Anna Losiak

Anna Losiak
Polish Academy of Sciences | PAN · Institute of Geological Sciences

PhD

About

70
Publications
12,680
Reads
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338
Citations
Citations since 2017
10 Research Items
229 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Additional affiliations
October 2017 - present
University of Exeter
Position
  • Fellow
October 2013 - present
Polish Academy of Sciences
Position
  • PostDoc Position
March 2010 - June 2013
University of Vienna
Position
  • Researcher - doctoral student
Education
March 2010 - June 2013
University of Vienna
Field of study
  • Geology
August 2007 - May 2009
Michigan State University
Field of study
  • Geology, meteoritics
October 2004 - July 2007
University of Warsaw
Field of study
  • Geomorphology and Sedimentology

Publications

Publications (70)
Article
Full-text available
The Bosumtwi crater is 10.5 km in diameter, 1.07 Ma old, well preserved impact structure located in Ghana (centered at 06°30′N, 01°25′W). It was excavated in rocks of the Early Proterozoic Birimian Supergroup, part of the West African craton. Here, we present a full and detailed characterization of the three granitoid complexes and one mafic dike i...
Article
Abstract– Planar deformation features (PDFs) in quartz, one of the most commonly used diagnostic indicators of shock metamorphism, are planes of amorphous material that follow crystallographic orientations, and can thus be distinguished from non-shock-induced fractures in quartz. The process of indexing data for PDFs from universal-stage measuremen...
Article
Abstract– Weathering of meteorites at the scale of the entire Antarctic Search for Meteorites program population is studied by analyzing the recent version of the online Antarctic meteorite classification database that includes information about 15,263 meteorites. This paper updates, supplements, and expands on the last Antarctic meteorite weatheri...
Article
Full-text available
The frequency of crater-producing asteroid impacts on Earth is not known. Of the predicted Holocene asteroid impact craters of <200 m diameter, only ~30% have been located. Until now there has been no way to distinguish them from “normal” terrestrial structures unless pieces of iron meteorites were found nearby. We show that the reflective properti...
Article
Full-text available
Over the past few decades, it has become increasingly clear that the impact of interplanetary bodies on other planetary bodies is one of the most ubiquitous and important geological processes in the Solar System. This impact process has played a fundamental role throughout the history of the Earth and other planetary bodies, resulting in both destr...
Conference Paper
NASA’s Double Asteroid Redirection Test (DART) will impact the smaller component of the 65803 Didymos asteroid system, Dimorphos, and alter its orbital period around the primary, thus demonstrating the controlled deflection capabilities of near-Earth asteroids. ESA’s Hera mission will arrive at Dimorphos several years after the DART impact and prov...
Conference Paper
Full-text available
The Double Asteroid Redirection Test (DART) plans to impact the smaller component of the 65803 Didymos asteroid system, Dimorphos, and alter the binary orbit period of the system. The experiment aims to demonstrate the controlled deflection capabilities of a near-Earth asteroid. ESA’s Hera mission will arrive at Dimorphos four years after the DART...
Conference Paper
Full-text available
Analog missions are a unique opportunity to test methods and equipment in the field on Earth before they are used in space. AMADEE-20 is a Mars analog simulation in Negev Desert, Israel, managed by the Austrian Space Forum similar to the previous missions (Morocco2013 Groemer et al. 2014, Oman2018 Groemer et al. 2019). The test site is located with...
Article
Full-text available
The Ilumetsa site, in Estonia, consists of two round, rimmed structures that are 725 m apart. The structures are listed as proven impact craters in the Impact Earth database, despite lack of commonly accepted, unequivocal proof of extraterrestrial collision identified at this location. We excavated trenches though the Ilumetsa Large and Ilumetsa Sm...
Conference Paper
Full-text available
Two Ilumetsa craters are listed as a proven meteorite impact site in the Earth Impact Database, but neither remnants of the projectile nor other identification criteria (e.g., PDFs) have been found up to this point [1]. Also, until now, the temporal relation between two Ilumetsa craters has not been established, as only larger structure was dated b...
Article
The increased volume, spatial resolution, and areal coverage of high-resolution images of Mars over the past 15 years have led to an increased quantity and variety of small-scale landform identifications. Though many such landforms are too small to represent individually on regional-scale maps, determining their presence or absence across large are...
Article
Full-text available
Early thermal history of Rhea is investigated. The role of the following parameters of the model is investigated: time of beginning of accretion, tini, duration of accretion, tac, viscosity of ice close to the melting point, η0, activation energy in the formula for viscosity, E, thermal conductivity of silicate component, ksil, ammonia content, XNH...
Article
We report on the AMADEE-15 mission, a 12-day Mars analog field test at the Kaunertal Glacier in Austria. Eleven experiments were conducted by a field crew at the test site under simulated martian surface exploration conditions and coordinated by a Mission Support Center in Innsbruck, Austria. The experiments? research fields encompassed geology, hu...
Article
Full-text available
Planar deformation features (PDFs) in quartz are the most important diagnostic features that allow the unambiguous identification of impact structures on Earth. In order to confirm that these features (that are characterized by planar character and form along specific crystallographic planes) are indeed PDFs, they need to be properly investigated a...
Article
Full-text available
The estimates of the age of the Kaali impact structure (Saaremaa Island, Estonia) provided by different authors vary by as much as 6000 years, ranging from ~6400 to ~400 before current era (BCE). In this study, a new age is obtained based on 14C dating charred plant material within the proximal ejecta blanket, which makes it directly related to the...
Conference Paper
Full-text available
Introduction: The Kaali Main Impact Crater is a small (110m diameter), well-preserved crater located on the island of Saaremaa, Estonia (58.37°N, 22.67°E) [1, 2]. It is an important crater to study the effects of small asteroidal impacts on terrestrial planets, as it lies near the transition between strength and gravity dominated crater morphologie...
Conference Paper
Full-text available
Introduction: Many young landforms in mid-and high-latitudes on Mars are thought to be related to ice [1], but their exact distribution and origin are still poorly understood. In an attempt to determine their extent and identify possible spatial relationships and genetic links between them, we mapped their distribution across a N-S traverse across...
Conference Paper
Full-text available
Introduction: An International Space Science Institute (ISSI) team project has been convened to study the northern plains of Mars. It uses geomorphological mapping to compare ice-related landforms in the three northern plains basins: Acidalia Planitia, Arcadia Planitia, and Utopia Planitia. The main science questions this project aims to answer are...
Article
During the warmest days of summer, water-ice located below a dust particle lying on the equatorial-facing slopes of the martian north polar cap can be melted.
Conference Paper
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Grid mapping provides a new, efficient and scalable approach to collecting data on large quantities of small landforms over large areas.
Article
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We report on the MARS2013 mission, a 4-week Mars analog field test in the northern Sahara. Nineteen experiments were conducted by a field crew in Morocco under simulated martian surface exploration conditions , supervised by a Mission Support Center in Innsbruck, Austria. A Remote Science Support team analyzed field data in near real time, providin...
Article
Full-text available
We have developed a portable dual-wavelength laser fluorescence spectrometer as part of a multi-instrument optical probe to characterize mineral, organic, and microbial species in extreme environments. Operating at 405 and 532 nm, the instrument was originally designed for use by human explorers to produce a laser-induced fluorescence emission (L.I...
Article
Full-text available
Martian caves are regarded as one of the most interesting locations in which to search for life on the planet. Data obtained during the MARS2013 expedition at Hamar Laghdad Ridge in the Tafilalt region of Morocco indicate that even small cavities can display thermal behavior that is characteristic for caves. For example, temperature in a cavity equ...
Article
Full-text available
Abstract We report on the MARS2013 mission, a 4-week Mars analog field test in the northern Sahara. Nineteen experiments were conducted by a field crew in Morocco under simulated martian surface exploration conditions, supervised by a Mission Support Center in Innsbruck, Austria. A Remote Science Support team analyzed field data in near real time,...
Article
Full-text available
Abstract MARS2013 was an integrated Mars analog field simulation in eastern Morocco performed by the Austrian Space Forum between February 1 and 28, 2013. The purpose of this paper is to discuss the system of data processing and utilization adopted by the Remote Science Support (RSS) team during this mission. The RSS team procedures were designed t...
Article
Full-text available
Rocks from drill cores LB-07A (crater fill) and LB-08A (central uplift) into the Bosumtwi impact crater, Ghana, were analyzed for the presence of the cosmogenic radionuclide 10Be. The aim of the study was to determine the extent to which target rocks of various depths were mixed during the formation of the crater-filling breccia, and also to detect...
Article
The study of meteorite craters on Earth provides information about the dynamic evolution of bodies within the Solar System. Bosumtwi crater is a well studied, 10.5 km in diameter, ca. 1.07 Ma old impact structure located in Ghana. The impactor was �1 km in diameter, an ordinary chondrite and struck the Earth with an angle between 30� and 45� from t...
Conference Paper
Full-text available
In February 2013, the MARS2013 Mission was conducted by the Austrian Space Forum in partnership with the Ibn Battuta Center in Marrakesh. MARS2013 was an integrated Mars analogue field simulation during which a small field crew conducted various experiments in the Moroccan desert directed by a Mission Support Centre in Austria. It served as a platf...
Article
Full-text available
Introduction: According to the current understanding of meteorite impact processes, surface target material is transported from a crater in the form of ejecta or is vaporized/melted (e.g., [1]). The formation model of tektites from the surface of the target rocks has been established using the 10Be content of tektites (e.g., [2]), and chemical comp...
Article
Rhea is a medium sized icy satellite (MIS) of Saturn. It is built of mixtures of rocks and ices. The rocky component is believed to be of chondritic composition. The main component of ices is frozen H2O. Initially Rhea was built from a homogenous mixture of those two components. After accretion the temperature of the satellites increased that allow...
Article
The MARS2013 mission: The Austrian Space Forum together with multiple scientific partners will conduct a Mars analog field simulation. The project takes place between 1st and 28th of February 2013 in the northern Sahara near Erfoud. During the simulation a field crew (consisting of suited analog astronauts and a support team) will conduct several e...
Article
The abstract discusses problems related to using PDFs to estimate the average shock pressure in heterogeneous, multi-mineral, multi-grain, and porous samples.
Article
The aim of this study is to check if surface-derived material is present in suevitic breccias to better understand formation mechanisms of fallback breccias.
Article
Full-text available
The Karakul depression in the Pamir is a controversial structure and could be a large (50 km) and young impact crater. We present the preliminary results of a sampling campaign that took place in June 2011, which tends to confirm the impact origin.
Article
Full-text available
The well preserved Bosumtwi crater (Ghana), 10.5 km in diameter and 1.07 Myr old (e.g., Koeberl and Reimold 2005), was excavated in rocks of the Early Proterozoic Birimian Supergroup. These rocks were deposited 2.1-2.15 Gyr ago in a volcanic arc environment and were metamorphosed to greenschist facies during the Eburnean tectono-thermal event (e.g....
Article
A fascinating controversy has been recently renewed about the origin of the Karakul depression in the Pamir (Tajikistan, 39°1'N, 73°27'E), about 4000 m above sea level. Based on the work of E. Gurov reporting breccia and shock features in minerals, the circular depression was mentioned in the Earth Impact Database as one of the largest complex crat...
Conference Paper
Full-text available
New details are uncovered about the overturning and emplacement of impact ejecta at the classic impact site: Meteor Crater.
Conference Paper
Eighty meters of ejected material was sheared from the rim of Meteor Crater and deposited at greater distances, which explains the asymmetry of ejecta around the crater.
Article
Full-text available
We present preliminary results of a study on the variation of combinations of PDF orientations in quartz grains. PDF orientations within the studied samples reflect the symmetry of alpha-quartz, but it appears as if some quartz grains were of beta-quartz type when the PDFs formed.
Article
Here, we present a web-based program for indexing PDFs that also allows for analysis of azimuthal angles between PDFs in a given quartz grain.
Article
A mathematical method of indexing planar deformation features in quartz and a Microsoft Excel macro for automated indexing is presented, allowing for more rapid and accurate results than the previously used manual method.
Article
Denticulated margins (also known in older literature as “sawtooth,” “cockscomb,” or “hacksaw” terminations) are a common feature of pyroxenes and amphiboles, visible in optical and electron microscopes. Denticles are remnants of undissolved material that formerly constituted the walls between elongate etch pits, the characteristic aqueous-dissoluti...
Article
Denticulated margins (also known in older literature as "sawtooth," "cockscomb," or "hacksaw" terminations) are a common feature of pyroxenes and amphiboles, visible in optical and electron microscopes. Denticles are remnants of undissolved material that formerly constituted the walls between elongate etch pits, the characteristic aqueous-dissoluti...
Article
The Schrödinger Basin provides a diverse suite of scientific opportunities because of the superposition of several geologic processes and because of its relatively young age. Three possible landing sites were evaluated for human exploration.
Article
The aim of this paper is to research influence of geographic location of meteorite-bearing ice fields on evaporite occurrence.
Article
Full-text available
The aim of this abstract is to describe a new database of lunar impact craters which integrates information concerning the locations and ages of craters, as well as various measured and calculated physical characteristics.
Article
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Dimensions of plagioclase (An65) crystals in a polished thin section of naturally weathered 3400 y old Hawaiian basalt were measured by scanning electron microscopy (in backscattered electron imaging mode). The three-dimensional shape, size, volume and surface area of the plagioclase crystals were then estimated using the method of Morgan and Jerra...
Article
Full-text available
3) Natural History Museum, Burgring 7, A-1010 Vienna, Austria. Planar deformation features (PDFs) are sets of parallel planes of amorphous material, less than 2 µm thick and spaced 2-10 µm apart, which form in minerals due to shock metamorphism (e.g., Stöffler and Langenhorst, 1994). PDFs, generally multiple sets per grain, are predominantly develo...

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