Formation interval

As final solution formats, interval vector decision policies, X p, replace their pointwise counterparts, x p. Thus, a decision policy, Xpp, in the context of this section is an interval vector whose components are intervals of decision variables associated with one or more of the infimal decision units. No connection variables or disturbance factors are involved in their definition ... 

Diverting agents assist in distributing acid more uniformly through the perforated formation interval (141). These are usually oil-soluble hydrocarbon resin particles. They may be dissolved by post-acid injection of xylene or similar solvents. Oil-soluble waxes, naphthalene, and solid organic acids such as benzoic acid have also been used (142). Best results are obtained using a broad range of particle sizes. 

Nyquist, L., Lindstrom, D., Mittlefehldt, D. et al. (2001c) Manganese-chromium formation intervals for chondrules from the Bushunpur and Chainpur meteorites. Meteoritics and Planetary Science, 36, 911-938. 

Thrane, K., Bizzarro, M. and Baker, J. A. (2006) Extremely brief formation interval for refractory inclusions and uniform distribution of Al-26 in the early solar system. Astrophysical Journal, 646, L159-162. 

This 4.53 Gyr represents the time that has elapsed since the last high-temperature event, which determined the time t = 0. For the oldest meteorites, the formation interval can also be estimated. Short half-life (1-100 Myr) radionuclides were present in the young parent body the daughters can be detected. This is the case of 129Xe (daughter of 129I with a half-life of 16 Myr). Since 129I was frozen in the parent body matrix, this means that the accretion process took a short time (a few million years). 

Pepin R. O. and Phinney D. (1976) The formation interval of the Earth. Lunar Planet. Sci. VII. Lunar and Planetary Institute, Houston, pp. 682-684. 

In most extensional basins it can be assumed that minimum total stress is horizontal, and maximum total stress (S,) is equivalent to vertical lithostatic load. From Eq. (3) it can also be predicted that minimum total stress plus tensile rock strength is equivalent to the maximum formation fracture pressures that are measured from leak-off tests performed after drilling out casing shoes (LOT), or more approximately from formation interval tests (FIT). As suggested by Gaarenstroom et al. (1993), the lower bound envelope of LOT values may correspond to the... 

Structure-contour line datum is base of Blaine Formation interval is 6 meters... 

Amelin, Y., Krot, A., and Twelker, E., 2004. Pb isotopic age of the CB chondrite Gujiba and the duration of the chondrule formation interval (Abstract). Geochim. Cosmochim. Acta, 68(Suppl.), A759. 

Meteorites yield a variety of ages, each reflecting a specific episode in their histories. Some of these "ages" are indicated in Figure 1 the end of nucleosynthesis in a star (i) the first formation of solids in the Solar system (7) melt crystallization in parent bodies (75) excavation of meteoroids from these bodies and the meteorite s fall to Earth. Other events, like volcanism or metamorphism on parent objects can be established by gas retention as can formation intervals (based on extinct radionuclides) measuring the time between the last production of new nucleosynthetic material and mineral formation in early Solar System materials 14). In the following sections we discuss some of these ages and the information that they convey. 

---