Results 71 to 80 of about 12,911 (237)
I. Glaciagenic and Related Strata of the Neoproterozoic Kingston Peak Formation in the Panamint Range, Death Valley Region, California. II. The Basal Ediacaran Noonday Formation, Eastern California, and Implications for Laurentian Equivalents. III. Rifting of Southwest Laurentia During the Sturtian-Marinoan Interglacial: The Argenta Orogeny [PDF]
, 2009 I. Glacigenic deposits in the Death Valley region occur within the Neoproterozoic Kingston Peak Formation. In the Panamint Range, immediately west of Death Valley, these strata are ≥1000 m thick and are continuously exposed for nearly 100 km along the ...
Petterson, Ryan
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Frontiers in Earth Science, 2014 The recently discovered high, plume-like 3He/4He ratios at Rungwe Volcanic Province (RVP) in southern Tanzania, similar to those at the Main Ethiopian Rift in Ethiopia, strongly suggest that magmatism associated with continental rifting along the entire ...
Paterno R Castillo +3 more
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Exceptional Preservation of Fossils in an Upper Proterozoic Shale
, 1988 Late Proterozoic organisms must have been diverse and widely distributed, but in general their fossil record is both taxonomically and environmentally limited.
N. J. Butterfield +5 more
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Ecology of Freshwater Fish, Volume 35, Issue 3, July 2026.ABSTRACT Migratory fish species have experienced substantial declines throughout aquatic habitats, but actions to manage and conserve migratory species require a better understanding of the relative contributions of local populations to the metapopulation.
Samuel L. Bourret +3 more
wiley +1 more source
Мінеральні ресурси України, 2015 Minerageny of Early-Precambrian structural-lithological complexes (SLC) of the Ukrainian shield (USh) and also Angola, Mayombe, Kasai shields in the western part of Equatorial Africa is described.
A. S. Voynovskiy
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Photosynthetic primary production in the Mesoproterozoic
New Phytologist, Volume 251, Issue 1, Page 64-80, July 2026.Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo +1 more
wiley +1 more source
On peculiarities of composition and properties of ancient hydrocarbon source rocks
Записки Горного институтаPrecambrian rocks are widespread within all continents of the Earth; that said, sedimentary associations of these deposits are of special interest in search for oil and gas fields.
Mariya A. Bolshakova +2 more
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Литосфера, 2018 The totality of structural-tectonic, lithologic-mineralogical, isotope-geochemical data on the geology of Primorye and adjacent territories of Northeast China and the Amur Region allows us to justify the criterions for the existence of an ancient sialic ...
Sergei O. Maksimov +2 more
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The chemical evolution of the Proterozoic biosphere [PDF]
, 2018 The chemical evolution of the Proterozoic biosphere is not a well comprehended topic. Major gaps exist in the redox record which documents the ocean’s transition from a dominantly ferruginous state throughout most of the Proterozoic, to widespread deep ...
Doyle, Katherine Audrey
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The Depositional Record, Volume 12, Issue 3, June 2026.New bio‐sequence framework for the Eocene–Oligocene transition in Zagros. Geochemical data validate basin depth control on SB1 vs. SB2 boundaries. SEM‐EDS analyses confirm subaerial exposure versus continuous deposition. Sensitivity analysis quantifies sub‐10% uncertainty in stratigraphic interpretations. Resolves the Pyrenean orogeny's variable impact
Sahar Rokni +4 more
wiley +1 more source