- chemical sedimentary deposit
- 化学沉积矿床
English-Chinese geology dictionary (英汉地质大词典). 2013.
chemical sedimentary deposit
Look at other dictionaries:
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
Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… … Wikipedia
Sedimentary exhalative deposits — (abbreviated as SEDEX from SEDimentary EXhalative) are ore deposits which are interpreted to have been formed by release of ore bearing hydrothermal fluids into a water reservoir (usually the ocean), resulting in the precipitation of stratiform… … Wikipedia
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
sedimentary rock — A consolidated deposit of clastic particles, chemical precipitates, or organic remains accumulated at or near the surface of the earth under normal low temperature and pressure conditions. Sedimentary rocks include consolidated equivalents… … Glossary of landform and geologic terms
deposit — GLOSSARY OF VOLCANIC TERMS Earth materials that have accumulated by some natural process (Gardner et al., 1995). Deposits may be the result of volcanic (e.g. lavas or pyroclastic), sedimentary (either clastic or chemical), or hydrothermal… … Glossary of volcanic terms
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
Volcanogenic massive sulfide ore deposit — Volcanogentic massive sulfide ore deposit at Kidd Mine, Timmins, Ontario, Canada, formed 2.4 billion years ago on an ancient seafloor. Volcanogenic massive sulfide ore deposits (VMS ) are a type of metal sulfide ore deposit, mainly Cu Zn Pb which … Wikipedia
varved deposit — Any form of repetitive sedimentary rock stratification that was deposited within a year. This annual deposit usually consists of paired contrasting layers (varves) of alternately finer (darker) and coarser (lighter) silt or clay, reflecting… … Universalium
Allchar deposit — Location … Wikipedia
loess — loessial, loessal, adj. /loh es, les, lus/, n. a loamy deposit formed by wind, usually yellowish and calcareous, common in the Mississippi Valley and in Europe and Asia. [1825 35; < G Löss < Swiss G lösch loose, slack (sch taken as a dial.… … Universalium
