CAJ | 학술논문

以银川盆地构造反转为研究对象，从构造反转证据、反转时期以及反转强度等方面进行了分析，以此为基础，探讨了银川盆地中生代以来构造演化。研究表明：负反转构造的发育、新生界与中-古生界地层展布特征的差异性以及伸展构造样式与挤压构造样式并存等方面证明银川盆地发生负反转；构造反转的挤压隆升时期为晚侏罗世，伸展沉降期为渐新世至新近纪；银川盆地北部构造反转强度大于南部，西部反转强度大东部；银川盆地自中生代以来经历了三叠纪至早-中侏罗世时期的整体沉降、晚侏罗世的挤压隆升与差异剥蚀、早白垩世的再次沉降、白垩纪末期至新生代早期的整体隆升剥蚀、渐新世至新近纪的快速断陷以及第四纪的整体拗陷六个演化叠合阶段。
이은천분지구조반전위연구대상，종구조반전증거、반전시기이급반전강도등방면진행료분석，이차위기출，탐토료은천분지중생대이래구조연화。연구표명：부반전구조적발육、신생계여중-고생계지층전포특정적차이성이급신전구조양식여제압구조양식병존등방면증명은천분지발생부반전；구조반전적제압륭승시기위만주라세，신전침강기위점신세지신근기；은천분지북부구조반전강도대우남부，서부반전강도대동부；은천분지자중생대이래경력료삼첩기지조-중주라세시기적정체침강、만주라세적제압륭승여차이박식、조백성세적재차침강、백성기말기지신생대조기적정체륭승박식、점신세지신근기적쾌속단함이급제사기적정체요함륙개연화첩합계단。
The tectonic inversion of Yinchuan Basin was studied from inversion evidence, inversion period, and inversion intensity. In addition, the evolution and superposition of Yinchan Basin were discussed. The results show that the tectonic inversion of Yinchuan Basin was confirmed by development of negative inversion structures, the difference in distribution characteristics of the Cenozoic and Mesozoic-Palaeozoic formation, existing of extension and extrusion structural style. The extrusion and uplifting period of tectonic inversion is Late Jurassic, and the extension and subsidence period is from Oligocene to Neogene. The inversion intensity is stronger in the northern and western regions of the basin than in the southern and eastern regions. Yinchuan Basin has experienced six stages of evolution and superposition since Mesozoic, including integral subsidence from Triassic to Early-Mid Jurassic, extrusion uplifting and uneven denudation in Late Jurassic, again subsidence in early Cretaceous, integral uplifting denudation from Late Cretaceous to Early Cenozoic, rapid faulting related depression from Oligocene to Neogene, and integral depression in Quaternary.