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Studia Geologica Polonica vol.
117 (Abstracts)
Studia Geologica Polonica,
117: 7-25.
K-Ar dating of the Miocene
andesite intrusions, Pieniny Mts, West Carpathians, Poland: a supplement
Krzysztof BIRKENMAJER* &
Zoltán PÉCSKAY**
*Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. Senacka 1, 31-002
Kraków, Poland; ndbirken@cyf‑kr.edu.pl
**Institute of Nuclear Research,
Hungarian Academy of Sciences, Bem ter. 18/c, 4001 Debrecen, Hungary; pecskay@moon.atomki.hu
Abstract
Nine sites of the Miocene
andesitic intrusions in the Pieniny Mts, Carpathians (Poland), sampled
in 1999, were K-Ar dated. The dating was carried out on whole rock, groundmass
and monomineral (amphibole) fractions. The present paper completes the
K-Ar age study of andesitic intrusions in the Pieniny Mts, the first part
of which involving 17 sites was published in 1999.
The 1999 samples included
both the 1st phase and the 2nd phase intrusions. The K-Ar ages of the 1st
phase intrusions, 12.5 to 10.8 Ma, fall within the age range (13.5 to 11
Ma) of the majority of andesitic rocks dated previously. A 2nd phase northern
dyke at Mt Wżar (Kluszkowce quarry) yielded the K-Ar whole rock date of
10.8 Ma, the youngest radiometric date recorded from andesitic intrusions
of the Pieniny Mts.
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Studia Geologica Polonica,
117: 27-35.
Early Cretaceous K-Ar age of
a large basalt olistolith at Biała Woda, Pieniny Klippen Belt, West Carpathians,
Poland
Krzysztof BIRKENMAJER* &
Zoltán PÉCSKAY**
*Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. enacka 1, 31-002
Kraków, Poland; ndbirken@cyf‑kr.edu.pl
**Institute of Nuclear research,
Hungarian Academy of Sciences, Bem ter. 18/c, 4001 Debrecen, Hungary; pecskay@moon.atomki.hu
Abstract
K-Ar dating of a large basalt
olistolith, part of the Upper Cretaceous Jarmuta Formation conglomerate,
at Biała Woda, Pieniny Klippen Belt (Western Carpathians), yielded two
K-Ar ages: 110.6 ± 4.2 Ma and 120.3 ± 4.5 Ma, from columnar-jointed, and
platy-jointed parts of the basalt, respectively. The age difference between
these dates might reflect two successive Early Cretaceous volcanic events:
(i) platy-jointed basalt being an older event, and (ii) columnar-jointed
basalt being a younger one.
The basaltic rock discussed
was long believed to represent a Miocene intrusion in the Upper Cretaceous
Jarmuta Formation conglomerates. The first radiometric dating (1987) of
the basalt yielded a K-Ar age of 140 ± 8 Ma (Jurassic-Cretaceous boundary).
The present dating refines the age of the basalt at Early Cretaceous (Aptian-Albian),
thus confirming its position as an olistolith in the Upper Cretaceous conglomerates
of the Pieniny Klippen Belt.
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Studia Geologica Polonica,
117: 37-48.
Inferred fault pattern and reinterpretation
of architecture of the Siroka Javorinska Tectonic Depression, Eastern Tatra
Mts, West Carpathians, Slovakia
Krzysztof BIRKENMAJER
Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. Senacka 1, 31-002
Kraków, Poland; ndbirken@cyf‑kr.edu.pl
Abstract
Reinterpretation of Andrusov’s
(1950), 1:25,000 scale, tectonic map of the Široká Javorinská (PL: Szeroka
Jaworzyńska) Tectonic Depression, Eastern Tatra Mts, allows to distinguish
a number of SSW-NNE-trending faults which cut both the Subtatric and the
Hightatric tectonic units. Recognition of these faults, belonging to the
post-Palaeogene (probably Sarmatian) fault system, have a bearing on correct
interpretation of architecture of the area. Eight Hightatric tectonic units
and five Subtatric tectonic units shown in maps and geological cross-sections,
are based on reinterpretation of the data provided in papers by D. Andrusov,
Z. Kotański and J. Lefeld. Some problems related to interregional correlation
of these units, their age and direction of thrusting are outlined.
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Studia Geologica Polonica,
117: 49-68.
Bajocian age of the Podzamcze
Limestone Formation at Stare Bystre, Pieniny Klippen Belt (Carpathians,
Poland) based on its macrofauna
Krzysztof BIRKENMAJER* &
Ryszard MYCZYŃSKI**
*Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. Senacka 1, 31-002
Kraków, Poland; ndbirken@cyf‑kr.edu.pl
**Institute of Geological
Sciences, Polish Academy of Sciences, ul. Twarda 51/55, 00-818 Warszawa,
Poland; myczyns@twarda.pan.pl
Abstract
Based on ammonites Eurystomiceras
cf. polyhelictum (Böckh, 1881) and Oppelia flexa (Buckman,
1924), bivalves Camptonectes (Camptonectes) cf. laminatus
(Sowerby, 1818) and Bositra buchi (Roemer, 1836), and Laevilamellaptychus,
gr. A, cf. ceratoides (Ooster), a Lower Bajocian age (upper part)
has been determined for the Podzamcze Limestone Formation exposed at Stare
Bystre. This is the westernmost occurrence of the Branisko Succession/Nappe
in the Pieniny Klippen Belt of Poland.
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Studia Geologica Polonica,
117: 69-154.
Biostratygrafia i paleośrodowisko
paleogenu Podhala w świetle badań palinologicznych. Część I
[Biostratigraphy and palaeoenvironment
of the Podhale Palaeogene (Inner Carpathians, Poland) in the light of palynological
studies Part I]
Przemysław GEDL
Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. Senacka 1, 31-002
Kraków, Poland; ndgedl@cyf‑kr.edu.pl
Streszczenie
Analiza palinologiczna pozwoliła
na określenie wieku fliszu podhalańskiego oraz odtworzenie warunków jego
powstania. Stwierdzono obecność ponad 150 taksonów dinocyst: wystepują
one najliczniej w “warstwach” szaflarskich oraz ostryskich. Zaproponowano
cztery lokalne zony dinocystowe: Chiropteridium lobospinosum (“warstwy”
szaflarskie), Wetzeliella sp. A (“warstwy” zakopiańskie, chochołowskie
i najniższa część “warstw” ostryskich), Distatodinium biffi (“warstwy”
ostryskie) oraz Glaphyrocysta sp. A (“warstwy” ostryskie i “warstwy” z
Brzegów). Wiek fliszu podhalańskiego na podstawie dinocyst określono na
oligocen.
Rozkład palinofacji wskazuje
na obecność lądu w północnej (dzisiejszej) części basenu podhalańskiego,
dostarczającego materiał klastyczny w trakcie sedymentacji “warstw” szaflarskich
i zakopiańskich. W czasie sedymentacji “warstw” zakopiańskich uaktywniło
się źródło zachodnie, dominujące w dalszych etapach rozwoju basenu. Paleogegrafia
basenu podhalańskiego miała duży wpływ na rozwój fitoplanktonu morskiego:
dostawy wody słodkiej powodowały częściowy spadek zasolenia wód powierzchniowych
oraz ich eutrofizację. Strefy przybrzeżne zamieszkane były przez taksony
charakterystyczne dla środowisk płytkowodnych lub o podwyższonym zasoleniu.
Płytkowodne zespoły dinocyst dominują w “warstwach” szaflarskich, zakopiańskich
i ostryskich, natomiast “warstwy” chochołowskie prawdopodobnie powstały
w okresie maksymalnego podniesienia się poziomu morza. Obecność taksonów
znanych współcześnie z niskich szerokości geograficznych wskazuje na ochłodzenie
klimatyczne w trakcie sedymentacji fliszu podhalańskiego, a zwłaszcza jego
najwyższej części.
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Studia Geologica Polonica,
117: 155-303.
Biostratigraphy and palaeoenvironment
of the Podhale Palaeogene (Inner Carpathians, Poland) in the light of palynological
studies Part II. Summary and systematic descriptions
Przemysław GEDL
Institute of Geological Sciences,
Polish Academy of Sciences, Cracow Research Centre, ul. Senacka 1, 31-002
Kraków, Poland; ndgedl@cyf‑kr.edu.pl
Summary
The purpose of the present
study was to establish the age of the Podhale Palaeogene on the basis of
dinocysts and to reconstruct its palaeoenvironment using palynofacies analysis.
The area of study was limited to the occurrence of the Podhale Palaeogene
deposits in Poland (Figs 1, 2). 514 samples were taken from natural outcrops
and boreholes from all units of the Podhale Palaeogene (Fig. 3). Schematic
location of studied sections is shown in Fig. 4; their lithological correlation
is shown in Fig. 5; sample position in the sections is shown in Figs. 6-23.
All samples were processed according to standard palynological procedure:
HCl and HF treatment; 15 ľm sieve sieving; heavy liquid separation (density
2.0 G/cm3).
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