1 10 1 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/525a241f1ce2f94ad242f5ec092f3c76.jpg cde1d2a26fd2c6910cebfd1899914898 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/689c24718bf255b4704657c58dcc5233.jpg 3c71ef349643240db6d58e500485eba3 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/d2711c16055d4ee6c63aeb3d711fcc80.jpg 166a017771d3f3e68a9511e71f97d465 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/bc9f99fb9db7ea2ca968f0e6a1eabe25.jpg 8873cd3567483ef43a551eb10aaafbca https://wserv3.esc.cam.ac.uk/p1acollections/files/original/6ed13a674224bdc3c93b262cc6e97792.jpg a7687b21c3602304b9ca9de2153202a4 https://wserv3.esc.cam.ac.uk/p1acollections/files/original/0b64b5226c627127a81eb64a3ee7a171.jpg e32098b5ba06e5cd80f55eaefc43cf8b https://wserv3.esc.cam.ac.uk/p1acollections/files/original/30f248264c6c30136e90aa83eac8eeef.jpg 9fca7631e1dbb5a6faa2dc37bd104852 Physical Object An inanimate, three-dimensional object or substance. Note that digital representations of, or surrogates for, these objects should use Moving Image, Still Image, Text or one of the other types. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource <h2><strong>L350<br /></strong></h2> <h2>Limestone, argillaceous</h2> Subject The topic of the resource <h3>Age</h3> <div class="element-text"> <p>Jurassic</p> <h3>Location</h3> <div class="element-text"> <p>Purbeck<br />Near Salisbury</p> </div> </div> Description An account of the resource <div class="element"> <h3>Hand Specimen</h3> <div class="element-text"> <p>Pale yellow-grey mudstone containing the fossil remains of a<span> </span><span>small arthropod with a segmented exoskeleton.</span><span> </span><br />The rock is banded and shows some surface discolouration due to weathering.<br />Rock fizzes with acid, so contains carbonate.<span> </span><br />This is a soft, though well consolidated limestone (the surface has been scratched).</p> </div> </div> <div class="element"> <h3>Thin-section</h3> <div class="element-text"> <p>Moving across the slide, perpendicular to the laminations, there are alternations (gradual transitions) between calcareous mudstone and<span> </span><a href="/p1acollections/items/show/176">argillaceous</a><span> </span>limestone. One band is rich in angular quartz grains (0.1 to 0.2 mm), and contains carbonate shell fragments.</p> <p>Calcite mudstone – fine-grained mosaic of calcite, small proportion of transparent brown impurity and a few small grains of quartz.</p> <p>Argillaceous limestone – even finer grained calcite mosaic, more abundant brown material (probably organic) than in the calcite mudstone.</p> </div> </div> <div class="element"> <h3>Rock History</h3> <div class="element-text">Low energy, aqueous environment.</div> </div> <div class="element"> <h3>Advanced Notes</h3> <div class="element-text">The fossil remains are those of Archaeoniscus, a small crustacean (which belongs to the arthropods), of supposed freshwater origin. With this extra knowledge it may be inferred that the rock was deposited in fresh water.</div> </div> <div class="element"></div> <div class="element"></div> <div class="element"> <h3>Rock Name</h3> <div class="element-text">argillaceous limestone</div> </div> aqueous arthropod fossil low energy