slaty structure
51Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… …
52Henry Clifton Sorby — (May 10, 1826 ndash; March 9, 1908), English microscopist and geologist, was born at Woodbourne near Sheffield in Yorkshire.He attended Sheffield Collegiate School.He early developed an interest in natural science, and one of his first papers… …
53Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …
54Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …
55Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
56Zamboanga City — City of Zamboanga Ciudad de Zamboanga   Chartered, Independent and Highly Urbanized City   …
57tuatara — /tooh euh tahr euh/, n. a large, primarily nocturnal, lizardlike reptile, Sphenodon punctatum, of islands near the coast of New Zealand: the only surviving rhynchocephalian. Also, tuatera /tooh euh tair euh/. Also called sphenodon. [1810 20; <… …
58Chlorite — Chlo rite, n. [Gr. ? (sc. ?), fr. chlwro s light green.] (Min.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia. [1913 Webster] {Chlorite… …
59Chlorite slate — Chlorite Chlo rite, n. [Gr. ? (sc. ?), fr. chlwro s light green.] (Min.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia. [1913 Webster]… …
60Bunting (bird) — For other uses, see bunting. Buntings Yellowhammer Emberiza citrinella Scientific classification …
