In the geological sciences it has only recently been recognized how important the process of
impact cratering is on a planetary scale, where it is commonly the most important surface …

The occurrence of shock metamorphosed quartz is the most common petrographic criterion
for the identification of terrestrial impact structures and lithologies. Its utility is due to its …

Abstract The Late Triassic (Carnian to Rhaetian Stages: ca. 237–201 Ma) has a long history
of geological research, although controversy remains over the precise definition of key sub …

The Eastern Warburton Basin, Northeast South Australia, features major geophysical
anomalies, including a magnetic high of near-200nT centred on a~ 25km-wide magnetic low …

A progress report on geophysical and geological investigations in the 35–40 km diameter
Azuara probable impact structure (northeast Spain) is given. The target is a 10 km thick …

Abstract Quartzite cobbles in Lower Triassic Buntsandstein conglomerates from
northeastern Spain display unusual millimeter-to centimeter-sized circular craters …

A review of the evidence of meteorite-impact events in the sedimentary record of Spain
reveals that the only proven impact-related bed is the clay layer at the Cretaceous-Tertiary …

Las controversias científicas y la resistencia de la comunidad científica a aceptar los
cambios paradigmáticos constituyen un buen ejemplo de cómo se construye la ciencia. Los …

Impact structures can be catalogued according to the age of the rocks in which they are now
found (" country rocks"). The observed frequency distribution of craters by age of country …

Two circular features detected on satellite images of Brazil's Maranhao sedimentary basin
are verified as probable meteoroid impact structures. Impact recognition guidelines and …