Results 41 to 50 of about 684 (155)
Carbonate sedimentology: An evolved discipline
The Depositional Record, Volume 12, Issue 1, February 2026.Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase, studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases.
Noel P. James, Peir K. Pufahl
wiley +1 more source
Latin American Journal of Sedimentology and Basin Analysis, 2021 Se compara la lito- bio- y quimioestratigrafía de sucesiones sedimentarias del Neoproterozoico del Cratón del Río de la Plata, a saber: Grupo Arroyo del Soldado (GAS), Uruguay y Grupo Sierras Bayas - Formación Cerro Negro (GSB-FmCN) de Tandilia ...
Claudio Gaucher +3 more
doaj +2 more sources
Terra Nova, 2011 Terra Nova, 23, 382–389, 2011AbstractAn in situ assemblage of Cloudina, thrombolites and an ichnofossil (cf. Archaeonassa), together with fragments of Corumbella werneri, is reported here, from a tidally influenced, shallow, lagoonal setting on a carbonate ramp within the Itapucumi Group, Paraguay.
Warren, Lucas V. +6 more
openaire +6 more sources
Estudios Geologicos, 2019 An updated stratigraphic subdivision of the Ediacaran and Terreneuvian in the Alcudia valley and the Toledo Mountains, Central Iberian Zone, is documented here.
J. J. Álvaro +4 more
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U-Pb geochronology and global context of the Charnian Supergroup, UK: constraints on the age of key Ediacaran fossil assemblages [PDF]
, 2014 U-Pb (zircon) ages for key stratigraphic volcanic horizons within the ∼3200-m-thick Ediacaran-age Charnian Supergroup provide an improved age model for the included Avalonian assemblage macrofossils and, hence, temporal constraints essential for ...
Carney, John N. +5 more
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A composite reference section for terminal Proterozoic strata of southern Namibia [PDF]
, 1998 Integrated sequence stratigraphic and chemostratigraphic data yield a framework for correlations of stratigraphic units in the terminal Proterozoic to Cambrian Witvlei and Nama Groups of Namibia.
Grotzinger, John P. +3 more
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Sedimentology, Volume 72, Issue 2, Page 365-407, February 2025.ABSTRACT The lower Nama Group in southern Namibia contains trace fossils and soft‐bodied and biomineralized macro‐organisms from the terminal Ediacaran Period (ca 550 to 539 Ma), offering insights into early metazoan evolution. Interpretation of the fossilized Nama Group organisms as being preserved in, or very close to, the environments in which they ...
Brennan O'Connell +7 more
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Biodiversity of the Ediacaran-early Cambrian transition in northwestern Argentina and related areas [PDF]
, 2012 The Ediacaran-early Cambrian is a significant time of geological history in terms of biodiversity dynamics. During this time-span a particular soft-bodied fauna developed and disappeared, being replaced by the emergent skeleton-bearing faunas.
Aceñolaza, Florencio Gilberto
core
The tectonic evolution of the Neoproterozoic Brasília Belt, central Brazil : a geochronological and isotopic approach [PDF]
, 2016 A Faixa Brasília é um dos mais completos orógenos Neoproterozoicos no Gondwana Ocidental. Durante os últimos dez anos, o rápido progresso no entendimento da evolução tectônica desse orógeno foi proporcionado pela produção de novos dados geocronológicos U-
Pimentel, Márcio Martins
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How to engineer a habitable planet: the rise of marine ecosystem engineers through the Phanerozoic
Palaeontology, Volume 67, Issue 5, September/October 2024.Abstract Ecosystem engineers are organisms that modify their physical habitats in a way that alters resource availability and the structure of the communities they live in. The evolution of ecosystem engineers over the course of Earth history has thus been suggested to have been a driver of macroevolutionary and macroecological changes that are ...
Alison T. Cribb, Simon A. F. Darroch
wiley +1 more source