On the features of the complex orthambonites pander – orthis dalman (brachiopoda) of the lost outcrops ordovician sediments on the river Pulkovka (Leningrad region)
- 1 — National Mineral Resources University (Mining University)
- 2 — National Mineral Resources University (Mining University)
Abstract
The article analyses a complex of the Ordovician's orthida (brachiopoda) of the lost outcrops on the river Pulkovka in Leningrad region. Some samples from a large collection of brachiopods in the holdings of the Mining Museum are analysed. These samples were collected in the XIX century from some outcrops on the river Pulkovka. The geological sections there were unique outcrops due to a stratigraphic interval from the Lower Cambrian to Middle Ordovician found in them. Many early Palaeozoic marine inverte-brates, such as brachiopods, cystoideas, bolboporits, pelecypods, gastropods, were collected from these sediments. In the middle of the XX century the outcrops on the river Pulkovka were lost as a result of landsliding processes. The authors have identified an orthida's complex in the collection, comprising 12 species. The structure of the complex indicates that the stratigraphic interval, from which brachiopods were collected, can be defined as Volkhov, Kund, Azery horizons of the Middle Ordovician.
References
- Алихова Т.Н. Руководящая фауна брахиопод ордовикских отложений северо-западной части Русской плат-формы. М.: Госгеолиздат. 1953. 164 с.
- Рубель М.П. Нижнеордовикские брахиоподы надсемейств Orthacea, Dalmanellacea и Syntrophiacea Восточной Балтики // Тр. Геол. ин-та Таллина. 1961. № 6. С.141-226.
- Странгвейс У. Геогностическое описание Санктпербургских окрестностей // Тр. Минералогического обще-ства. СПб, 1830. Т.1. С.1-96.
- Странгвейс У. Описание стланей, видимых по речке Пулковке, вблизи деревни Большой Пулковой, находя-щейся в окрестностях Санктпетербурга // Тр. Минералогического общества. 1830. Т.1. С.97-110.
- Цинкобурова М.Г. О палеонтологической коллекции из утраченных обнажений среднего ордовика окрестно-стей Пулково (Ленинградская область) в собрании Горного музея / М.Г.Цинкобурова, Д.В.Безгодова // Объекты па-леонтологического и геологического наследия. Кунгур. 2013. С.127-128.
- Jaanusson V. Orthambonites and related Ordovician brachiopod genera / V.Jaanusson, М.Basset // Palaeontology. 1993. Vol.36. № 1. P.21-63.
- Pander Сh. Beitrage zur Geognosie d. Russischen Reichs / Gedruckt bei K.Krav. St Petersburg, 1830. P.165.
- Tsinkoburova M. About peculiarites of the complex of Orthambonites Pander – Orthis Dalman of lost outcrops on the Pulkovka river (Leningrad region) / M.Tsinkoburova, D.Bezgodova // Geologija. 2014. Vol.56, 1(85). P.40.