Carbonates before skeletons: A database approach

MD Cantine, AH Knoll, KD Bergmann - Earth-Science Reviews, 2020 - Elsevier
Carbonate minerals have precipitated from seawater for at least the last 3.8 billion years, but
changes in the physical and chemical properties of carbonate rocks demonstrate that the …

A meta-analysis of the Steptoean positive carbon isotope excursion: the SPICEraq database

MA Pulsipher, JD Schiffbauer, MJ Jeffrey… - Earth-Science …, 2021 - Elsevier
Abstract The Steptoean Positive Isotopic Carbon Excursion (SPICE) is a prominent
chemostratigraphic feature in the Lower Paleozoic. It has been used to correlate Upper …

Pulse of atmospheric oxygen during the late Cambrian

MR Saltzman, SA Young, LR Kump… - Proceedings of the …, 2011 - National Acad Sciences
A rise in atmospheric O2 has been linked to the Cambrian explosion of life. For the plankton
and animal radiation that began some 40 million yr later and continued through much of the …

Isotopic composition of organic and inorganic carbon from the Mesoproterozoic Jixian Group, North China: Implications for biological and oceanic evolution

H Guo, Y Du, LC Kah, J Huang, C Hu, H Huang… - Precambrian …, 2013 - Elsevier
Analyses of marine carbon isotope profiles have provided much of our current
understanding of the evolution of Earth surface environments, particularly in the latter portion …

Environmental and trilobite diversity changes during the middle-late Cambrian SPICE event

L Zhang, TJ Algeo, L Zhao, TW Dahl, ZQ Chen… - …, 2024 - pubs.geoscienceworld.org
Abstract The Steptoean Positive Carbon Isotope Excursion (SPICE) event at ca. 497–494
Ma was a major carbon-cycle perturbation of the late Cambrian that coincided with rapid …

Animal abundance and redox conditions during the Furongian Cambrian SPICE event, western Utah

AE Olsen, DS Jones, DA Fike, SB Pruss - Palaeogeography …, 2023 - Elsevier
Abstract The Steptoean Positive Isotopic Carbon Excursion (SPICE) is recognized as a
global perturbation of the carbon cycle, with δ 13 C excursions (+ 4–5‰) found worldwide …

The dynamic ocean redox evolution during the late Cambrian SPICE: Evidence from the I/Ca proxy

R He, A Pohl, A Prow, G Jiang, CC Huan… - Global and Planetary …, 2024 - Elsevier
Abstract The late Cambrian Steptoean positive carbon isotope excursion (SPICE) is a
distinct chemostratigraphic feature of the Paleozoic, marked by a 4–5‰ shift in carbonate δ …

Cambrian trilobites from the Nounan Dolomite and lower St. Charles Formation (upper Marjuman to lower Sunwaptan; Miaolingian to Furongian Series), Smithfield …

FA Sundberg, HR Cothren, CM Dehler - Journal of Paleontology, 2024 - cambridge.org
The trilobite faunas that occur with the Steptoean Positive Isotope Carbon Excursion
(SPICE) at Smithfield Canyon, Utah, have been reported, but not illustrated. Given the …