Tagasi otsingusse
Vinn & Toom, 2016e
Borings in phosphatized Cambrian siltstone pebbles, Estonia (Baltica)
Vinn, O., Toom, U.
DOI | 10.1017/S001675681500076X |
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Aasta | 2016 |
Ajakiri | Geological Magazine |
Köide | 153 |
Number | 4 |
Leheküljed | 635-642 |
Tüüp | artikkel ajakirjas |
Eesti autor | |
Keel | inglise |
Id | 4558 |
Abstrakt
The earliest know macroborings (Trypanites) from Baltica occur in early Cambrian phosphatized siltstone pebbles from Kopli quarry in Tallinn, Estonia. Trypanites borings also occur in Furongian phosphatized siltstone pebbles in northern Estonia. The intensity of bioerosion on these Cambrian pebbles is low compared to analogue substrates from Ordovician deposits of Baltica. These bored phosphatized siltstone pebbles show that bioerosion of hard substrates occurred in relatively cold climate epicontinental seas during Cambrian time.
Viimati muudetud: 25.2.2023