upper devonian 中文意思是什麼
upper devonian
解釋
晚泥盆世-
This paper emphasize the research of geometry, kinematics, age of formation of oblique - thrustin. it is discussed that geological significance of obligue - trusting. ( 1 ) this paper classified the strata of sertengshan - xitieshan in northern qaidam basin into daken - dabanyan group in lower proterozoic, tanjianshan group in ordovician - silurian period, aimunike group in upper devonian period and guokesan formation of zhongwu - nunsan group in permo - carboniferous
( 1 )對柴達木盆地北緣的賽什騰? ?錫鐵山一帶出露的地層進行了較為系統的劃分,釐定了古元古代達肯大坂巖群、奧陶? ?志留紀灘間山(巖)群、泥盆紀上泥盆統埃姆尼克群、石炭? ?二疊紀中吾農山群果可山組。 -
One to three karst cycles may be recognized mostly at the top of the upper permian strata, top of the middle permian maokouan strata and top of the carboniferous strata and subordinately at the top of the devonian strata
這些古巖溶作用主要存在於上二疊統頂部、中二疊統茅口組頂部和石炭系頂部,其次是泥盆系的頂部。
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