/11-1).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1026d78b09e2190a773e2b1ecf5b50cd
https://www.repository.cam.ac.uk/handle/1810/348307
https://www.repository.cam.ac.uk/handle/1810/348307
Autor:
Sylvia Riechelmann, Harold J. Bradbury, Lawrence Edwards, Hai Cheng, Ola Kwiecien, Matthias Magiera, Adam Hartland, Alexandra V. Turchyn, Franziska A. Lechleitner, Andrea M. Erhardt, Sebastian F. M. Breitenbach
Publikováno v:
Geophysical Research Letters
To date Indian summer monsoon (ISM) dynamics have been assessed by changes in stalagmite δ18O. However, stalagmite δ18O is influenced by multiple environmental factors (e.g., atmospheric moisture transport, rainfall amount at the study site, and IS