Results 31 to 40 of about 899 (204)

Depositional environment, ichnological features and oxygenation of Permian to earliest Triassic marine sediments in central Spitsbergen, Svalbard

open access: yesPolar Research, 2016
Late Early Permian–lowermost Triassic carbonate, siliceous (spiculites) and clastic marine sediments in the Marmierfjellet area (Isfjorden, central Spitsbergen) contain a relatively diverse and abundant trace fossil assemblage providing important ...
Alfred Uchman   +4 more
doaj   +1 more source

The Trouble with Ichnofacies

open access: yesGeosciences
For about 60 years, the ichnofacies model has been used to identify trace fossil assemblages associated with sedimentary environments. However, the ichnofacies model faces many problems, including: (1) how ichnofacies are defined; (2) non-environmental ...
Spencer G. Lucas
doaj   +1 more source

The ethological study of Glossifungites ichnofacies in the modern & Miocene Mahakam Delta, Indonesia

open access: yes, 2018
The presence of Glossifungites ichnofacies indicate cohesive or more lithified substrate environment. Therefore, the presence of Glossfungites ichnofacies surface does not always related to sequence boundary, but more reasonable as event surface.
Ery Arifullah (5730671)
core   +1 more source

Alluvial ichnofacies from Upper Triassic red beds in India: Implications for palaeoenvironment and palaeoclimate

open access: yes, 2022
Trace fossils are highly sensitive to the hydrodynamic conditions of depositional systems, substrate, and climate and hence yield information about spatio-temporal changes in palaeoenvironment and palaeoclimate.
Sanghamitra Ray   +5 more
core   +1 more source

The Ordovician strata of the Ennedi Plateau, northeastern Chad (Erdi Basin)

open access: yesComptes Rendus. Géoscience, 2023
In the Ennedi Plateau, northeastern Chad, Cambrian(?)–Ordovician to Carboniferous strata represent one of the most proximal succession of the north-facing Gondwana platform. This study presents preliminary results related to the c.
Ghienne, Jean-François   +4 more
doaj   +1 more source

The effects of bioturbation on porewater chemistry and early marine diagenesis: Evidence from a modern intertidal zone in Abu Dhabi, U.A.E.

open access: yesSedimentology, EarlyView.
ABSTRACT Early marine carbonate cements generally form in CaCO3‐supersaturated seawater at the seabed or shallow burial depths, resulting in syn‐sedimentary cemented firmgrounds and hardgrounds. The processes controlling early marine diagenesis are complex, particularly in coastal environments where geochemistry is influenced by different water sources
Drew Brown   +7 more
wiley   +1 more source

Unusual occurrence of Cochlichnus in aeolian sandstones: evidence for a stiletto fly larval origin

open access: yesPapers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Cochlichnus anguineus is an ichnotaxon recognized for its distinctive regular wavy morphology. It is a characteristic trace fossil typically associated with aquatic and marginal aquatic environments. However, in this study we examine its unusual occurrence in the aeolian sandstones of the Botucatu Formation (Lower Cretaceous, Paraná Basin ...
Bernardo de C. P. e M. Peixoto   +8 more
wiley   +1 more source

Parasitic gastropod bioerosion trace fossil on Cenomanian oysters from Le Mans, France and its ichnologic and taphonomic context [PDF]

open access: yesActa Palaeontologica Polonica, 2017
We describe and name Loxolenichnus stellatocinctus Breton and Wisshak igen. et isp. nov., a bioerosion trace fossil on an Upper Cenomanian oyster from Le Mans (France). This trace is attributed here to a parasitic gastropod.
Gérard Breton   +3 more
doaj   +1 more source

The Variable Impact of Heinrich Events on the Benthic Environment of the Porcupine Abyssal Plain

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 5, May 2026.
Abstract Heinrich events (HEs) are Pleistocene climate disturbances caused by massive freshwater discharges from the Laurentide Ice Sheet via the Hudson Strait. They appear in marine sediments as layers of ice‐rafted detritus (IRD) and significantly impact the benthic environment.
Olmo Miguez‐Salas   +6 more
wiley   +1 more source

The Celliforma ichnofacies in calcareous paleosols: An example from the late Miocene Cerro Azul Formation, La Pampa, Argentina [PDF]

open access: yes, 2016
Invertebrate trace fossils from the late Miocene Cerro Azul Formation (La Pampa, Argentina) are described and compared with known paleosol ichnofacies. The formation is a loess succession punctuated by numerous calcareous paleosols.
Sostillo, Renata   +7 more
core   +1 more source

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