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1 Markets I: The Ecosystem and Exchange-Traded Marketsবাজার অনলাইন 2 Markets II: Rates, FX and Creditবাজার অনলাইন 3 Markets III: Commodities, Energy and Cryptoবাজার অনলাইন 4 Quantitative Methodsপদ্ধতি অনলাইন 5 Derivatives and Volatilityডেরিভেটিভস অনলাইন 6 Rates, Credit, XVA and Riskসুদহার, ঋণ ও ঝুঁকি অনলাইন 7 Research Craft: Predictors, Backtests, Measurement, Portfoliosগবেষণা অনলাইন 8 Strategies I: Equities and Futuresকৌশল অনলাইন 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desksকৌশল অনলাইন 10 Microstructure and Executionএক্সিকিউশন অনলাইন 11 Market Making and High-Frequency Tradingমার্কেট মেকিং অনলাইন 12 Machine Learning for Marketsমেশিন লার্নিং অনলাইন 13 Low-Latency Softwareপ্রযুক্তি অনলাইন 14 Networks, Hardware and Trading Infrastructureপ্রযুক্তি অনলাইন 15 Research, Data and Risk Platformsপ্রযুক্তি অনলাইন 16 The Desk and the Firmপ্রতিষ্ঠান অনলাইন 17 The Industry: Firms, Roles and Careersক্যারিয়ার অনলাইন 18 Interviews I: Maths, Probability and Speedক্যারিয়ার অনলাইন 19 Interviews II: Markets, Trading Games and the Final Roundক্যারিয়ার অনলাইন 20 Interviews III: Codeক্যারিয়ার অনলাইন
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Earth and Space Sciences · পরিভাষা

Dyke; sill; pluton কী?

অন্য নাম: intrusion · dyke · sill · pluton

Definition 17.8 High School Earth and Space Sciences · অধ্যায় 17 — Igneous Rocks

An intrusion is a body of igneous rock that crystallised inside other rocks. A dyke is a sheet of igneous rock that cuts across the layers or structures of the rocks it intrudes; a sill is a sheet that lies parallel to the layers, between them. A pluton is a large intrusion of any shape, formed at depth; many plutons joined together form a batholith (Chapter 22).

Intrusions (a drawing, not to scale). A pluton crystallises at depth; dykes cut across the layers of the rocks above it, one of them feeding a volcano; a sill spreads between two layers. Only erosion of the rocks above lays these bodies bare at the surface.
Intrusions (a drawing, not to scale). A pluton crystallises at depth; dykes cut across the layers of the rocks above it, one of them feeding a volcano; a sill spreads between two layers. Only erosion of the rocks above lays these bodies bare at the surface.
A sheet of basaltic magma cooling by conduction (computed model). Left: the time it takes to solidify, against its thickness, on logarithmic axes: a straight line of slope 2, the time growing as the square of the thickness. Right: temperatures across a sill 20\, m thick (shaded), intruded at 1150 C into rock at 50 C. The edges fall below the solidus at once, the centre only after about two and a half years.
A sheet of basaltic magma cooling by conduction (computed model). Left: the time it takes to solidify, against its thickness, on logarithmic axes: a straight line of slope 2, the time growing as the square of the thickness. Right: temperatures across a sill 20 m20\,\mathrm{m} thick (shaded), intruded at 1150∘C1150{}^{\circ}\mathrm{C} into rock at 50∘C50{}^{\circ}\mathrm{C}. The edges fall below the solidus at once, the centre only after about two and a half years.
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