caa a22 4500 469045388 CHVBK 20180323132823.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF02539792 doi (NATIONALLICENCE)springer-10.1007/BF02539792 Hladil Jindrich Cesky geologicky ustav, Malostranske nam. 19, CSFR-11821, Praha aut Are there turbidites in the Silurian/Devonian boundary stratotype? (Klonk near Suchomasty, Barrandian, Czechoslovakia) [Elektronische Daten] [Jindrich Hladil] Summary: A discussion arose in 1977 regarding the nature of the Silurian/Devonian boundary bed at Klonk, and the beds below and above it. Present revision of the stratotype sequence found that most clayey limestones display a multiple and composed rhythmic arrangement of laminae. Deposition of pelagic particles, effects of traction bottom currents, and turbidite inputs are distinguishable, however, the latter are rare. Semilithified surfaces and hardgrounds were found. The boundary bed No. 20 consists of several laminated rhythms. The Devonian base, marked by first occurrences ofMonograptus uniformis corresponds to a semilithified surface, a break in deposition for several tens to hundreds of years, and a change in direction of bottom currents. A moderately rippled set at the Devonian base is only about 1 cm thick and passes again into the horizontal laminated rhythms. The deposition of the boundary bed lasted about 1.2 to 2.0 Ka. It cannot be explained as a turbidite. Institut für Palaentologie, Universitat Erlangen, 1992 Sedimentology nationallicence Carbonates nationallicence Barrandian (Bohemia) nationallicence Silurian/Devonian Boundary nationallicence Facies Springer-Verlag 26/1(1992-12-01), 35-54 0172-9179 26:1<35 1992 26 10347 https://doi.org/10.1007/BF02539792 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02539792 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hladil Jindrich Cesky geologicky ustav, Malostranske nam. 19, CSFR-11821, Praha aut NATIONALLICENCE 773 0- Facies Springer-Verlag 26/1(1992-12-01), 35-54 0172-9179 26:1<35 1992 26 10347 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer