TY - JOUR

T1 - Lower Ordovician conodonts from the G-14 well, Baltic Sea (Germany)

AU - Stouge, Svend

PY - 2001

Y1 - 2001

N2 - The offshore G-14 well is situated in the Baltic Sea north of the island of Rügen (Germany). Its Lower Ordovician strata (upper Tremadoc to lower Llanvirn) yielded conodonts exclusively of Baltic affinity, which permit a precise age determination and correlation to the strata in Scandinavia and northern Poland. The newly recovered conodont faunules from the Lower Ordovician limestones and calcareous grey shales in the G-14 well can be assigned to the Paltodus deltifer and the upper Paroistodus proteus conodont Zone respectively. The uppermost part of the youngest limestone unit (Komstad Limestone) in the well can be correlated with the Lenodus antivariabilis and L. variabilis conodont zones. Between the two carbonate units, calcareous shales and siliciclastic shales of the Tøyen Shale Formation are intercalated yielding respectively conodonts, chitinozoans and graptolites which suggest late Tremadocian to early Arenigian ages for these sediments. Three faunal hiatus were confirmed: At the Tremadoc-Hunneberg boundary, where the lower two subzones of the Paroistodus proteus conodont Zone are absent; between the Tøyen Shale Formation and the overlying upper Arenigian Komstad Limestone; and above the Komstad Limestone with the Didymograptus artus and D. murchisoni graptolite zones absent signifying an extensive stratigraphic hiatus between the Komstad Limestone and the overlying Dicellograptus Shale Formation.

AB - The offshore G-14 well is situated in the Baltic Sea north of the island of Rügen (Germany). Its Lower Ordovician strata (upper Tremadoc to lower Llanvirn) yielded conodonts exclusively of Baltic affinity, which permit a precise age determination and correlation to the strata in Scandinavia and northern Poland. The newly recovered conodont faunules from the Lower Ordovician limestones and calcareous grey shales in the G-14 well can be assigned to the Paltodus deltifer and the upper Paroistodus proteus conodont Zone respectively. The uppermost part of the youngest limestone unit (Komstad Limestone) in the well can be correlated with the Lenodus antivariabilis and L. variabilis conodont zones. Between the two carbonate units, calcareous shales and siliciclastic shales of the Tøyen Shale Formation are intercalated yielding respectively conodonts, chitinozoans and graptolites which suggest late Tremadocian to early Arenigian ages for these sediments. Three faunal hiatus were confirmed: At the Tremadoc-Hunneberg boundary, where the lower two subzones of the Paroistodus proteus conodont Zone are absent; between the Tøyen Shale Formation and the overlying upper Arenigian Komstad Limestone; and above the Komstad Limestone with the Didymograptus artus and D. murchisoni graptolite zones absent signifying an extensive stratigraphic hiatus between the Komstad Limestone and the overlying Dicellograptus Shale Formation.

UR - http://www.scopus.com/inward/record.url?scp=0041320796&partnerID=8YFLogxK

M3 - Journal article

AN - SCOPUS:0041320796

VL - 222

SP - 141

EP - 160

JO - Neues Jahrbuch für Geologie und Paläontologie

JF - Neues Jahrbuch für Geologie und Paläontologie

SN - 0077-7749

IS - 1-2

ER -