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Gemstones, Minerals & Fossils
Fossils
Graphtolite fossils in slate
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<blockquote data-quote="user 4386" data-source="post: 425271" data-attributes="member: 4386"><p>Cleavage and bedding are different things - cleavage forms during later folding. Unfortunately cleavage is often not parallel to bedding, so you need to find where they are parallel. Cleavage is best developed in slates, and in Victoria the folding is so tight that one can find plenty of places where cleavage and bedding are parallel. Cleavage is usually far weaker in coarser grained sedimentary rocks such as siltstones and sandstones, and they more often break along the bedding.</p></blockquote><p></p>
[QUOTE="user 4386, post: 425271, member: 4386"] Cleavage and bedding are different things - cleavage forms during later folding. Unfortunately cleavage is often not parallel to bedding, so you need to find where they are parallel. Cleavage is best developed in slates, and in Victoria the folding is so tight that one can find plenty of places where cleavage and bedding are parallel. Cleavage is usually far weaker in coarser grained sedimentary rocks such as siltstones and sandstones, and they more often break along the bedding. [/QUOTE]
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Gemstones, Minerals & Fossils
Fossils
Graphtolite fossils in slate
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