Conodonts from the lower Ordovician at Hunneberg, south-central Sweden
Article Abstract:
A study of conodonts sampled from six sections of a lower Ordovician shale and limestone formation in Hunneberg, Sweden was conducted in an attempt to improve correlation between levels within the graptolitic shales. The findings show that the post-Tremadoc Paroistodus proteus zone can be further subdivided into four successive intervals and that these subdivisions are applicable in other parts of Sweden. Geologic dating of the sub-zones can be performed from a correlation with established graptolite/trilobite zonal boundaries.
Publication Name: Geological Magazine
Subject: Earth sciences
ISSN: 0016-7568
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
The timing of ordovician magmatism in the English Lake district and cross fell inliers
Article Abstract:
Ordovician rocks in the English Lake district and Cross Fell inliers in southeast Ireland form part of the Ordovician destructive plate margin system of microcontinental Avalonia. The contemporaneity of mid and late Ordovician Volcanic periods in England and Wales suggests that the two areas were once part of the some subduction system reacting similarly to plate-scale magma-generating and tectonic processes.
Publication Name: Geological Magazine
Subject: Earth sciences
ISSN: 0016-7568
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: O, H, C isotope study of rocks from the KTB pilot hole: crustal profile and constraints on fluid evolution. A detailed Th, Sr and O isotope study of Hekla: differentiation processes inan Icelandic volcano
- Abstracts: Implications of a Bengal Fan-type deposit in the Paleozoic Lachlan fold belt of southeastern Australia. Slow late Paleozoic exhumation in the Presidential Range of New Hampshire as determined by the 40Ar/39Ar relief method: comment and reply
- Abstracts: Sizing up the sub-Tommotian unconformity in Siberia: comment and reply. Biostratigraphy of the Vendian-Cambrian beds and the lower Cambrian boundary in Siberia
- Abstracts: Distribution and tectonic setting of Ordovician K-bentonites in the United Kingdom