نتایج جستجو برای: stratigraphic units

تعداد نتایج: 175622  

2014
Mu Huang Dapeng Li Xianyong Han

The complexity of stratigraphic architecture makes the geological modeling over-reliance on labor, this means more timeconsuming and inefficiency. It is a difficult problem in using only borehole data in engineering survey for computerized automatic modeling to quickly establish the stratigraphic model. We joined connectivity criteria, as well as virtual drilling method, using an improved “laye...

2013
Jesse Koch Tracy D. Frank

Recent studies suggest a marked expansion of glacial ice across much of Gondwana beginning in the earliest Permian. Because expansion of glacial ice results in a lowering of sea level, the imprint of ice expansion should be evident worldwide as significant exposure event, hiatuses, or other evidence for sea level drop at or near the Pennsylvanian–Permian boundary. This literature review investi...

1979
R. H. Karst G. V. White

The top of the Gething Formation is one of the more important formational picks routinely performed by the oil and gas industry during their exploratory and development drilling as this horizon is very c:on-tinuous through northeastern British Columbia and much of northern Alberta. The name Bluesky is given to the rock unit which occupies this stratigraphic level, namely a sandstone-conglomerat...

2003
R. Lee Lyman Michael J. O'Brien Nels C. Nelson

Many versions of the history of Americanist archaeology suggest there was a "stratigraphic revolution" during the second decade of the twentieth century—the implication being that prior to about 1915 most archaeologists did not excavate stratigraphically. However, articles and reports published during the late nineteenth century and first decade of the twentieth century indicate clearly that ma...

2005
F. Budillon

The shallow marine Late Holocene wedge of the northern Salerno Bay shelf (Southern Tyrrhenian Sea) discloses the presence of four decimetric shelf-tapering sand beds. Their internal features, depicted by cores analysis and their stratigraphic position, revealed by VHR seismic investigations, inferred sandy layers as being the result of flash deposition, storm controlled, thus episodic. Stratigr...

Journal: :journal of sciences, islamic republic of iran 2013
m. taherpour khalil abad

abderaz formation is one of the upper cretaceous formations in the kopet-dagh sedimentary basin. a stratigraphic section from the mentioned formation is selected for detailed systematic description with regard to echinoids. numerous well preserved representatives of the families mircrasteridae wright, 1857 and echinocorythidae lambert, 1920 are described from the ghaleh-zoo stratigraphic sectio...

Journal: :British journal of earth sciences research 2023

Palynological and sedimentological studies were conducted on sixty ditch cutting rock samples from interval 460 to 4550 feets of VIC-97 well, located at OML 38, Northern Depo-belt, Niger-Delta, delineate lithofacies units the age succession. Standard methods palynological sample analysis used disaggregate palynomorphs matrix. Log signatures, sand/shale ratios, textural attributes, accessory min...

Journal: :Brazilian Journal of Geology 2021

With standardized methodology and nomenclature, the sequence stratigraphy aims to characterize multi-scale cyclical units of genetically related rocks into a hierarchical chronostratigraphic framework. From facies basin scale, stacking patterns stratigraphic surfaces are recognized as elements. In parallel, Earth sciences have developed sophisticated understanding geological processes (tectonic...

Journal: :British journal of earth sciences research 2023

Palynofacies analyses of the strata penetrated by TTtex-1 Well were carried out with aim investigating stratigraphic sequence to establish palynostratigraphic zones, relative age and paleoenvironment deposition. Sixty-two ditch cutting samples within interval 2179 – 3523 m analyzed. The use acid in sample preparation for palynofacies used. result produced relatively low abundant occurrences pol...

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