Effect of Tectonic Tilt of Faulted Blocks on Lake -Level Change of Single -Faulted Continental Basins
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摘要: 在陆相单断盆地中，如果不考虑湖水总体积的改变，当断块发生掀斜时，因非均衡构造沉降会发生以下五种变化：（１）缓坡湖退；（２）陡坡湖进；（３）湖心湖水变深；（４）湖面变窄；（５）可容纳空间增大。若干实例现已初步证实了这种作用的影响.Abstract: Relative changes of lake-level in continental basins are complicated controlled by multiple variablessuch as tectonic subsidence, absolute lake-level change, deposit supply and climate.Perhaps the waterlevel of lake basin is more significantly influenced by tectonic variation than that of sea basin because ofthe nonbalanced tectonic subsidence.With the total water volume of lake neglected, five changes of single-faulted basins would happenwhile blocks tilt: (1) regression at gentle slope;(2) transgression at steep slope;(3) deepening of waterbody in the centre of a lake;(4) broadness of lake-level and (5) growth of capacity.Some practical datahave proven these preliminary conclusions.
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Key words:
- tectonic tilt /
- lake level /
- transgressio /
- regression /
- accomodation
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[1] (1) 刘震等.论层序地层学对地震地层学领域的发展.石油大学学报, 1992, (16): 15～13.
(2) 夏文臣等.沉积盆地中等时性地层界面的成因类型及其在成因地层分析中的意义.地质科技情报, 1993, 12(1): 27～32.
(3) 解习农等.陆相盆地层序地层研究特点.地质科技情报,1993, 12(1): 22～26.
(4) 张万选等.陆相地震地层学.石油大学出版社, 1993.(Con -tinued on page 71) -
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