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On the nature of the earliest known lifeforms. [PDF]
ElifeKanaparthi D +8 more
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Unveiling Neolithic Economic Behavior: A Novel Approach to Chert Procurement at Çukuriçi Höyük, Western Anatolia. [PDF]
J Archaeol Method TheoryBrandl M +5 more
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A Later Stone Age quartz knapping workshop and fireplace dated to the Early Holocene in Senegal: The Ravin Blanc X site (RBX). [PDF]
PLoS OnePruvost C +12 more
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Sustained shift in the morphology of organic-walled microfossils over the Ediacaran-Cambrian transition. [PDF]
R Soc Open SciTingle KE +3 more
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Prototaxites was an extinct lineage of multicellular terrestrial eukaryotes
Loron CC +11 more
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Facies, 1984
A new classification scheme for non-detrital siliceous rocks is proposed, facts and problems coneerning the origin of cherts are discussed, and a new genetic model is presented. The relationship between opal-and quartz-silica phases is discussed, and it is suggested that most of the quartz cherts originated from opaline precursors.
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A new classification scheme for non-detrital siliceous rocks is proposed, facts and problems coneerning the origin of cherts are discussed, and a new genetic model is presented. The relationship between opal-and quartz-silica phases is discussed, and it is suggested that most of the quartz cherts originated from opaline precursors.
openaire +1 more source
The Permian Chert Event in South China: New geochemical constraints and global implications
Earth-Science Reviews, 2023Wenxuan Hu, Xianguo Lang, Hu Huang
exaly