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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Earth and Space Sciences · 术语表

什么是 Intrusive bodies？

又称： pluton · dyke · sill · laccolith · batholith

Definition 5.10 University Earth and Space Sciences — Year 2 · 第 5 章 — Magmas and Their Emplacement

A pluton is any body of magma that solidified within the crust. A dyke is a sheet-like pluton that cuts across the layering of its host rock (or any sheet if the host has no layering); a sill is a sheet-like pluton parallel to the layering. A laccolith is a sill that has thickened by pushing up the overlying layers into a dome. A batholith is a large pluton, or an assembly of plutons, with an exposed area of more than $100\,\mathrm{km}^{2}$ .

Shapes of intrusive bodies in a layered host (schematic, not to scale): a feeder dyke cutting across the layers, a sill along a bedding plane, a laccolith doming the layers above it, a dyke cutting up to the surface, and a batholith with blocks stoped from its roof and a contact aureole.

The level of neutral buoyancy (schematic). The density of the crust increases with depth, by compaction of sediments and by the change to denser rocks; a magma of fixed density rises while it is lighter than its surroundings (shaded) and spreads out where the two densities meet.

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