Results 61 to 70 of about 61,505 (248)
Геодинамика и тектонофизика, 2016 Paradoxically, the lists of “proxies” of both plate- and plume-related settings are devoid of even a mention of the high-grade metamorphic rocks (granulite, amphibolite and high-temperature eclogite facies).
M. V. Mints, P. G. Eriksson
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Microbial mats in dinosaur ichnocoenoses
Sedimentology, EarlyView.ABSTRACT Until now, the significance of microbial mats in preservation of dinosaur tracks and in reconstructing the palaeoenvironment in which dinosaurs roamed was rarely studied. Dinosaur tracks are commonly found close to ancient aquatic bodies where moist sediment had once allowed footstep registration.
Nora Noffke +3 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris +9 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT One of the largest wetlands on Earth, the Brazilian Pantanal contains roughly 10 000 natural lakes, about 1000 of which are hypersaline. In these environmentally stressful settings, animal life struggles to survive, while cyanobacteria form extensive mats.
Lucas V. Warren +5 more
wiley +1 more source
, 2011 The Cambrian rocks of Wales mostly lie within the Avalon composite terrane, apart from a small area of Cambrian rocks of the Monian composite terrane that is discussed in Chapter 9.
Molyneux, S.G., Rushton, A.W.A.
core
Sedimentology, EarlyView.ABSTRACT Microbial mats and microbialites are common in modern and ancient saline lacustrine environments and are highly responsive to biological and environmental factors. As such, they represent important sources of high‐resolution environmental data across a wide range of geological time. Nonetheless, interpretation of fossil mats is non‐trivial due
Connor Doyle +6 more
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Sedimentology, EarlyView.ABSTRACT The c. 1 Ga Diabaig Formation of north‐west Scotland preserves diverse lacustrine and fluvial facies and abundant microbial and non‐microbial surficial sedimentary features. 172.6 m of section was logged across seven localities to assess the distribution of microbially induced sedimentary structures (MISS) relative to lithofacies, substrate ...
Seán T. Herron +2 more
wiley +1 more source
Russian Journal of Earth SciencesFor the first time, a study was carried out on the geochemistry of zircon (SIMS method, 2 samples, 20 points) from leucogranites of the Laghman complex, located in the pegmatite-bearing (LCT-type) province of Nuristan (Afghanistan).
Levashova Ekaterina Valer'evna +4 more
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A tale of two microbialites: Stromatolites and microbially induced sedimentary structures
Sedimentology, EarlyView.ABSTRACT Microbialites are biosedimentary structures built by microbial mats. Five microbialite groups are distinguished: stromatolites, thrombolites, dendrolites, leiloites and microbially induced sedimentary structures (MISS). This contribution discusses the two most abundant microbialite groups in marine settings, stromatolites and MISS.
Nora Noffke, Stanley M. Awramik
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Chemical composition of sandstones and paleogeodynamic reconstructions
Литосфера, 2016 The article analyzes the adequacy of compliance on paleogeodynamic nature of Upper Precambrian sedimentary associations - Bashkir meganticlinorium, Kama-Belaya aulacogene and Uchur-Maya region, received by geological methods and by using discriminant ...
A. V. Maslov +3 more
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