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Stratigraphy and correlation of the Upper
Cretaceous
Roland Nádaskay, Jaroslav Valečka, Thomas Voigt, Doreen Müller

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Bohemian Cretaceous Basin
Jiřetín
Sandstone-dominated part of
the Saxon-Bohemian Cretaceous
Basin
within the Late Cretaceous
Europe
Paleogeography of the Late
Cretaceous (emerged lands vs.
marine realms)

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Large outcrops along the valley of the Elbe river
(Saxony –Schrammsteine)

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Facies of sandstones 1
Middle Turonian (Postelwitz Formation,
sandstone b, Postelwitz quarries,
Winterberg)
coarse-grained to conglomeratic
sandstones, massive to indistinctly bedded
Important marker horizons

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Facies of sandstones 2
Lower Turonian (Bila Hora fm. = Schmilka
fm.), Tissaer Wände, Bielatal)
Cross-bedded, medium-grained sandstones,
partly bioturbated

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Facies of sandstones 3
Middle Turonian (Postelwitz Formation,
sandstone a, Postelwitz quarries)
Fine- to medium-grained bioturbated
sandstones with coarse and fine interlayers.

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Facies of sandstones 4
Lower Turonian (Schmilka Formation,
Pirna, Middle Turonian (Jizera Formation
Belveder), Upper Turonian und Lower
Coniacian
Fine-grained bioturbated sandstones,
massive, rare calcareous cements
gradually transitions to siltstones and
mudstones!

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Facies of mudstones
Middle Turonian (Postelwitz Formation,
Lamarcki Pläner, Raum) Lower Turonian
(Briesnitz formation, borehole Nasser
Grund)
Sandy and clayey siltstones with (with
sandstone interlayers and sand-filled
burrows)

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Medium-grained Qtz-sandstone, well-sorted
(borehole 4650_X Svor)
Mudstone, calcareous, with admixture of
sand and glauconite (4650_X Svor)
Sandy mudstone with burrows (4650_A Skalice)
Fine-medium-grained Qtz-sandstone (6412_L Lesné)

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Gliederung und geometrische Beziehungen in der Sächsischen Kreide
Strehlen-Fm.
Schmilka-Fm.
Postelwitz-Fm.
Schrammstein-Fm.
Oberhäslich-Fm.
B.-Fm.
Niedersch.-Fm.
Oberh.-Fm.
Dölzschen-Fm.
Briesnitz-Fm.
Räcknitz-Fm.
Niedersch.-Fm.
Strehlen-Kalk
Strehlen-Kalk
Räcknitz-Mergel
Räcknitz-Mergel
Labiatus-Pläner
Labiatus-Pläner
Plenus-Pläner
Plenus-Pläner
Pennrich-
Sst.
Plenus-Ton
Plenus-Ton
Plenus-Ton
Unter-Quader
UQ
Mobschatz-Fm.
Grundschotter
Grundschotter
Grundschotter
Niederschönaer
Schichten
Niederschönaer
Schichten
Niederschönaer
Schichten
Strehlen-Mergel
Strehlen-Mergel
Zatschke-Mergel
Zeichen-Ton
Sandstein e
Sandstein d
Sandstein c3
Oberquader
Herrenleite-Sst.
Sandstein b
Sandstein b
Sandstein a
Labiatus-Sandstein
Unterquader
Unterquader
Unterquader
(Plenussandstein)
Plenus-Sandstein
Labiatus-Pläner
(Plenus-Pläner)
(Plenus-Pläner)
(Plenus-Pläner)
Labiatus-Pläner
Sandstein c1/2
Glaukonitisch-
sandige Mergel
Lamarcki-Pläner
Unterer Grünsandstein
Mittlerer
Grünsandstein
O.Grünsst.
Cottaer
Sandstein
Klippen
Klippen
Meißen
Dresden-Freiberg
Pirna-Graupa-Pillnitz
Rosenthal
Rathen-Königstein-Bad Schandau-Hinterhermsdorf
Meißen-Fm.
M.-Fm.
(delta2)
(gamma3)
Lohmgrundmergel
Brausnitzbach-
Mergel
Sandstein e
Sandstein d
Sandstein c3
Sandstein b
Labiatus-Sandstein
Labiatus-
Sst.
Labiatus-Pläner
Sandstein c1/2
Lamarcki-Pläner
Unterer Grünsandstein
Mittlerer Grünsandstein
Cottaer
Sandstein
(delta2)
(gamma3)
Lohmgrundmergel
Lohmgrundmergel
Lohmgrundmergel
Kalk, Kalkmergel
Ton, Tonmergel
sandige Kalksiltsteine
überw. Feinsandsteine
Legende
überw. Grobsandsteine
überw. Grünsandsteine
Konglomerate (marin)
Sandst. & Tonst. (terrestr.)
Konglomerate (terrestr.)
Formal lithostratigraphic units and correlation in Germany
(Formalisation for HYK50)

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Shallow-marine
(nearshore to deltaic)
sandstones on the NW
part of the BCB
(top to bottom: younger
to older formations)
Different geometries
and internal
arrangement of the
sandstone strata result
from slightly different
depositional setting

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3D-Model for groundwater use
Necessary: borehole data and surface mapping

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Labiatus-sandstone
sandstone b
Labiatus-sandstone
Digital Elevation Model: lithostratigraphy across the borders,
Additionally: occurrence and absence of faults
sandstone c3
Unterquader-sandstone
Area between upper Bielatal, Ostrov, Tissa and Sněžník

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Key region 1 for correlation of the
Jizera Formation with the Postelwitz Formation

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Cross-section on the base of the DEM: Note the typical morphology!

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Correlation of the Turonian succession between Bohemia and Saxony
Postelwitz Formation – Jizera Formation
Formationen Sachsen
Subformationen
Formationen Böhmen
Subformationen
Postelwitz-Formation
Pirnaer Oberquader
Jizera-Formation
Sandstein der Jizera-Fm.
Oberer Grünsandstein
Obere glaukonitisch-
sandige Mergel
Mergel der Jizera-Fm.
Mittlerer Grünsandstein
Sandstein der Jizera-Fm.
Lamarcki-Pläner
Mergel der Jizera-Fm.
Unterer Grünsandstein
Sandstein der Jizera-Fm.
(Unterer Mergel)
Schmilka-Formation
Labiatus-Sandstein
Bila Hora Formation
Sandstein der Bila Hora-
Formation
Cottaer Sandstein
Briesnitz-Formation
Labiatus-Pläner
Mergel und Tonsteine
der Bila Hora-Formation
Lohmgrundmergel

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Sachsen
Böhmen
Bohrung Graupa
Winterberg
bisherige Ansicht
Vorschlag
Unter-Coniac
Zatschker Mergel
Sandstein e
Jizera-Formation
(Mittel-Turon)
Brezno-Formation
Ober-Turon
Teplice-Formation
Herrenleite-Sandstein
Sandstein d
Zeichener Ton
gamma 3
Oberquader
Sandstein c3
Jizera-Formation
Oberer Grünsandstein
Sandstein c1/2
glaukonitisch-sandiger
Mergel
Sandstein b
Sandstein b
Mittel-Turon
Mittlerer Grünsandstein
Sandstein a
Lamarcki-Pläner
Result: Sandstone c3 represents the top of the
Jizera Formation, the conspicuous, 50 m thick sandstone d in Saxony is in
Bohemia only exposed at the south slope of the Großer Winterberg!

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Key region 2: Großer Winterberg - Pravicka Brana: Highest exposed thickness
in the working area (from Bila Hora Fm. to Teplice Fm. 500 m)! About 150 m thick
succession above sandstone c3: Teplice Formation or very thick Jizera Formation?

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Result of mapping: typical prograding cycles of the Czech lithostratigraphy
Tu6-7 and Co1 correspond to sandstone d and e of Saxony, gamma3 and delta 2
represent transgressive surfaces

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Geological map of the the Winterberg

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New unit on top of sandstone e!
Sandstone f

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Difficult: correlation of Zittau Mountains and Bohemian Basin
(end of GRACE 2013)

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DEM: support of mapping at the most striking tectonic feature: Hohe Liebe
Schmilka-Fm.
Sandstone a
Sandstone b
Sandstone b
Sandstone b
granodiorite
Oberhäslich-Fm.

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In some parts in Saxony: new geological map

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Cross-sections on the base of borehole data

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Documentation of borehole data (published and unpublished)

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Sedimentary formations
within the Resibil project
area
Upper
Cretaceous
Jurassic
Carboniferous–Permian

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idealized section – Upper Cretaceous formations correlated with respect to
„datums“ (conspicuous stratal boundaries in boreholes/well-logs)
Actual geological section with interpreted tectonic deformation
parts of the same formation may appear at different topographic levels

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fissure,
karst
permeability type
groundwater table
porous
recharge
(infiltration of
surface water / preci-
pitation into soils/rocks)
runoff => surface water flows
Aquifer
rock body with relatively higher permeability compared to
neighboring rock units with relatively lower permeability –
aquitards
Non-permeable rock units are called
aquicludes
vadose zone (unsaturated, with capillary
fringe)
aquitard
aquifer
aquifer
aquiclude
aquifer or aquitard
aquifer or aquitard
sand
marl
sand
marl
marl
clay
saturated zone (aquifer)

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Upper Cretaceous
groundwater
Aquifers
and
aquitards
in the
Resibil project
area:
What rocks
actually represent
them?

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Stratigraphic correlation of the Saxony(letf) and Czech (right) parts of the
basin: it is crucial for hydrogeology to know the equivalence of
stratigraphic units!