Plume Magmatism at Franz Josef Land

Petrology ◽  
2021 ◽  
Vol 29 (5) ◽  
pp. 528-560
Author(s):  
Yu. V. Karyakin ◽  
E. V. Sklyarov ◽  
A. V. Travin
Keyword(s):  
Franz Josef Land ◽  
Plume Magmatism

New cryptogamic records. 3

2019 ◽  
Vol 53 (1) ◽  
pp. 181-197 ◽  
Author(s):  
O. M. Afonina ◽  
V. A. Boldyrev ◽  
G. Ya. Doroshina ◽  
V. E. Fedosov ◽  
G. N. Ganasevich ◽  
...  
Keyword(s):  
Saratov Region ◽  
Magadan Region ◽  
Franz Josef Land ◽  
Khanty Mansi Autonomous

First records of lichens for the Saratov Region, of mosses for the Franz Josef Land Archipelago, the republics of Karelia and Khakassia, Stavropol, Khabarovsk and Kamchatka Territories, Khanty-Mansi Autonomous Area – Yugra, Magadan Region and first records of liverworts for the Tula Region are presented. Data on localities, habitats, distribution of recorded species are provided.

The geochemical characteristics of the Jurassic plume magmatism within Ahlmannryggen massif (Queen Maud Land, East Antarctica)

2019 ◽  
Vol 486 (1) ◽  
pp. 98-102
Author(s):  
N. M. Sushchevskaya ◽  
B. V. Belyatsky ◽  
G. L. Leitchenkov ◽  
V. G. Batanova ◽  
A. V. Sobolev
Keyword(s):  
Mantle Peridotite ◽  
Oceanic Lithosphere ◽  
East Antarctica ◽  
Geochemical Characteristics ◽  
Mantle Melting ◽  
Plume Magmatism

Mesozoic dikes associated with the Karoo plume were studied within the East Antarctica where at Queen Maud Land on the Almannryggen massif high-Ti magnesian Fe-basalts were found. It is assumed that such basalts originate by means of the pyroxenite-containing mantle melting. The isotopic characteristics of the studied dolerites reflect the composition of the pyroxenite source - the ancient oceanic lithosphere (ЕМI), submerged at the mantle depths of 150-170 km in the paleosubduction zone of the Gondwanian continent and transformed 180 m.y. ago into the pyroxenite melt when interacting with the plume mantle peridotite.

New K-Ar Ages for Basalts from Franz Josef Land

2001 ◽  
Vol 3 (1) ◽  
pp. 79-82 ◽  
Author(s):  
A. F. Grachev ◽  
M. M. Arakelyantz ◽  
V. A. Lebedev ◽  
E. E Musatov ◽  
N. M. Stolbov
Keyword(s):  
Franz Josef Land

U–Pb geochronology of Cretaceous magmatism on Svalbard and Franz Josef Land, Barents Sea Large Igneous Province

2013 ◽  
Vol 150 (6) ◽  
pp. 1127-1135 ◽  
Author(s):  
FERNANDO CORFU ◽  
STÉPHANE POLTEAU ◽  
SVERRE PLANKE ◽  
JAN INGE FALEIDE ◽  
HENRIK SVENSEN ◽  
...  
Keyword(s):  
Thermal Ionization Mass Spectrometry ◽  
Barents Sea ◽  
Large Igneous Province ◽  
The Arctic ◽  
Ionization Mass ◽  
Franz Josef Land ◽  
Igneous Province ◽  
Stratigraphic Record ◽  
Single Grain ◽  
Cretaceous Magmatism

AbstractThe opening of the Arctic oceanic basins in the Mesozoic and Cenozoic proceeded in steps, with episodes of magmatism and sedimentation marking specific stages in this development. In addition to the stratigraphic record provided by sediments and fossils, the intrusive and extrusive rocks yield important information on this evolution. This study has determined the ages of mafic sills and a felsic tuff in Svalbard and Franz Josef Land using the isotope dilution thermal ionization mass spectrometry (ID-TIMS) U–Pb method on zircon, baddeleyite, titanite and rutile. The results indicate crystallization of the Diabasodden sill at 124.5 ± 0.2 Ma and the Linnévatn sill at 124.7 ± 0.3 Ma, the latter also containing slightly younger secondary titanite with an age of 123.9 ± 0.3 Ma. A bentonite in the Helvetiafjellet Formation, also on Svalbard, has an age of 123.3 ± 0.2 Ma. Zircon in mafic sills intersected by drill cores in Franz Josef Land indicate an age of 122.7 Ma for a thick sill on Severnaya Island and a single grain age of ≥122.2 ± 1.1 Ma for a thinner sill on Nagurskaya Island. These data emphasize the importance and relatively short-lived nature of the Cretaceous magmatic event in the region.

The Circumnavigation of Franz Josef Land

1933 ◽  
Vol 23 (3) ◽  
pp. 394 ◽  
Author(s):  
N. N. Zubov
Keyword(s):  
Franz Josef Land

scholarly journals Metagenomic and satellite analyses of red snow in the Russian Arctic

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1491 ◽  
Author(s):  
Nao Hisakawa ◽  
Steven D. Quistad ◽  
Eric R. Hester ◽  
Daria Martynova ◽  
Heather Maughan ◽  
...  
Keyword(s):  
Image Analysis ◽  
Dna Analysis ◽  
Satellite Image ◽  
Polar Regions ◽  
Russian Arctic ◽  
Metagenomic Dna ◽  
Satellite Imaging ◽  
Franz Josef Land ◽  
Satellite Image Analysis ◽  
Snow And Ice

Cryophilic algae thrive in liquid water within snow and ice in alpine and polar regions worldwide. Blooms of these algae lower albedo (reflection of sunlight), thereby altering melting patterns (Kohshima, Seko & Yoshimura, 1993; Lutz et al., 2014; Thomas & Duval, 1995). Here metagenomic DNA analysis and satellite imaging were used to investigate red snow in Franz Josef Land in the Russian Arctic. Franz Josef Land red snow metagenomes confirmed that the communities are composed of the autotrophChlamydomonas nivalisthat is supporting a complex viral and heterotrophic bacterial community. Comparisons with white snow communities from other sites suggest that white snow and ice are initially colonized by fungal-dominated communities and then succeeded by the more complexC. nivalis-heterotroph red snow. Satellite image analysis showed that red snow covers up to 80% of the surface of snow and ice fields in Franz Josef Land and globally. Together these results show thatC. nivalissupports a local food web that is on the rise as temperatures warm, with potential widespread impacts on alpine and polar environments worldwide.

scholarly journals Operational algorithm for ice/water classification on dual-polarized RADARSAT-2 images

2016 ◽  
Author(s):  
Natalia Zakhvatkina ◽  
Anton Korosov ◽  
Stefan Muckenhuber ◽  
Stein Sandven ◽  
Mohamed Babiker
Keyword(s):  
Sea Ice ◽  
Texture Features ◽  
Open Water ◽  
Support Vector ◽  
Technical Problems ◽  
Additional Information ◽  
Franz Josef Land ◽  
Water Classification ◽  
Dual Polarized ◽  
Supervised Image Classification

Abstract. Synthetic aperture radar (SAR) data from RADARSAT-2 (RS2) taken in dual-polarization mode provide additional information for discriminating sea ice and open water compared to single-polarization data. We have developed a fully automatic algorithm to distinguish between open water (rough/calm) and sea ice based on dual-polarized RS2 SAR images. Several technical problems inherent in RS2 data were solved on the pre-processing stage including thermal noise reduction in HV-polarization channel and correction of angular backscatter dependency on HH-polarization. Texture features are used as additional information for supervised image classification based on Support Vector Machines (SVM) approach. The main regions of interest are the ice-covered seas between Greenland and Franz Josef Land. The algorithm has been trained using 24 RS2 scenes acquired during winter months in 2011 and 2012, and validated against the manually derived ice chart product from the Norwegian Meteorological Institute. Between 2013 and 2015, 2705 RS2 scenes have been utilised for validation and the average classification accuracy has been found to be 91 ± 4 %.

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