1,
http://www.wanfangdata.com.cn/qikan/periodical.Articles/sysydz/sysy99/sysy9903/990303.htm
NEGATIVE INVERSION STRUCTURE IN THE JIYANG DEPRESSION
AND ITS PETROLEUM GEOLOGICAL SIGNIFICANCE
CHEN Jie1,DONG Dong2,QIU Ming-wen2
(1.Research Institute of Geosciences, Shengli Bureau of Petroleum Administration, Dongying,Shandong 257000, China;
2.Exploration Enterprise Section of Shengli Oil Field, Dongying, Shandong 257000,China)
Abstract:The Jiyang Depression is an important Mesozoic-Cenozoic petroliferous basin in East China. In the past, it is always considered as a pure tensional fault basin. However, the latest descovery of negative inversion structure in the basin and its study show that the basin experienced alternate negative inversion and positive inversion stages in the early development period of the Mesozoic, and presents the characteristics of negative inversion structure on the whole. In this paper, the types and characteristics of negative inversion structure are studied, the "thin-based" and "bald-based" two types of negative inversion folds as well as "paranormal fault type" and "upper-normal and lower-reversed mixed type" two categories and four subcategories of negative inversion faults are identified, and the formation and evolution of the basin and the negative inversion structure are discussed. It is pointed out that the negative inversion structure has important significance to basin genesis, tectonic belt evolution, complex hydrocarbon accumulation-belt patterns, pool formation and prediction, etc.
Key words:tectonic types; negative inversion structure; fault depression; petroliferous basins; petroleum geology; the Jiyang Depression
2,
http://ams.allenpress.com/perlserv/?request=get-abstract&doi=10.1175%2F1520-0469(1979)036%3C0424:POCMLE%3E2.0.CO%3B2
Prediction of Convective Mixed-Layer Entrainment for Realistic Capping Inversion Structure
J.W. Deardorff11. Department of Atmospheric Sciences, Oregon State University, Corvallis 97331
ABSTRACT
The first-order jump model for the potential temperature or buoyancy variable at the capping inversion atop a convectively mixed layer is reexamined and found to imply existence of an entrainment rate equation which is unreliable. The model is therefore extended here to allow all the negative buoyancy flux of entrainment to occur within the interfacial layer of thickness Δh and to allow realistic thermal structure within the layer. The new model yields a well behaved entrainment rate equation requiring scarcely any closure assumption in the cases of steady-state entrainment with large-scale subsidence, and pseudo-encroachment. For nonsteady entrainment the closure assumption need only be made on d(Δh)/dt in order to obtain the entrainment rates at both the outer and inner edges of the interfacial layer. A particular closure assumption for d(Δh)/dt is tested against five laboratory experiments and found to yield favorable results for both Δh and the mixed-layer thickness if the initial value of Δh is known. It is also compared against predictions from two zero-order jump models which do not attempt prediction of Δh and one first-order jump model.
Manuscript received July 21, 1978, in final form November 8, 1978
DOI: 10.1175/1520-0469(1979)036<0424:POCMLE>2.0.CO;2
3,
http://www.searchanddiscovery.net/documents/abstracts/gia2003/ardhie.pdf