Dr. Marina M. Astafieva Profile

Dr. Marina M. Astafieva

at Paleontological Institute

SPIE Involvement:

Author

Proceedings Article | 23 September 2011 Paper

Multicellular algae from lower Proterozoic (2.45 Ga) weathering crusts of the Kola Peninsula

Marina Astafieva, Alexei Rozanov, Richard Hoover

Proceedings Volume 8152, 815205 (2011) https://doi.org/10.1117/12.892453

KEYWORDS: Gallium, Databases, Contamination, Bacteria, Chemical analysis, Bridges, Potassium, Calcium, Iron, Basic research

Read Abstract +

Proceedings Article | 7 September 2010 Paper

Comparative methods of investigating microfossils in ancient Archaean to Lower Proterozoic (AR-PR1) rocks

Marina Astafieva, Alexei Yu. Rozanov, Richard Hoover

Proceedings Volume 7819, 781907 (2010) https://doi.org/10.1117/12.861622

KEYWORDS: Scanning electron microscopy, Crystals, Microscopes, Contamination, Chemical analysis, Electron microscopes, Spherical lenses, Aerospace engineering, Optical microscopy, Microorganisms

Read Abstract +

Proceedings Article | 7 September 2010 Paper

Early Precambrian pillow lavas as habitat for microfossils

Marina Astafieva, Alexei Yu. Rozanov, Maria Bogina, Alexei Chistyakov, Eugene Sharkov, Richard Hoover

Proceedings Volume 7819, 781908 (2010) https://doi.org/10.1117/12.859835

KEYWORDS: Microorganisms, Bacteria, Gallium, Interfaces, Aerospace engineering, Organisms, Crystals, Geology, Mineralogy, Astrobiology

Read Abstract +

Proceedings Article | 11 September 2009 Paper

Fossil microorganisms and formation of Early Precambrian weathering crusts

M. Astafieva, A. Yu. Rozanov, A. Vrevsky, N. Alfimova, V. Matrenichev, R. Hoover

Proceedings Volume 7441, 744107 (2009) https://doi.org/10.1117/12.824535

KEYWORDS: Microorganisms, Minerals, Chemical elements, Bacteria, Quartz, Iron, Climatology, Silicon, Aluminum, Titanium dioxide

Read Abstract +

Proceedings Article | 11 September 2009 Paper

Volcanic glasses as habitat for microfossils: evidence from the early Paleoproterozoic pillow lavas of Karelia and their modern analogues in the Mid-Atlantic Ridge

M. Astafieva, A. Rozanov, E. Sharkov, A. Chistyakov, M. Bogina, R. Hoover

Proceedings Volume 7441, 744104 (2009) https://doi.org/10.1117/12.828469

KEYWORDS: Glasses, Microorganisms, Bacteria, Gallium, Organisms, Silica, Iron, Electron microscopes, Structural health monitoring, Magnesium

Read Abstract +

Proceedings Article | 2 September 2008 Paper

Development of living organisms on the lava-water interface of Palaeoproterozoic Ongeluk lavas of South Africa

M. Astafieva, A. Rozanov, D. Cornell, R. Hoover

Proceedings Volume 7097, 709704 (2008) https://doi.org/10.1117/12.791901

KEYWORDS: Bacteria, Organisms, Microorganisms, Interfaces, Spherical lenses, Metals, Aerospace engineering, Gallium, Scanning electron microscopy, Electron microscopes

Read Abstract +

Proceedings Article | 28 August 2008 Paper

The early Earth and its environments

A. Yu. Rozanov, M. Astafieva, R. Hoover

Proceedings Volume 7097, 709708 (2008) https://doi.org/10.1117/12.791902

KEYWORDS: Bacteria, Microorganisms, Minerals, Organisms, Gallium, Natural surfaces, Oxygen, Spherical lenses, Earth's atmosphere, Aerospace engineering

Read Abstract +

Proceedings Article | 9 October 2007 Paper

Early Proterozoic (2.04 GA) phosphorites of Pechenga Greenstone Belt and their origin

Alexei Yu. Rozanov, Marina Astafieva, Richard Hoover

Proceedings Volume 6694, 669409 (2007) https://doi.org/10.1117/12.726440

KEYWORDS: Bacteria, Sulfur, Gallium, Microorganisms, Oceanography, Scanning electron microscopy, Electron microscopes, Oxygen, Minerals, Oxidation

Read Abstract +

Proceedings Article | 14 September 2006 Paper

Fossil microorganisms in the Archaean

Marina Astafieva, Richard Hoover, Alexei Yu. Rozanov, Alexander Vrevskiy

Proceedings Volume 6309, 630904 (2006) https://doi.org/10.1117/12.681660

KEYWORDS: Microorganisms, Contamination, Bacteria, Electron microscopes, Fungi, Aerospace engineering, Scanning electron microscopy, Silica, Spherical lenses, Optical spheres

Read Abstract +

Proceedings Article | 22 September 2005 Paper

Fossil microorganisms in Archaean deposits of Northern Karelia

M. Astafieva, R. Hoover, A. Rozanov, A. Vrevskiy

Proceedings Volume 5906, 590606 (2005) https://doi.org/10.1117/12.646847

KEYWORDS: Microorganisms, Electron microscopy, Quartz, Aerospace engineering, Geology, Bacteria, Scanning electron microscopy, Electron microscopes, Basic research, Nomenclature

Read Abstract +