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Problematyczność identyfikacji impaktu na podstawie geologicznych mikrośladów

100%
Brachaniec T., Broszkiewicz A.
Acta Societatis Metheoriticae Polonorum
|
2013
|
vol. 4
28-36
EN
Geological record contains macro and micro traces of the impacts. Macro traces are much easier to interpretation and diagnosis. Undisputed micro evidences of the impact are platinum group element anomalies and shock minerals. In the proximal parts of strewnfield may occur spherules, iron spinels, fullerenes or even deformed fossils. Nevertheless, due to problematic in the recognition and determine the origin does not qualify them as clear evidences of the impact.
2
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Migracja żelaza w indochinicie podczas jego wygrzewania w 1100°C: badania EMPA i XRD

81%
Brachaniec T., Szopa K., Krzykawski T., Broszkiewicz A.
Acta Societatis Metheoriticae Polonorum
|
2014
|
vol. 5
47-51
EN
Iron reach tektite represented by indochinite was examined by using EMP and XRD after 120 min long heating in oxide atmosphere at 1100°C. The electron microprobe analyses as well as BSE images reveal loss of iron in tektite bulk composition. Iron as a element was incorporated into a new, probable mineral phase that is mostly present on the surface of the indochinite. Size and textural relation of the Fe-rich phase does not permit to analize it. XRD data does not reveal presence of any mineral rich in Fe including metallic iron.
3
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Trynityt – wstępne dane SEM oraz XRD szkliwa nuklearnego z USA

81%
Brachaniec T., Szopa K., Krzykawski T., Broszkiewicz A.
Acta Societatis Metheoriticae Polonorum
|
2015
|
vol. 6
38-41
EN
Trinitite is a glass produced as a result of a nuclear explosion. The characteristic feature of the investigated material are bubbles and presence of incompletely melted quartz grains.
4
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Powstawanie kraterów impaktowych i ich rodzaje

81%
Brachaniec T., Tymiński Z., Broszkiewicz A.
Acta Societatis Metheoriticae Polonorum
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2014
|
vol. 5
30-46
EN
Craters form after meteoroid or asteroid impact son celestial bodies surface are created during three different periods: contact/compression, excavation and modification stage. Depending on its size the craters can be divided into three main types: simple, complex and multi-ring craters. The enormous energy released during the impact forms evident records in basis as shatter cones or breccias and affect the surrounding rock (visible only in micro scale) by shock metamorphism, which has no equivalent in the Earth’s geological processes.
5
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Topliwość tektytów

71%
Brachaniec T., Szopa K., Krzykawski T., Broszkiewicz A., Szczyrba M.
Acta Societatis Metheoriticae Polonorum
|
2014
|
vol. 5
21-24
EN
In this paper, results of melting experiment of tektites are presented. Tektites from four strewnfields: North American, Central European, Ivory Coast and Australasian were used. The fragments of investigated tektites were heated in oxide atmosphere in 1100oC in two time intervals: 5 and 120 minutes. The temperature of 1100oC is too low for completely melting of the studied material despite to heating in the same conditions but in small area (eg. in a spot).
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