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JUNE FEATURED Rock Type
Northampton Sandstone Formation
Inferior Oolite Group. Aalenian Age of the Jurassic Period
Another rock formation found in Oxfordshire, in and around the Cherwell Valley.
Sandy, ironstone, greenish grey where fresh, weathering to brown sandstone. The common iron minerals in the fresh specimen are berthierine, siderite and limonite. The lowest part is commonly muddy and less iron-rich (ferruginous). The uppermost beds are generally more-or-less ferruginous sandstone. It can include lenses of mudstone and limestone in places, and contains a fairly abundant marine fossils of bivalves, brachiopods and ammonites.
An unrivalled, wide-ranging package of events and activities
OGG delivers a super programme of affordable events and activities throughout the year - open to all. We organise conferences, lectures, field trips, guided walks, training and educational workshops.
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Although you don't have to join OGG to enjoy most of our activities (it is cheaper to participate for OGG members) we would love for you to take membership. Membership has its benefits and we would be happy to talk to you about this.
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Department of Earth Sciences,
South Parks Road,
Oxford, OX1 3AN