Wyniki wyszukiwania - BazTech

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Pomiary szczelności powłok emalierskich na powierzchniach wewnętrznych zbiorników

Barmuta P., Dziedzic H., Chomczyk R., Pytel P.

Wiadomości Elektrotechniczne

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2011

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R. 79, nr 4

46-47

PL

Omówiono metody badań szczelności powłok emalierskich na powierzchniach wewnętrznych zbiorników.

EN

The authors discuss methods for testing density of enamel coating on internal surfaces of tanks.

2

Genetic relationships between metabasalts and related gabbroic rocks: an example from the Fore-Sudetic Block, SW Poland

Dziedzic K., Dziedzic H.

Geologia Sudetica

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2000

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Vol. 33, nr 1

33-48

EN

The metabasalts occurring within the gneisses of the eastern part of the Góry Sowie gneiss block, have either enriched or depleted LREE patterns. However, these two types of metabasic rock are indistinguishable in terms of their major elements and many trace elements. Their intimate association indicates that their parent magmas erupted nearly contemporaneously. They originated through the decompressional, two-stage incremental melting of a mantle diapir source. The LRRE enriched variety of the basalts was formed from a spinel/garnet peridotite melt mixture which was followed by spinel peridotite melts. From the latter melts, cumulate gabbros crystallized and extracted portions of these melts provided the LRRE depleted variety of basalts. This strongly suggests that the metabasalts are compatible in age with the gabbros. Both of the metabasalts varieties developed mainly by AFC processes involving mantle source melts and lower continental crust components. From a comparison of these metabasalts with those in adjacent areas, it is possible to draw the conclusion that volcanic activity in the whole region had the same time-span. The metabasalts were metamorphosed to LP hornblende granulites, synchronously with the surrounding amphibolite facies gneisses of the margins of the Góry Sowie Block, which were metamorphosed to LP-HT cordierite gneisses. They originated due to the transition from high-grade amphibolite to granulite facies conditions associated with a near-isothermal decompression, during the time of the late Variscan (Carboniferous).

3

A review of Rb-Sr isotope patterns in the Carboniferous granitoids of the Sudetes in SW Poland

Kennan P.S., Dziedzic H., Lorens M.W., Mierzejewski M.P.

Geologia Sudetica

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1999

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Vol. 32, nr 1

49-53

EN

Carboniferous granite intrusions are a relatively uncontroversial element in the geological history of the Sudetes in SW Poland. The Sr-isotope systems in these granites show geological scatter indicative of contamination by crustal rock, failure to homogenise during intrusion/crystallisation and inheritance from source. Rb-Sr ages are thus somewhat compromised and imprecise. The granites originated from a relatively primitive source that underlay much of the region in Carboniferous times.