How To Use hornstone In A Sentence
- During a ride to a natural tank amongst these rocky elevations, I passed from the alluvium to the sandstone, and at once met with all the prevailing plants of the granite, gneiss, limestone and hornstone rocks previously examined, and which I have enumerated too often to require recapitulation; a convincing proof that the mechanical properties and not the chemical constitution of the rocks regulate the distribution of these plants. Himalayan Journals — Complete
- Chert is sometimes called hornstone; also the term chert is often applied to any impure flinty rock, including jaspers. Tseh So, a Small House Ruin, Chaco Canyon, New Mexico :
- In the bed of the river, whose waters are beautifully clear, are hornstone rocks, dipping north-east, and striking north-west. Himalayan Journals — Complete
- hornstone" type, with porphyritic developments of silicate minerals. The Economic Aspect of Geology
- These hills are of limestone, and rounded, resting upon others of hornstone and jasper. Himalayan Journals — Complete
- The flat slabs were generally of slate or hornstone; but many of them, and all the larger ones, were of syenitic granite, split by heat and cold water with great art. Himalayan Journals — Complete
- By the banks of a deep gully here the rocks are well exposed: they consist of soft clay shales resting on the limestone, which is nearly horizontal; and this again, unconformably on the quartz and hornstone rocks, which are confused, and tilted up at all angles. Himalayan Journals — Complete
- The next two cases (21, 22) are devoted to the varieties of common quartz, including the flexible sandstones of Brazil (of which there are some larger specimens upon a separate table) and to those of the east; milk quartz; the Salzburg blue quartz, &c.; some varieties of the cat's eye; hornstones, including wood changed into hornstone: and herein begin the flints, including some specimens changing into calcedony, smalt blue calcedony from Transylvania; the Icelandic stalactical calcedony; and the fine Cornish calcedony. How to See the British Museum in Four Visits
- Chert is sometimes called hornstone; also the term chert is often applied to any impure flinty rock, including jaspers. Tseh So, a Small House Ruin, Chaco Canyon, New Mexico :
- On the banks I observed much granite, with large mica crystals, hornstone, tourmaline, and stratified quartz, with granite veins parallel to the foliation or lamination. Himalayan Journals — Complete