This specimen is a fossiliferous limestone. The limestone is grain supported with a predominantly sparite cement matrix. Allochems constitute about 75 percent of slide area. These criteria define the limestone as a grainstone. Allochem composition is about 40 percent ooid, 40 percent bioclast, 15 percent peloid, and 5 percent intraclast. These estimates and degree of sorting classify this limestone as a rounded oosparite. Identifiable intraclasts are mostly 1.5 mm and smaller. Most bioclasts are heavily rounded and difficult to identify, but characteristic extinction patterns and crystal habits indicate enchinoderms and Composita sp. brachiopods were among the forms present. Most bioclasts have micritic envelopes. Maximum brachiopod size is about 1.1 mm and maximum identifiable echinoderm is 1.3 mm. Ooids and the less common peloids have similar size ranges with a maximum near 1.1 mm, a minimum of .08, and a modal range around .3 to .7 mm. Secondary quartz is extremely rare and occurs within particles in a size range around .2 mm. One likely detrital quartz grain was noted with a maximum dimension of .9 mm. Extant voids are rare at less than 1 percent of slide area and mostly occur as halos around grains, reflecting preferential removal of micritic envelopes and the outer rinds of ooids. On rock surfaces this sort of erosion would liberate the entire grain, and this pattern is visible on the hand sample. Iron hydroxide stains a small number of the ooid and peloids and is responsible for the slight yellowish color of the hand sample. The degree of allochem preservation suggests lithification prior to significant compaction.
This specimen is a fossiliferous limestone. The limestone is grain supported with a predominantly sparite cement matrix. Allochems comprise around 80 percent of non-void slide area. These criteria define the limestone as a grainstone. Identifiable Allochem composition is about 75 percent peloid. The remaining 25 percent is composed of bioclasts. These estimates and degree of sorting characterize the limestone as a fossiliferous rounded pelsparite. Brachiopod species predominate, including Composita sp. Likely echnioderm fragments are also present and occasionally present syntaxial overgrowth. Maximum peloid size is .75 mm, minimum is .15 and a modal range is around .25 to .5 mm. Maximum dimensions for brachiopod fragments is .9 mm. A modal size for brachiopod fragments is around .5 mm in the maximum dimension. Authigenic quartz is extremely rare and usually fibrous in habit. Voids are common and constitute about 20 percent of slide area. These voids are almost entirely the result of the dissolution of micritic peloids. This pattern suggests the voids are secondary and perhaps a relatively recent phenomenon of near surface weathering.