Results 81 to 90 of about 308 (178)

A long-term record of early to mid-Paleozoic marine redox change. [PDF]

open access: yesSci Adv, 2021
Sperling EA   +19 more
europepmc   +1 more source

An Early Ordovician (Floian) Conodont Fauna from the Eastern Cordillera of Peru (Central Andean Basin)

open access: yesGeologica Acta, 2009
Late Floian conodonts are recorded from a thin limestone lens intercalated in the lower part of the San José Formation at the Carcel Puncco section (Inambari River), Eastern Cordillera of Peru.
J.C. GUTIÉRREZ-MARCO   +3 more
doaj  

Characteristics of hydrocarbon-generating organisms and influencing factors of source rock development: A case study of Wulalike Formation, Ordos Basin

open access: yesYouqicang pingjia yu kaifa
The Wulalike Formation developed in the southwest margin of the Ordos Basin is an important shale gas exploration and development horizon in northern China, characterized by general gas occurrence and local enrichment.
ZHANG YI   +6 more
doaj  

Dynamic redox-promoted iron and nutrient cycling drove graptolite evolution across the Ordovician-Silurian transition. [PDF]

open access: yesSci Adv
Qiu Z   +10 more
europepmc   +1 more source

Synchronizing rock clocks in the late Cambrian. [PDF]

open access: yesNat Commun, 2022
Zhao Z   +6 more
europepmc   +1 more source

Swedish Graptolites [PDF]

open access: yesGeological Magazine, 1896
openaire   +1 more source

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