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Kittatinny Formation
The Ordovician Kittatinny Formation or Kittatinny Limestone is a Dolomite (mineral), dolomitic limestone geological formation, formation in New Jersey. The Kittatinny Limestones are located primarily in the Kittatinny Valley where it lies above the Ordovician Martinsburg Formation within the long valley running from Picatinny Arsenal in Rockaway Township, New Jersey, Rockaway Township, southwest toward Chester Township, New Jersey, Chester Township. It overlies the Cambrian Hardyston Quartzite. The Kittatinny is now usually considered a Supergroup, rather than a Formation, as it includes several other Group (stratigraphy), Groups and Formations. Drake and Lyttle made this revision in 1980. The Supergroup includes the Leithsville Formation, Allentown Dolomite, and Beekmantown Group (which in turn includes the Stonehenge Limestone, Rickenbach Dolomite, Epler Formation, and Ontelaunee Formation). Richard Dalton wrote a more recent review of the stratigraphy of the Kittatinny. The K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambrian
The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million years ago (mya) to the beginning of the Ordovician Period mya. Its subdivisions, and its base, are somewhat in flux. The period was established as "Cambrian series" by Adam Sedgwick, who named it after Cambria, the Latin name for 'Cymru' (Wales), where Britain's Cambrian rocks are best exposed. Sedgwick identified the layer as part of his task, along with Roderick Murchison, to subdivide the large "Transition Series", although the two geologists disagreed for a while on the appropriate categorization. The Cambrian is unique in its unusually high proportion of sedimentary deposits, sites of exceptional preservation where "soft" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
