The earliest Cambrian record of animals and ocean geochemical change

AC Maloof, SM Porter, JL Moore, FÖ Dudás… - …, 2010 - pubs.geoscienceworld.org
The Cambrian diversification of animals was long thought to have begun with an explosive
phase at the start of the Tommotian Age. Recent stratigraphic discoveries, however, suggest …

A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry

S Barker, M Greaves, H Elderfield - Geochemistry, Geophysics …, 2003 - Wiley Online Library
The various cleaning steps required for preparation of foraminiferal samples for Mg/Ca (and
Sr/Ca) analysis are evaluated for their relative importance and effects on measured …

Climate impact of late Quaternary equatorial Pacific sea surface temperature variations

DW Lea, DK Pak, HJ Spero - Science, 2000 - science.org
Magnesium/calcium data from planktonic foraminifera in equatorial Pacific sediment cores
demonstrate that tropical Pacific sea surface temperatures (SSTs) were 2.8°±0.7° C colder …

Evolution of the 87Sr/86Sr composition of Neoproterozoic seawater

GP Halverson, FÖ Dudás, AC Maloof… - Palaeogeography …, 2007 - Elsevier
The limited availability and low resolution of biostratigraphic and radiometric data in the
Precambrian necessitate using marine chemostratigraphy to correlate and integrate the …

Effects of seawater carbonate ion concentration and temperature on shell U, Mg, and Sr in cultured planktonic foraminifera

AD Russell, B Hönisch, HJ Spero, DW Lea - Geochimica et Cosmochimica …, 2004 - Elsevier
We investigate the sensitivity of U/Ca, Mg/Ca, and Sr/Ca to changes in seawater [CO32−]
and temperature in calcite produced by the two planktonic foraminifera species, Orbulina …

The relationship between shell size and Mg/Ca, Sr/Ca, δ18O, and δ13C of species of planktonic foraminifera

H Elderfield, M Vautravers… - Geochemistry, Geophysics …, 2002 - Wiley Online Library
The relationship between shell size and Mg/Ca, Sr/Ca, δ18O, and δ13C of planktonic
foraminiferal calcite has been investigated using seventeen species in six different size …

Global variability in seawater Mg: Ca and Sr: Ca ratios in the modern ocean

M Lebrato, D Garbe-Schönberg… - Proceedings of the …, 2020 - National Acad Sciences
Seawater Mg: Ca and Sr: Ca ratios are biogeochemical parameters reflecting the Earth–
ocean–atmosphere dynamic exchange of elements. The ratios' dependence on the …

Controls on shell Mg/Ca and Sr/Ca in cultured planktonic foraminiferan, Globigerinoides ruber (white)

B Kısakürek, A Eisenhauer, F Böhm… - Earth and Planetary …, 2008 - Elsevier
Mg/Ca and Sr/Ca ratios were determined on a single species of planktonic foraminiferan,
Globigerinoides ruber (white), collected from the Gulf of Eilat and cultured in seawater at five …

Constraining the marine strontium budget with natural strontium isotope fractionations (87Sr/86Sr∗, δ88/86Sr) of carbonates, hydrothermal solutions and river waters

A Krabbenhöft, A Eisenhauer, F Böhm… - … et Cosmochimica Acta, 2010 - Elsevier
We present strontium (Sr) isotope ratios that, unlike traditional 87Sr/86Sr data, are not
normalized to a fixed 88Sr/86Sr ratio of 8.375209 (defined as δ88/86Sr= 0 relative to NIST …

Elemental and isotopic proxies

D Lea - Oceans Mar. Geochem, 2006 - books.google.com
Elemental and isotopic proxies Page 385 6.14 Elemental and Isotopic Proxies of Past Ocean
Temperatures DW Lea University of California, Santa Barbara, CA, USA 6.14. 1 …