Abstract
ABSTRACT Five distinctive limestone micro-facies (oolitic, oolitoid, micro-conglomeratic, shelly, and nodular) are recognised, each of which may be present within one individual bed. They generally indicate shallow water, restricted lagoonal conditions inimical to organic life. Sometimes the conditions were modified, allowing organisms such as worms and ostracods to proliferate; rarely, a widespread linkage of adjacent lagoons allowed a more comprehensive fauna to develop. The limestones are invariably associated with shales into which they normally sharply grade.
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