Model for calcite spherulite formation in organic, clay-rich, lacustrine carbonate shales (Barbalha Formation, Aptian, Araripe Basin, NE Brazil)
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DOI: 10.1016/j.marpetgeo.2021.104988
Abstract: Abstract The formation of carbonate spherulites, recognized as part of the South-Atlantic Pre-Salt reservoir rocks, remains enigmatic. Well-chosen analogues provide insights into depositional and diagenetic conditions and the biotic versus abiotic processes that might influence… read more here.
Keywords: formation; aptian araripe; clay rich; organic clay ... See more keywords
An overview of the Hexagenitidae (Ephemeroptera) from the Crato Formation (Aptian, Lower Cretaceous) of Brazil, with the description of a new species
Sign Up to like & getrecommendations! Published in 2021 at "Historical Biology"
DOI: 10.1080/08912963.2021.1952196
Abstract: Among mayflies, the Hexagenitidae is the most common family of the Cretaceous, including in the world-renowned Crato Formation (Aptian) of northeastern Brazil. However, most of the Crato mayfly fau... read more here.
Keywords: hexagenitidae ephemeroptera; overview hexagenitidae; crato formation; ephemeroptera crato ... See more keywords