Slab of micritic algal fragment limestone, conglomerate and limestone unit

Polished slab from a large rounded clast of limestone in the conglom-
eratic zone. The main section is composed mostly of tiny fragments of
algal plates in a micritic matrix. A few more complete algal plates are
scattered throughout, with greater concentration near the bottom. The
upper surface may approximate a bedding surface from the original
limestone bed, but other edges cut across original bedding. The smaller
section of rock at the lower right contains mostly fragments of algae and
crinoids (white) with scattered ostracodes, and clearly originated in a
different source bed of limestone. The two limestone types were
amalgamated along a clay-lined suture. The rock has a mottled texture
with varied orientation of skeletal grains as a result of bioturbation (see

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