This locality shows the oolitic ironstones and a sandy beds of the Abbotsbury Ironstone, a marine deposit of Kimeridgian (Upper Jurassic) age. This unusual facies yields typical ammonites of the Cymodoce Zone making it possible to equate these distinctive and arealy restricted rocks with the more normal clays and silts seen in this part of the Lower Kimmeridgian elsewhere in Dorset. This is an important site for its faunas and for the information it affords on marine sedimentation and environments in the late Jurassic.
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