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...\displaystyle \sum_i (x_{i}-\bar{x})^2 \times \displaystyle \sum_i (y_{i}-\bar{y})^2}}</math> * <math> \bar{x}, \bar{y}</math> = corresponding sample (arithmetic) means

| <math>\bar{k} = \displaystyle\frac{1}{H_{t}} \displaystyle\sum\limits_{i=1}^{N}k_{i}h_ | <math>\bar{k} = H_{t} \left(\displaystyle\sum\limits_{i=1}^{N}\displaystyle\frac{h_{i}

...hows the paleoenvironments of various microfossil groups. The width of the bar represents the relative importance of each microfossil group.

...ty. Depositional features include [[distributary channel]]s, [[river-mouth bar]]s, [[interdistributary bay]]s, [[tidal flat]]s, [[tidal ridge]]s, [[beache ...Distributary-mouth-bar deposits]] (prodelta distal bar, distributary-mouth bar)

...bility of various layers (''σ'') divided by the mean permeability (<math>(\bar{k})</math>), as given in the following equation: :<math>V_{\rm DP} = \sigma/\bar{k}</math>

...ox{PI} = \frac{q}{\bar{p} - p_{\rm wf}} \mbox{ (for oil)} = \frac{q\mu B}{\bar{p}^{2} - p_{\rm wf}^{2}} \mbox{ (for gas)}</math> * <math>\bar{p}</math> = initial or current average reservoir pressure (psia)

| colspan = 5 | ''Offshore bar'' ...ands into lagoonal or basinal shales and silts. || rowspan = 3 | ''Barrier bar'' || colspan = 4 | ''Pinch-out into lagoonal shale''

...ir source area.<ref name=Stonecipher&May1990 /> Wilcox basal fluvial point bar sands are the coarsest and contain the highest proportion of nondisaggregat * Chamosite characterizes distributary-mouth-bar sands rapidly deposited in the freshwater–marine water mixing zone

...s. In addition, crystal boundaries are diffuse. XPL, AFeS, KFS, BDI, Scale bar = 0.07 mm.]] ...t) around the upper part of the grain has far fewer inclusions. XPL, Scale bar = 0.26 mm.]]

...ecause of the reservoir and seal facies relationships of a reef, an oolite bar, or a tidal channel?

...-sorted cross-stratified sands of the upper part of the distributary-mouth bar (bay fill sequence). I. Alternating silts and silty clays of the overbank s ...ming the upper sand body. The upper unit is essentially distributary-mouth bar deposits associated with the prograding distributary. The lowermost part of

[[file:M91Ch11FG70.JPG|thumb|300px|{{figure number|1}}A point bar cut into the underlying Ivan [[limestone]] as picked out by varying seismic ...fland, and K. Lemke, 1992, Seismic interpretation of meander channel point-bar deposits using realistic seismic modeling techniques: The Leading Edge, v.

...he top seal, the Birkhead Formation, consists of fluvial channel and point bar deposits as well as more shale-prone levee bank, crevasse splay, floodplain

...ub>2</sub> avoided) of 80-90% compared to the reference power plant (upper bar) without capture. CCS = carbon capture and storage.<ref name=Kaldietal_2009

...tes, part of the jet charges fall to the bottom of the hole, and the metal bar is recovered. The semi-expendable gun costs slightly more that an expendabl ...in the hole and the wellhead installed. The gun can be fired by dropping a bar inside the tubing.

...nnels building out into deep water will form more linear deposits known as bar fingers ([[:file:M91FG186.JPG|Figure 5]]).<ref name=Fisk_1961 /> ...ves.datapages.com/data/specpubs/sandsto1/data/a055/a055/0001/0000/0029.htm Bar-finger sands of the Mississippi delta], in J. A. Peterson and J. C. Osmond,

...l sides of bars and eroded material is added to the downstream side of the bar. Because each channel has a different depth, lateral migration of the chann ...tional area, thereby reducing velocity and causing deposition on the point-bar side of the channel.

* The “Tocito marine bar play” is a halo play, targeting low-quality reservoir adjacent to the con

...eposits. These deposits are commonly referred to as the distributary-mouth bar. If sediments deposited seaward of the river mouth accumulate faster than s ==Distributary-mouth-bar deposits==

...r temperature, 87°C (188°F); reservoir pressure, 2360 psi (18,134 kPa, 181 bar)

...conditions. Also shown are age and paleolatitudes of ice-rafted deposits (bar chart), net climate forcing CO₂+ solar luminosity (upper curved

| Barrier-bar coastline || United States || 36&deg;02'30.32"N || 75&deg;46'33.57"W [[File:M91Ch11FG70.JPG|thumb|300px|{{figure number|2}}A point bar cut into the underlying Ivan limestone as picked out by varying seismic amp

...ies and flow units do not always correspond, especially within the central bar facies. The flow units in this section of Hartzog Draw behave as a unit; th

...-northeast with low to moderate sinuosity are interpreted as channel-point bar complexes ([[:File:Methods14ch08f08.jpg|Figure 8]]). These sandstone-rich a ...ure is attributed to deposition from migrating transverse and longitudinal bar forms that are typical of sandy, braided river systems. The well-defined mu

...ine break is generally coincident with the seaward end of the stream mouth bar in a delta or the upper shoreface in a beach environment. This change in de

M91FG108.JPG|{{figure number|5}}The barrier bar-shoreface interval of the Brent Group reservoir in the Thistle field, UK No ...PG|Figure 7]]). Washover fans form when storms pitch sand over the barrier bar into the lagoonal area. Flood-tidal deltas develop as a result of the tidal

...ward end of a stream-mouth [http://geonames.usgs.gov/apex/f?p=136:8:0::::: bar] in a delta or the upper shoreface in a beach environment.<ref name=ch04r70

...uantitative petrographic data are collected, they can replace the original bar profile data. ...and W. R. van der Vlugt, 1978, Simulation of water injection in a barrier-bar- type, oil-rim reservoir in Nigeria: Journal of Petroleum Technology, v. 30

...shifting and bar migration of braided rivers produces vertical stacking of bar deposits can be separated by mudstones. And the repeat of meander migration

...-1). Net sandstone isopach contours are [[length::10 ft]] (3 m); the scale bar is [[depth::3000 ft]] (1000 m).

...gravels with subordinate mud-rich beds of varying thickness and dimension. Bar and channel deposits are typically elongate in the paleocurrent direction. [[Distributary mouth bar]]s and channel deposits ([[:file:lithofacies-and-environmental-analysis-of-

...ure'', which is often quoted in pressure units of bars at [[length::1 m]] (bar meters). Another measure of the performance of the array is the ''peak-to-b

...serves as the basis for determining current drainage area pressure, <math>\bar{p}</math>, for a well with some pressure depletion in its drainage area cau

...ided river systems under normal conditions. What mud there is, collects as bar tops or represents fragments of floodplain silts and muds. The shales tend

...deposited by meandering stream activity. Few complete fining-upward point bar cycles (gravels to sands to shales) are present. Instead, erosional cuts an

...small to large lengthscales, this hierarchy consists of mouth bars, mouth-bar assemblages, and delta lobes<ref name=Bhttchry2006>Bhattacharya, J. P., 200 ...s section]]s: (1) in fluvial-dominated deltas, distributary mouth bars and bar complexes have complex 3-D geometries that can shift along depositional str

...d (right) zircons. Red dots represent ion microprobe scan locations. White bar is about 50 μm.]]

...gamma ray, spontaneous potential, resistivity, and neutron/density. Black bar in depth track indicates cored interval. Fort Collins Member designated F.C ...its in the past have been noted by several authors and attributed to chalk bar formation (associated with bottom water currents), compensational stacking,

[[Image:Size of Kepler Planet Candidates.jpg|thumb|330px|right|Bar chart showing the size distribution of observed [[Kepler (spacecraft)|Keple

...ial dominated and, to a lesser degree, marginal marine deltaic and barrier bar

...l sandstones have abrupt terminations of sand bars. The individual channel bar and point bars deposits are interleaved with shales and other muddy sedimen

...es are outlined in red, and the escape paths are shown in green. The scale bar in the legend represents 12,500 m (41,010 ft).