- oolitic iron ore deposit
- 鲡状铁矿床
English-Chinese geology dictionary (英汉地质大词典). 2013.
English-Chinese geology dictionary (英汉地质大词典). 2013.
mineral deposit — Introduction aggregate of a mineral in an unusually high concentration. About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… … Universalium
Chamosite — A 3.6 by 2.2 cm of Axinite Fe covered on both sides by greenish microcrystals of Chamosite. General Category Phyllosilicate … Wikipedia
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… … Universalium
Mendip Hills — Coordinates: 51°18′N 2°44′W / 51.3°N 2.733°W / 51.3; 2.733 … Wikipedia