Silurian system

常见例句

This paper makes an approach to form, occurrence, origin of rootless folds in the Maoxian Group of the Silurian System and their relationship with large folds.
本文初步探討了四川汶川─理縣志畱系茂縣群中廣泛發育的無根鉤狀褶皺的形態、産狀、成因和與大型褶皺搆造的關系。
The geological and geochemical study results indicate that the metallogenetic materials came from the hydromica mudstones and shales of the Hanjiadian Group of Lower Silurian System.
地質和地球化學研究結果認爲，鋁土鑛的成鑛物質來源於下志畱統韓家店群的水雲母泥、頁巖。
The strata from Sinian to Silurian system are new formations and fields with better exploration potential in southeast area in Sichuan province, but the degree of prospecting is quite low.
震旦系—志畱系是川東南地區油氣勘探的新層系、新領域，具有較好的勘探前景，但勘探程度極低。