Results 71 to 80 of about 51,695 (270)

Unusual, basin-scale, fluid–rock interaction in the Palaeoproterozoic Onega basin from Fennoscandia : Preservation in calcite δ18O of an ancient high geothermal gradient [PDF]

, 2016
Acknowledgements We acknowledge financial support from ICDP for the drilling programme. AEF, ATB and ARP thank NERC for financial support through NE/G00398X/1. VAM thanks the Norwegian Research Council for financial support through 191530/V30.
Brasier, A. T., Fallick, A. E., Melezhik, V. A., Prave, A. R.   +3 more
core   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source

Gold and other impurity elements in pyrite from the Berezovskoe deposit in the Middle Urals

Литосфера, 2019
Research subject. In this work, we investigated the crystals of pyrite, one of the key gold-bearing minerals, from the Berezovskoe (the Middle Urals) deposit using modern research approaches.Materials and methods.
N. V. Sidorova, I. V. Vikent’ev, V. D. Abramova, E. V. Koval’chuk   +3 more
doaj   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Methodological Aspects of Predictive Mineragenic Studies Using Earth Remote Sensing Data

Russian Journal of Earth Sciences
The article considers methodological aspects of allocation and substantiation of exploration areas for scarce types of ore minerals taking into account the concept of of mineral systems and using Earth remote sensing data with the application of ...
Petrov Vladislav, Ustinov Stepan, Minaev Vasilii   +2 more
doaj   +1 more source

Interpretation of Lineaments Within the Western Part of the Baikal-Patom Belt Using a Multiscale Tectonophysical Approach in the Context of Ore-Forming Systems Prediction

Georesursy
In the article, using the territory of the western part of the Baikal-Patom belt as an example, an author’s approach to the automatic extraction of lineaments reflecting various scale levels of the development of the fault network framework is proposed ...
S. A. Ustinov, V. A. Petrov, A. A. Andreev, A. D. Svecherevsky, I. A. Kochkin, V. V. Shukhov   +5 more
doaj   +1 more source

Lithogenesis on peneplaned сontinented platform of Kazakhstan and Siberia during the Cretaceous-Paleogene boundary epoch

Литосфера, 2019
Research subject. The inner structure, composition, and genesis of the poorly studied formation of weathering crusts are studied with reference to peneplaned platform territories in Kazakhstan and Siberia during the Cretaceous-Paleogene boundary epoch ...
Yu. G. Tsekhovskii, В. А. Bogatyrev, V. V. Zhukov   +2 more
doaj   +1 more source

Initial results for the composition of the igneous basement of the Bowers and Shirshov Ridges (Bering Sea, NW Pacific) [PDF]

, 2010
The Bowers and Shirshov Ridges (hereafter BR and SR, respectively) are two prominent submarine structures of unknown age and provenance in the Bering Sea.
Hauff, Folkmar, Hoernle, Kaj, Portnyagin, Maxim, Wanke, Maren, Werner, Reinhard   +4 more
core  

A Prehispanic Maya Pit Oven? Microanalysis of Fired Clay Balls from the Puuc Region, Yucatán, Mexico [PDF]

, 2013
This is a postprint (author's final draft) version of an article published in Journal of Archaeological Science in 2013. The final version of this article may be found at http://dx.doi.org/10.1016/j.jas.2012.10.014 (login may be required).
Berna, Francesco, Bey, George J., III, Simms, Stephanie R.   +2 more
core   +2 more sources

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source