slaty

• “This cleavage is known as slaty cleavage, since it is most perfectly developed in fine-grained, homogeneous rocks, such as slates, which cleave to the thin, smooth-surfaced plates with which we are familiar in the slates used in roofing and for ciphering and blackboards.”

  The Elements of Geology

• “Like all the others I had recently examined, it was composed principally of quartz, ironstone and a kind of slaty rock; the low hills in front exhibiting the grey limestone, whilst patches of gum scrub were observable in many places.”

  Journals of Expeditions of Discovery into Central Australia and Overland from Adelaide to King George's Sound in the Years 1840-1: Sent By the Colonists of South Australia, with the Sanction and Support of the Government: Including an Account of the Manners and Customs of the Aborigines and the State of Their Relations with Europeans — Complete

• “No boats are passing upstream towards Devonport dockyard and the sheltered water of the Hamoaze, but a lone heron stands on the slaty foreshore.”

  The Guardian: Country diary: Mount Edgcumbe, Cornwall

• “At one end of the miles of beach the sea is silvery grey, but along its length it deepens in tone and changes in colour until by the time it reaches the other end it is a deep slaty green.”

  The Guardian: Country diary: South Uist

• “•Underlain in New Jersey by folded and faulted Ordovician Martinsburg Shale; this slaty shale is slightly more erosion resistant than the limestone underlying Ecoregions 67a and 67j.”

  Ecoregions of New Jersey (EPA)

• “•Broad, irregular rolling to hilly valleys north of the Wisconsinan terminal moraine underlain by slaty shale and fine-grained sandstone and covered by Wisconsinan-age glacial drift.”

  Ecoregions of New Jersey (EPA)

• “•Shallow, well-drained, Inceptisols and Ultisols are common in Ecoregion 67b in New Jersey, and developed from slaty shale or pre-Wisconsinan drift.”

  Ecoregions of New Jersey (EPA)

• “•Shallow, well-drained Inceptisols and Ultisols are common, and have developed from slaty shale and Wisconsinan drift; many boulders occur.”

  Ecoregions of New Jersey (EPA)

• “Discontinuous glacial drift also occurs; it is thickest between Kittatinny Mountain and Paulins Kill where till composed of sandstone and quartzite completely covers the underlying Ordovician slaty shale.”

  Ecoregions of New Jersey (EPA)

• “The photo of people on a shaly-slaty slope reminds me of similar trilobite expeditions maybe the rocks always look the same.”

  Fieldwork Friday #5

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