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 …

The Ordovician of Scandinavia: a revised regional stage classification

AT Nielsen, P Ahlberg, JOR Ebbestad… - Geological Society …, 2023 - lyellcollection.org
Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …

Phanerozoic flooding of North America and the Great Unconformity

AR Tasistro-Hart, FA Macdonald - Proceedings of the …, 2023 - National Acad Sciences
The flooding record of North America has been used to infer patterns of global erosion and
sea level in deep time. Here, we utilize the geospatial dimension of the stratigraphic record …

Neoproterozoic of laurentia

FA Macdonald, WA Yonkee, RM Flowers… - 2023 - pubs.geoscienceworld.org
Neoproterozoic to Cambrian isolation of Laurentia during the breakup of Rodinia was
associated with multiple large igneous provinces, protracted multiphase rifting, and variable …

Paleomagnetic insights into the Cambrian biogeographic conundrum: Did the North China craton link Laurentia and East Gondwana?

H Zhao, S Zhang, M Zhu, J Ding, H Li, T Yang… - …, 2021 - pubs.geoscienceworld.org
Redlichiid trilobite and small shelly fossils indicate strong ties of the North China craton
(NCC) to Gondwana during the early Cambrian, while recent discoveries of the …

Zircon (U-Th)/He thermochronology reveals pre-Great Unconformity paleotopography in the Grand Canyon region, USA

BA Peak, RM Flowers, FA Macdonald… - …, 2021 - pubs.geoscienceworld.org
Abstract The Great Unconformity is an iconic geologic feature that coincides with an
enigmatic period of Earth's history that spans the assembly and breakup of the …

Novel age constraints for the onset of the Steptoean Positive Isotopic Carbon Excursion (SPICE) and the late Cambrian time scale using high-precision U-Pb detrital …

HR Cothren, TP Farrell, FA Sundberg… - …, 2022 - pubs.geoscienceworld.org
Abstract The Steptoean Positive Isotopic Carbon Excursion (SPICE) is a prominent+ 4–5‰
shift in the Cambrian δ13C record used for global chronostratigraphic correlation. The onset …

Asynchronous trilobite extinctions at the early to middle Cambrian transition

FA Sundberg, KE Karlstrom, G Geyer… - …, 2020 - pubs.geoscienceworld.org
Trilobites appeared and diversified rapidly in the Cambrian, but it is debated as to whether
their radiations and extinctions were globally synchronous or geographically restricted and …

(Re) proposal of three Cambrian subsystems and their geochronology

E Landing, G Geyer, MD Schmitz, T Wotte… - Episodes Journal of …, 2021 - episodes.org
The Cambrian is anomalous among geological systems as many reports divide it into three
divisions of indeterminate rank. This use of “lower”,“middle”, and “upper” has been a …

The Ediacaran–Cambrian transition in the southern Great Basin, United States

EF Smith, LL Nelson, N O'Connell, A Eyster… - …, 2023 - pubs.geoscienceworld.org
Abstract The Ediacaran–Cambrian boundary strata in the Great Basin of the southwestern
United States record biological, geochemical, and tectonic change during the transformative …