Results 101 to 110 of about 24,344 (266)

Suevite superposition on the Bunte breccia in Noerdlinger Ries, Germany: New findings on the transport mechanism of impactites [PDF]

Research undertaken in the last decades in Noerdlinger Ries, Germany, has repeatedly emphasized the sharp contact between Bunte breccia and suevite. However, extensive investigations into this layer boundary have not yet been possible due to insufficient
Bringemeier, D.
core   +1 more source

Disentangling palaeoecological and outcrop controls on MISS occurrence in c. 1 Ga fluvio‐lacustrine facies of the Diabaig Formation, Scotland

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, Neil S. Davies, William J. McMahon   +2 more
wiley   +1 more source

THE ALUMINOUS GNEISSES OF KOLA SERIES, BALTIC SHIELD (GEOCHEMISTRY, NATURE AND AGE OF PROTOLITH)

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
The geochemical and isotopic data were obtained for gneisses of the Kola Series, Baltic Shield. They are metamorphosed in granulite facies and interpreted according to the igneous nature of zircons and gneisses.
Татьяна Анатольевна Мыскова, Раиса Ивановна Милькевич, Tatiana Myskova, Raisa Milkevich   +3 more
doaj   +1 more source

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, EarlyView.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source

Provenance and uranium source of the lower cretaceous sedimentary rocks in Northern Sichuan Basin: evidence from sedimentary facies analysis and detrital zircon U-Pb geochronology

Journal of Asian Earth Sciences: X
In this paper, we present results of sedimentary facies analysis and U-Pb dating of detrital zircons from the Lower Cretaceous uranium-bearing sandstones in northern Sichuan Basin, to investigate the influence of provenance and sedimentation process on ...
Wen-hao Li, De-ru Xu, Jia-bao Yang, Qiu-shuang Fan, Zhao-kun Yan, Cheng-yong Zhang, Zeng-hua Li   +6 more
doaj   +1 more source

Sedimentology of silica granules and haematite in the 3.47 Ga Antarctic Creek Member, Mount Ada Basalt, Western Australia

Sedimentology, EarlyView.
ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
wiley   +1 more source

The polyphase Belokurikhinsky granite massif, Gorny Altai: isotope-geochemical study of zircon

Записки Горного института
Based on the isotopic-geochemical analyses of zircons from granites of the Belokurikhinsky massif in the Gorny Altai using the U-Pb method, the ages of three intrusion phases have been determined for the first time: the age of the first phase refers to ...
Sergey G. Skublov, Ekaterina V. Levashova, Maria E. Mamykina, Nikolay I. Gusev, Anatoliy I. Gusev   +4 more
doaj  

Source‐to‐sink sediment transport reversals during glacial sea‐level lowstands sustain soil formation on pericoastal carbonate terrains

Sedimentology, EarlyView.
ABSTRACT Understanding the processes that drive soil formation is crucial for developing sustainable land‐use strategies, as changing land‐use practices and climate change exacerbate soil erosion. The formation of substantial arable soils on carbonate bedrock requires substantial dust accretion as the underlying bedrock lacks siliciclastic material. In
Daniel Palchan, Yael Jacobi Glass, Olga Berlin, Yoav Ben Dor   +3 more
wiley   +1 more source

Quantifying structural damage from self-irradiation in a plutonium superconductor

, 2006
The 18.5 K superconductor PuCoGa5 has many unusual properties, including those due to damage induced by self-irradiation. The superconducting transition temperature decreases sharply with time, suggesting a radiation-induced Frenkel defect concentration ...
A. R. Sweedler, C. H. Booth, C. H. Booth, E. D. Bauer, F. Jutier, J. L. Sarrao, J. N. Mitchell, L. A. Morales, M. Daniel, P. G. Allen, R. E. Wilson, W. G. Wolfer   +11 more
core   +1 more source

Ductile Extrusion Triggered by Continental Collision in NE Brazil

Terra Nova, EarlyView.
ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser, C. E. Ganade, C. R. Cioffi, J. B. Forshaw, M. Hueck, E. Celis, M. A. S. Basei   +6 more
wiley   +1 more source