x
uploads/sinistral.jpg

sinistral adj.(opp. dextral) 向左的,(貝殼等)...

sinistrodextral

Based on the analyses of structural features , volcanic activities , sequence construction and so on , it is believed that liaohe basin has experienced the period of dextral transtensional stress field in late jurassic - early cretaceous , middle and late paleocene , late eocene , miocene , and also the period of sinistral compresso - shear stress field in late cretaceous , early paleocene , early and middle eocene , oligocene , pliocene 對構造現象、火山活動、層序充填型式等多種實際資料的分析表明:遼河盆地經歷了侏羅紀末白堊紀早期、古新世中后期、始新世中后期、中新世等右旋張扭應力場作用階段,以及白堊紀晚期、古新世初期、始新世早中期、漸新世、上新世以來等左旋壓旋應力場作用階段。

Jiyang depression is a field where nonhydrocarbon is rich . these resources have close relation with the activities of the volcanos . at the same time , the activities of volcanos have deep contact with the activities of the faults . the growth of the faults in jiyang depression is great . by the research of the index number of the faults growth and the other researches , nw direction faults are the most ones in mesozoic , nw and ne and approximately ew directions all exist in cenozoic . the above reflects the whole geotectonic background that sinistral shearing stress field exists in mesozoic , but dextral shearing stress field exists in cenozoic 這些氣藏與火山活動有密切的成生關系,同時火山活動與斷裂活動也有密切的關系。濟陽坳陷內斷裂活動極為發育,通過斷層生長指數等的分析,推斷中生代斷裂以北西向為主,新生代則兼有北西向北東向和近東西向的斷裂,上述斷裂發育特征反映了該區的大地構造背景,在中生代是左旋的剪切應力場,在新生代則是右旋的剪切應力場。

Especially interesting is the serpentinous peridotite in this belt occurred as lense blocks of various sizes , and superimposed with other geological masses with faults , and in combine to constitute the mixture . system in the belt . five tectonic stage can be discerned in this area : ( 1 ) south - north ward overthrust ; ( 2 ) sinistral strike - slip ( 3 ) dextral strike - slip ( 4 ) south - north ward overthrust ( 5 ) northeast , northwest late stage fault 本區上述的結構構造特征先后經歷了五期構造作用,依次為: ( 1 )南北向逆沖推覆; ( 2 )左行走滑; ( 3 )右行走滑; ( 4 )南北向擠壓推覆; ( 5 )北東向、北西向晚期斷裂;

In experiments , an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs , but an injection from sinistral eggs does not influence dextral eggs 在實驗中,用取自右旋卵子的細胞質進行的注射,可改變左旋卵子的模式;用取自左旋卵子的細胞質進行的注射卻不能影響到右旋卵子。

In experiments , an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs , but an injection from sinistral eggs does not influence dextral eggs 用取自左旋卵子的細胞質進行的注射卻不能影響到右旋卵子。

Sinistral strike - slip faults along the southern alashan margin and eastwards extending of the altun fault 阿拉善地塊南緣的左旋走滑斷裂與阿爾金斷裂帶的東延