Poniklá - řečiště Jizery
General Characteristics
County (administration):
Liberecký kraj
District (town):
Semily
Village:
Poniklá
Cadastre:
Přívlaka, Poniklá
Map sheets:
03-41 Semily, 03-411 Rokytnice n.J.
Accessibility:
no traffic restriction ( by car)
ID:
563
Geology
Short characteristics of the site:
Jizera River channel with outcrops of greenschists and graphitit phyllites with interlayers of laminated silicites (lydites). Graptolite finds in phosphorite concretions which evidence a Silurian age. The only locality with paleontologically proved Silurian.
Regional geologic unit:
Bohemian Massif > Lugicum > -Krkonoše-Jizerské hory Mts. crystalline complex > Krkonoše crystalline complex
Stratigraphy:
Paleozoic
Subject:
paleontology, petrology, sedimentology
Geological phenomenon:
river channel, concretion
Genesis:
metamorphic (general metamorphism), sedimentary
Rock:
black shale, phyllite
Territorial protection
Level of protection:
Interesting geological localities in National park
Part of LEPA (Large-size especially protected areas):
Krkonošský národní park
Conflicts of interests:
without conflicts
References
- Horný /1964/ Chlupáč /1993/ Chaloupský et al./1989/
- Kachlík V. et.al. (2013): Vysvětlivky k základni geologické mapě ČR 1 : 25 000 list 03-411 Rokytnice nad Jizerou. MS archiv ČGS
Elaboration and Updating
Elaborated by:
Ivo Chlupáč, 22.04.1993
Updated by:
Kachlík Václav, 11.11.2012
Citation
The database Important geological localities of the Czech Republic: 563 [online]. Prague: Czech Geological Survey, 1998 [cit. 2023-06-16]. Available from: https:// lokality.geology.cz/563.
Location in map:
Assessment
Scientifical assesment:
great
Educational assesment:
major
Significance:
supraregional
Representativeness:
middle
Geological importance:
paleontological type locality, geo-regional value (mapping)
Excursion locality:
yes
Locality conditions:
no problems
You can send information about a change in the status of the site to lokality@geology.cz
