拗槽 的英文怎麼說
中文拼音 [niùcáo]
拗槽
英文
trough bend-
The sedimentary formation can be summarized as rift bay filling sequence, epicontinental sea filling sequence, offshore debris lake basin sequence and inner continental lake basin sequence. a framework of sequence stratigraphy for the upper palaeozic strata is established in the area. the helan aulacogen of upper carboniferous in the west margin of ordos can be divided into 12 sequences, and most of the upper palaeozoic strata in the area can be divided into 15 sequences
本文對研究區內上古生界進行了層序地層學探討，將本區沉積建造概括為裂陷海灣充填層序、陸表海充填層序、近岸碎屑湖盆層序和內陸湖盆層序，建立了研究區上古生界層序地層學格架，西緣賀蘭拗拉槽上石炭統劃分為12個層序，本區大部分地區上古生界可劃分出15個層序，並全面地概括了層序演化各階段的具體特徵。Most of areas are not deposited until benxi stage, except for helan aulacogen, where the deposit began in jingyuan stage
除賀蘭拗拉槽北部從靖遠期開始沉積外，絕大部分地區從本溪期才開始沉積。The mesoproterozoic mafic dyke swarms are extensively distributed in the central north china craton, which are not deformed and metamorphic, emplacing the pre - existed fractures, so the dyke swarms become the conspicuous marks to reconstruct the mesoproterozoic tectonic stress field of the central ncc. the mafic dykes in the northern block are transtensional while the dykes in the central and southern blocks are extensional. the mesoproterozoic tectonic stress field could be simulated on the analysis of the distribution and mechanical origin of the mesoproterozoic mafic dyke swarms in the central ncc. the simulation result shows that the mafic dyke swarms were formed in the extensional tectonic setting in the ncc in the mesoproterozoic time, which are related to the extension of the mesoproterozoic yanliao - zhongtiao aulacogens cross the central ncc
克拉通北部地塊的鎂鐵質巖墻群為張剪性，而中部和南部地塊為張性。根據華北克拉通中部中元古代鎂鐵質巖墻群的分佈和成因機制分析，來恢復模擬中元古代的構造應力場。數值模擬結果表明鎂鐵質巖墻群在中元古代形成於伸展的大地構造背景，與橫穿華北克拉通中部的燕遼-中條拗拉槽系的伸展作用有一定的聯系。
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