Most M.D.'s recommend that it is best to wait until at least the 1st day of your missed period before you take a pregnancy test. [ Source: http://www.chacha.com/question/how-many-days-should-you-wait-after-a-missed-period-before-taking-a-pregnancy-test ].
It is typically found conformally overlying the Marcellus Formation, and underlying the Tully Limestone (where present). The Mahantango has been divided into four members: 1  Tully Limestone: a fossiliferous calcaerous shale. 2  The Tully is a conspicuous formation, which separates the Mahantango from the Hamilton Group.3  Sherman Ridge: Olive gray, fossiliferous, claystone and siltstone with interbedded fine sandstones coarsening upward.t is named for the North branch of the Mahantango Creek in Perry and Juniata counties in Pennsylvania. It is a member of the Hamilton Group, along with the underlying the Marcellus Formation Shale.
In well 41/24a-2, the base of the Bowland Shale Formation is marked by a sharp downhole increase in velocity and decrease in gamma-ray response, corresponding to the top of the highest limestone bed of the Yoredale Formation.The base of the formation has not been penetrated in other North Sea wells.Definition of Upper Boundary: The top of the formation is taken at the base of the Millstone Grit Group over most of the Pennine Basin and at the base of the Morridge Formation in Staffordshire and the East Midlands.n the Craven Reef Belt, in the Malham Cove/Gordale Scar area, the fissile mudstones with nodules and thin beds of ironstone and limestone of the Bowland Shale Formation, rest unconformably and diachronously on the Malham Formation (Great Scar Limestone Group), or Yoredale Group.