Results 21 to 30 of about 1,644,051 (117)
87Sr/86Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]
, 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
Structural peculiarities and geodynamic evolution of Taimyr Peninsula in the Neoproterozoic
Литосфера, 2018 Structural relationships between the Neoproterozoic rock complexes of a continental massif, island arc with rear reef and back-arc basin geodynamic affinities are described and considered in this work based on field observations within the northeastern ...
Sergei G. Samygin
doaj +1 more source
Glass in Late Antiquity in the Near East [PDF]
, 2007 © 2007 Brill The document attached has been archived with permission from the publisher. An external link to the publisher’s copy is included.This paper seeks to explore some of the possible connections between three late antique strands of glass ...
O'Hea, M.
core +1 more source
Известия высших учебных заведений: Геология и разведка, 2018 Kandalaksha graben, located in the water-area of the White sea, is a part of the Onega-Kandalaksha paleorift of the Riphean time of foundation. It is filled with the terrigenous formations of the Terskaya suites ranging from 3 to 8 km by depth, while the
A. S. Baluev +4 more
doaj +1 more source
Comparison of Lower and Middle Riphean sparry magnesite deposits of the Southern Urals province [PDF]
, 2002 Sparry magnesite deposits (SMD) of the Lower Riphean (LR) and Middle Riphean (MR) sequences in the western slope of the South Urals have some distinguished peculiarities, which allows to compare them and speculate about the mechanism of ore formation and
KRUPENIN, MIKHAIL T.
core +1 more source
Геодинамика и тектонофизика, 2017 There are several geodynamic models of the Central Asian Orogenic Belt (CAOB) development [Şengör et al., 1993, Zorin, 1999; Parfenov et al., 1999, 2003; Willem et al., 2012; and others].
S. I. Dril +6 more
doaj +1 more source
Записки Горного института, 2022 The geological structure, structural relations with the underlying complexes, mineral composition, age and origin of sedimentary-volcanogenic and intrusive formations of the Chamberlain valley area (northern part of the Wedel Jarlsberg Land, Svalbard ...
Aleksandr N. Sirotkin +1 more
doaj +1 more source
Advances in Geology, Volume 2015, Issue 1, 2015., 2015 In the different varieties of crystalline basement of Archean and Proterozoic age and in Vendian (Ediacaran) basal layers of platform coverture in the Central Basin of the Dniester River were found relatively high concentrations of Lanthanum, Cerium, Yttrium, Ytterbium, and Scandium.
Aurelia Popuiac, Giovanni Martinelli
wiley +1 more source
Nature of zircon clastics in the Riphean and Vendian sandstones of the Southern Urals [PDF]
, 2019 New age dates of detrital zircons of terrigenous rocks augmented the possibilities of interpretation of their provenance. Unfortunately this interpretation is restricted by a formal comparison of age-and-composition characteristics of detrital crystals ...
S.V. Busharina +3 more
core +1 more source
International Journal of Oceanography, Volume 2011, Issue 1, 2011., 2011 In Yanshan, located in the northern part of North China, Mesoproterozoic carbonate sequences (1.6–1.4 Ga) form a 10, 000 m thick succession in an aulacogen basin. Carbon and oxygen isotope (δ13O and δ18O, resp.) data were obtained from 110 carbonate samples across three sections of these Mesoproterozoic deposits. From the early to late Mesoproterozoic,
Kuang Hongwei +6 more
wiley +1 more source