Results 21 to 30 of about 29,296 (274)

Neoproterozoic to early Paleozoic extensional and compressional history of East Laurentian margin sequences:the Moine Supergroup, Scottish Caledonides [PDF]

open access: yes, 2014
This work was in part supported by Natural Environment Research Council grant NE/J021822/1, National Science Foundation grant EAR-0087650, and funds from our respective institutions.Neoproterozoic siliciclastic-dominated sequences are widespread along ...
Merle, Renaud   +21 more
core   +1 more source

87Sr/86Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]

open access: yes, 2004
New calcite <sup>87</sup>Sr/<sup>86</sup>Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>
Fallick, A.E.   +7 more
core   +1 more source

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]

open access: yes, 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
core   +1 more source

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

open access: yes, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Gorokhov, I.M.   +8 more
core   +1 more source

Distribution of Cambrian Source Rock Controlled by the Inherited Paleotopography on the Precambrian Basement in the Tarim Basin, NW China

open access: yesFrontiers in Earth Science, 2022
The Cambrian source rock is a key indicator that will guide future hydrocarbon explorations in ultra-deep strata. Despite its importance, the characteristics of paleotopography on the Precambrian basement and the distribution of source rocks above it ...
Haowei Yuan   +10 more
doaj   +1 more source

Molecular identification of fungi microfossils in a Neoproterozoic shale rock

open access: yesScience Advances, 2020
We report the discovery of 715 to ca. 810 million–year–old fungal fossils through molecular characterization of vestigial chitin. Precambrian fossils of fungi are sparse, and the knowledge of their early evolution and the role they played in the ...
S. Bonneville   +9 more
semanticscholar   +1 more source

The Difunta Correa metasedimentary sequence (NW Argentina): relict of a Neoproterozoic platform? — elemental and Sr-Nd isotope evidence

open access: yesRevista Mexicana de Ciencias Geológicas, 2018
The Sierra de Pie de Palo (Western Sierras Pampeanas, Argentina) in the Andean foreland is mainly formed by a Mesoproterozoic basement and an Ediacaran metasedimentary cover referred to as the Difunta Correa metasedimentary sequence.
Carlos Ramacciotti   +3 more
doaj   +1 more source

TSM prototype basins on the Neoproterozoic Yangtze Craton

open access: yesShiyou shiyan dizhi, 2020
TSM basin analysis of Neoproterozoic prototype basins on Yangtze Craton, South China were studied using a large number of field outcrop sections, latest drilling data, and numerous previous studies.
Fengli YANG   +4 more
doaj   +1 more source

The geology of the Capiru Group, Curitiba Terrane, Southern Ribeira Belt (Brazil)

open access: yesJournal of Maps, 2021
The Capiru Group is a Neoproterozoic metasedimentary unit that crops out in the Curitiba terrane, Southern Ribeira Belt, Brazil. A detailed geological mapping of this unit was performed during 2016 to 2020. Original interpretations and the new geological
Larissa da Rocha Santos   +5 more
doaj   +1 more source

Sedimentology and stratigraphic correlation of Vendian deposits in the southwestern Siberian Craton: Major contribution of an exocratonic clastic source to sedimentary systems

open access: yesЛитосфера, 2018
The study focuses on the sedimentation and stratigraphy of a large Vendian (Ediacaran) sedimentary basin in the southwestern Siberian craton, with implications for the origin of its units and subunits.
Julius K. Sovetov
doaj   +1 more source

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