Permalink : http://hdl.handle.net/2115/34831

Fennoscandian hälleflintas and leptites of 188 samples published up to the present, which in many cases are genetically associated with the are mineralization, are petrochemically reexamined and recalculated herein with the purpose to contribute in near future on studying of the Palaeozoic volcanic activities belonging to the Japanese Variscan Orogeny in Northeast Japan.