The stratigraphic sequence of the Neogene in the area includes the middle Miocene Dongxuanguan Formation (N1d), late Miocene Liuhe Formation (N1l) and Huanggang Formation (N1h) and Pliocene Yuhuatai Formation (N2y), as well as an informal lithostratigraphic unit-the Fangshan basalt (fb).
The paper sets up stratigraphic sequence on the base of region geological background, and also studies the burial hill strata spacial distribution characteristics on the base of core describing、stratigraphic dip and imaging log interpretation.
By carefully studying litho-electric property relationship and varying characteristics of Yanchang formation of upper triassic,Erdos basin,we can correctly identify stratigraphical sequence,forecast distribution trend of advantageous reservoirs,summarize source-reservoir-caprock group and evolutive law of Erdos basin,and show clearly sedimentary facies of advantageous exploration.
In addition, on the basis of the data of Dameigou profile, division of the stratigraphical sequence for the northern margin of the Qaidam Basin has been studied, meanwhile according to the distribution characteristics ofJurassic remains strata , the auther puts forward that two-large subsidence belts had been formed during the Jurassic, Jurassic strata get deep along the front of Mountain, thus provide the source rocks for the reservoir-forming of the thrust-belt at the front of mountain.
The paper makes a thorough analysis on the strutural features of the Qinjing Group, thus reestablishing the strata sequence of Qinlin Group in Songshugou zones,according to comprehensive researches of aerial and land satellite photographs and solid verifying-work in field, that is the geological survey of 1.50000.
According to data of new drilled holes and outcrop profile,strata sequence oflate Mesozoic in Yanji basin is set up and perfected ,which provides new data for devision andcorrelation of strata ,understanding of basin construction ,and hydrocarbon exploration.
The analyses for the research state and existent bifurcation according to strata sequence and lithostratigraphic division in Sanbaishan Basin show that the former strata sequence is conflicting with new phenomena detected in the field, there are not any double-peaking association of volcanic rocks and nappe structure in Sanbaishan area.
According to the Principles of sequence stratigraphy,by means of some data of coring,drilling log and well logging,we make classification and contrast on the strata sequence of Yanchang Formation and divide it into three sequences(SIII1,SIII2 and SIII3) and every strata sequence contains three systematic ranges: Low-water Level Systematic range,Lacustrine Transgressive Systematic range,and High-water Level Systematic range.
According to the data derived from more than 200 wells, this paper establishes the correfations between the formation sequence and the adjacent formation in the basin using the method of biostratigraphy, petrostratigraphy and paleomagnetic stratigraphy etc.
This paper introduces the bottomhole formation sequence of late Palaeozoic in east Bachu block dome in Tarim Basin, and according to vertical and horizontal distribution regularity of sporopollen fossile of late Palaeozoic in this block, divides them into 8 sporopollen complexes.
Comprehensive geologic researches with multi disciplinaries, such as geology, seismic and logging, are performed in combination with advanced technological software, in which high resolution seismic record synthesis, 3D fine structure interpretation, formation sequence delineation as well as reservoir inversion are involved. The results show reservoir and trap features of Leng 124 14 30 well area are as follows: 1) target zones lie in Late Tertiary Sha3 formations with complex structures and two sets of faults developed in east north and west north;
The analysis of facies associations revealed that the formation was deposited as a symmetrical transgressive-regressive rock succession representing a common stratigraphic sequence.
The bottom of the stratigraphic sequence of the Dzhugdzhur deep-seated granulite complex was determined to consist of a stratified metabasite-enderbite association.
2(a), (b)), reflecting the evolutional difference of oceanic environment and stratigraphic sequence between the upper and lower layers separated by the depth of 160 cm.3.Through a correlation of δ18O values, the core from No.
Human beings' activities on tidal flat have disturbed the vertical distribution of sediments in stratigraphic sequence and accelerated the sedimentation rates.
Measurements of ground resistivity or radar surveys in a raster of 0.5 or 0.5×0.05?m, respectively, are used to gain information on archaeological structures and on the main stratigraphic sequence of sites covering up to 0.5?ha per day.
The forming phases are in the nanometer size range; the structure and morphology of the involved solid/solid interfaces exerts a strong influence on the reaction kinetics and on the phase formation sequence.
Data are presented on the formation sequence of metallic, carbide, and intermediate oxide phases in the carbon reduction of CoWO4 and NiWO4.
Two of the genes, AtU4.1 and AtU4.2, contain all the transcriptional signals known to be essential for U-snRNA gene activity in dicot plants: the Upstream Sequence Element (USE), the -30 TATA box and the downstream 3' end formation sequence.
The formation sequence was determined for several ions.
The phase formation sequence for the slow solid-state reaction was determined to be: NiAl3→ Ni2Al3→ NiAl → NiAl (Al-rich) + Ni3Al → NiAl.