Results 41 to 50 of about 12,960 (140)

Interaction between fluvial systems and alluvial fans over the Gorafe Unconformity (Granada Geopark): integration of digital outcrop model and facies analysis

open access: yesGeogaceta
The Gorafe Unconformity, located in the central sector of the Guadix-Baza Basin (Granada Geopark), represents a key outcrop to analyze the transition from compressive tectonics to Pliocene–Quaternary sedimentation in the central sector of the Betic ...
Paula Rodríguez Fernández   +3 more
doaj   +1 more source

Revisión de la sucesión de la Sierra de la Zarzuela: último registro del Ediacárico-¿Fortuniense inferior? del Gran Anticlinorio Extremeño central, Zona Centroibérica meridional, Macizo Ibérico, España

open access: yesEstudios Geologicos, 2019
En la Zona Centroibérica meridional se reconoce la sucesión más completa de rocas del Ediacárico tardío que afloran en el sinclinal de la Sierra de la Zarzuela, discordantes sobre el Supergroup del Alcudiense inferior-Domo Extremeño.
A. P. Pieren, M. Rodríguez-Martínez
doaj   +1 more source

The complex case of Macaronichnus trace fossil affecting rock porosity

open access: yesScientific Reports, 2021
Bioturbation is an important factor for reservoir quality due to the modification of host rock petrophysical properties (i.e., porosity, permeability, and connectivity). However, there is no predictable relationship between bioturbation and its effect on
Javier Dorador   +2 more
doaj   +1 more source

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva   +1 more
wiley   +1 more source

The Late Miocene Rifian corridor as a natural laboratory to explore a case of ichnofacies distribution in ancient gateways

open access: yesScientific Reports, 2021
Oceanic gateways have modulated ocean circulation and have influenced climatic variations throughout the Earth´s history. During the late Miocene (7.8–7.35 Ma), the Atlantic Ocean and the Mediterranean Sea were connected through the Rifian Corridor ...
Olmo Miguez-Salas   +2 more
doaj   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

open access: yesThe Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha   +2 more
wiley   +1 more source

Principios de estratigrafía [PDF]

open access: yes, 2002
Luego de consultar muchos textos de estratigrafía se escogieron como referencias básicas los libros de Boggs 1995 y Homewood et al 2000, ya que estos corresponden a amplias recopilaciones bibliográficas que incluyen todos los conceptos modernos de la ...
Blandón Montes, Astrid
core  

North Atlantic Ocean–Atmosphere Dynamics Controlled the Hydroclimate in Western Iberia During the Holocene

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 9, September 2026.
Abstract Hydroclimate variability in western Iberia during the Holocene remains insufficiently resolved despite the high sensitivity of this region to the North Atlantic atmosphere and ocean dynamics. Here, we present the first source‐resolved reconstruction of centennial‐ to millennial‐scale moisture variability over the last 11,000 years using ...
U. Fernández‐Pérez   +12 more
wiley   +1 more source

Icnitas de artiodactilos (Mammalia) del Paleogeno de Olcoz (Depresion del Ebro, Navarra)

open access: yesEstudios Geologicos, 1994
Se describe un conjunto de icnitas fósiles de mamíferos ubicado en los alrededores de la localidad navarra de Olcoz (Depresión del Ebro). Las huellas se localizan en niveles areniscosos de la «Formación de Mués», de posible edad Sueviense (Oligoceno ...
H. Astibia   +2 more
doaj   +1 more source

Predatory behaviour on Ostracoda: spatial analysis of drill‐hole distribution in relation to shell size and ornamentation

open access: yesPalaeontology, Volume 69, Issue 4, July/August 2026.
Abstract Palaeobiological evidence of predation on ostracods derives primarily from drill‐hole traces. However, this record is limited to sparse reports and rare quantitative analyses hinder understanding of influence of predator–prey interaction in the evolution of ostracods. Moreover, predation is rarely studied in deep‐water settings.
Camila Souza Cruz   +6 more
wiley   +1 more source

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