Similar words: ordovician period, noviciate, cordova, optician, galician, logician, musician, magician. Meaning: n. from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds.
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61. The generation of hydrocarbons of the Ordovician source is different from that of Mesozoic nd Cenozoic sources since there were on high plants in the Ordovician Period.
62. Late Ordovician organic reefs composed of cyanophyta and calcareous sponge were firstly discovered in northern Tarim basin.
63. The natural geography of the Ordovician period is that: the Hannan paleocontinent and the Bashan Mountain rise at the north, and the wide epicontinental sea basin lies in the south.
64. In this paper, the straticulate dolostone and spatulate dolostone in Lower Ordovician strata of Well Tazhong 1 were studied using petrologic and geochemical methods.
65. The Middle Ordovician Llandovery rugose corals are abundant in the Yangtze region, especially in the Early Silurian.
66. The Cambrian and Ordovician are important exploration target strata in Leshan - Longnvsi paleo - uplift area.
67. The Ordovician and Devonian rocks did not yield reliable character remanence due to either too weak magnetization or dispersal remanent directions.
68. There is abundant karst fissure water in the limestone and dolomite of Cambrian and Ordovician.
69. Many coal mine in our country suffers from the Ordovician period Karst containing water inrush frequently due to the complex geology condition, Water inrush is a serious disaster in coal mining.
More similar words: ordovician period, noviciate, cordova, optician, galician, logician, musician, magician, mortician, dietician, clinician, patrician, tactician, physician, beautician, politician, esthetician, technician, phoenician, logistician, theoretician, academician, electrician, rhetorician, aesthetician, statistician, geriatrician, musicianship, pediatrician, geometrician.