Storm origin of bone-bearing beds in the Lower Devonian placoderm sandstone from Podłazie Hill (Holy Cross Mountains, central Poland)

Abstract The paper provides a description of primary geological logs, characteristics and formal lithostratigraphy of the uppermost Emsian and lower Eifelian of the Kielce Region of the Holy Cross Mts., central Poland. Nine sections of this interval, representing the whole area of the Kielce Region, and ranging between the Lower Devonian clastics of the Winna Formation and the Middle Devonian carbonates of the Kowala Formation were studied. The succession is divided into the Barania Góra Dolomite and Limestone Formation and the Wojciechowice Dolomite Formation. Six members are distinguished within the former. In the western part of the region these are (in stratigraphical order): Porzecze Claystone Member, Dębska Wola Dolomite Member, Dąbrowa Limestone Member, and Brzeziny Dolomite Member. In the eastern part, the formation is divided into the Janczyce Dolomite Member and the Jurkowice Dolomite Member. Additionally, the Wszachów Dolomite Member and Nowy Staw Dolomite Member are distinguished within the overlying Wojciechowice Formation. The thickness of the uppermost Emsian-Eifelian succession ranges from ca. 200 m in the eastern part to ca. 130 m in the western part of the Kielce Region

Download Full-text

Upper Devonian Sponges from the Holy Cross Mountains, Central Poland

Palaeontology ◽

10.1111/1475-4983.00187 ◽

2001 ◽

Vol 44 (3) ◽

pp. 447-488 ◽

Cited By ~ 16

Author(s):

J. Keith Rigby ◽

Andrzej Pisera ◽

Tomasz T. Wrzolek ◽

Grzegorz Racki

Keyword(s):

Upper Devonian ◽

Holy Cross Mountains ◽

Central Poland

Download Full-text

A diverse crinoid fauna from the Middle Jurassic (Upper Bajocian–Callovian) of the Polish Jura Chain and Holy Cross Mountains (south-central Poland)

Swiss Journal of Geosciences ◽

10.1007/s00015-007-1207-3 ◽

2007 ◽

Vol 100 (1) ◽

pp. 153-164 ◽

Cited By ~ 11

Author(s):

Mariusz A. Salamon ◽

Michał Zatoń

Keyword(s):

Middle Jurassic ◽

Holy Cross Mountains ◽

Central Poland ◽

South Central ◽

Upper Bajocian

Download Full-text

Karst systems analyzed using borehole logs — Devonian carbonates of the Świętokrzyskie (Holy Cross) Mountains, central Poland

Geomorphology ◽

10.1016/j.geomorph.2009.04.024 ◽

2009 ◽

Vol 112 (1-2) ◽

pp. 27-47 ◽

Cited By ~ 4

Author(s):

Jan Urban ◽

Bartłomiej Rzonca

Keyword(s):

Holy Cross Mountains ◽

Central Poland ◽

Borehole Logs ◽

Karst Systems

Download Full-text

Water column euxinia and wildfire evidence during deposition of the Upper Famennian Hangenberg event horizon from the Holy Cross Mountains (central Poland)

Geological Magazine ◽

10.1017/s0016756807003317 ◽

2007 ◽

Vol 144 (3) ◽

pp. 569-595 ◽

Cited By ~ 84

Author(s):

LESZEK MARYNOWSKI ◽

PAWEŁ FILIPIAK

Keyword(s):

Organic Matter ◽

Event Horizon ◽

Black Shale ◽

Rapid Change ◽

Taxonomic Composition ◽

Critical Threshold ◽

Holy Cross Mountains ◽

Central Poland ◽

Palynological Study ◽

Amorphous Organic Matter

A palynological study of the uppermost Famennian section from Kowala Quarry (Holy Cross Mountains, central Poland) allowed recognition of two miospore zones: LV (Retispora lepidophyta–Apiculiretusispora verrucosa) and LN (Retispora lepidophyta–Verrucosisporites nitidus). Based on palynology and sedimentology, the black shale within the upper part of the section is identified as equivalent to the Hangenberg Black Shale, which is known globally. This black shale contains compounds characteristic of photic zone euxinia, including isorenieratane and its derivatives. Such compounds are absent in the organic-poor marls and shales occurring below the LN Zone, and are present only as traces in the layers just above the black shale, indicating fluctuations in the oxygen minimum zone during uppermost Famennian sedimentation. Palynofacies show high amounts of amorphous organic matter and prasinophyte concentrations in the black shale, and a subsequent significant decrease of amorphous organic matter concomitant with a rapid increase of terrestrial input (mainly miospores with common tetrads) in the layers above the black shale. This supports the relatively rapid change in the taxonomic composition of phytoplankton caused by fluctuations of the chemocline. The whole succession corresponds to one sea-level rise and fall. The presence of high concentrations of peri-condensed polycyclic aromatic hydrocarbons and large amounts of small charcoal particles at the Hangenberg event horizon indicate the occurrence of wildfires. Such observations suggest that atmospheric O22 levels had exceeded the critical threshold of 13 %, above which wildfires may occur, by latest Famennian time.

Download Full-text