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| Content Provider | Springer Nature Link |
|---|---|
| Author | Buggisch, Werner Michl, Sabine |
| Copyright Year | 2002 |
| Abstract | Neptunian dykes in Devonian reef limestones are described from the Hahnstätten Quarry in the south-western Lahn Syncline. The echinoderm grainstones of the dykes contain mixed conodont faunas of Late Frasnian to Early Carboniferous age, indicating an Erdbach Limestones I and/or II assignment according to the definition ofKrebs (1966). The almost complete record of all conodont zones of this time interval mentioned above suggests continuous sedimentation at least from the earlyrhenana up to the lateanchoralis Zone on the top of the drowned Devonian Hahnstätten Reef. The preferred orientation, the short time span of development and filling of fissures and crevices, and the coincidence of their formation with the first volcanoclastic sediments as well as the collapse of the northwestern part of the Langenaubach reef (Langenaubach breccia) in the Dill syncline, coincides with the interpretation that the fissures and crevices were caused by crustal stretching and related extensional tectonics.Aus dem Steinbruch Hahnstätten in der südwestlichen Lahnmulde werden Spalten in devonischen Riffkalken und ihre Füllung beschrieben. Die Echinodermen-Schuttkalke der Spaltenfüllungen enthalten Conodonten-Mischfaunen vom späten Frasnium bis in das frühe Unterkarbon, die eine Zuordnung der Kalke zum Erdbacher Kalk I und/oder II sensuKrebs (1966) zulassen. Da nahezu alle Conodontenzonen des oben genannten Zeitintervalls nachgewiesen werden konnten, kann eine kontinuierliche Sedimentation mindestens von der Unterenrhenana-Zone bis in die Obereanchoralis-Zone über dem abgestorbenen devonischen Riff von Hahnstätten angenommen werden. Die schmalen Spalten und großen Hohlräume zeigen eine bevorzugte Orientierung und sind innerhalb kurzer Zeit gefüllt worden. Gleichzeitig kollabierte in der Dillmulde der nordwestliche Teil des Langenaubacher Riffs, und es traten erste vulkanoklastische Gesteine auf. Dies bestärkt die Interpretation, daß die Spalten im Zuge der unterkarbonischen Krustendehnung und der damit verbundenen Extensionstektonik entstanden sind. |
| Starting Page | 495 |
| Ending Page | 513 |
| Page Count | 19 |
| File Format | |
| ISSN | 00372110 |
| Journal | Palaeobiodiversity and Palaeoenvironments |
| Volume Number | 82 |
| Issue Number | 2 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2002-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Condonts mixed faunas Neptunian dykes paleogeography Late Frasnian Early Carboniferous Langenaubach Rheinisches Schiefergebirge Paleontology Biodiversity Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography Freshwater & Marine Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Paleontology |
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