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1 Primary & Middle School Mathematics1–9 年级在线 2 High School Mathematics10–12 年级在线 3 University Mathematics — Year 1本科一年级在线 4 University Mathematics — Year 2本科二年级在线 5 University Mathematics — Year 3本科三年级在线

1 Primary & Middle School Physics1–9 年级在线 2 High School Physics10–12 年级在线 3 University Physics — Year 1本科一年级在线 4 University Physics — Year 2本科二年级在线 5 University Physics — Year 3本科三年级在线

1 School Chemistry — Grades 1 to 121–12 年级在线 2 University Chemistry — Year 1本科一年级在线 3 University Chemistry — Year 2本科二年级在线 4 University Chemistry — Year 3本科三年级在线

1 Primary & Middle School Biology1–9 年级在线 2 High School Biology10–12 年级在线 3 University Biology — Year 1本科一年级在线 4 University Biology — Year 2本科二年级在线 5 University Biology — Year 3本科三年级在线

1 Primary & Middle School Earth and Space Sciences1–9 年级在线 2 High School Earth and Space Sciences10–12 年级在线 3 University Earth and Space Sciences — Year 1本科一年级在线 4 University Earth and Space Sciences — Year 2本科二年级在线 5 University Earth and Space Sciences — Year 3本科三年级在线

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 Geological cross-section, topographic profile, vertical exaggeration？

又称： geological cross-section · topographic profile · vertical exaggeration

Definition 5.1 University Earth and Space Sciences — Year 1 · 第 5 章 — Cross-Sections

A geological cross-section is a drawing of the rock units and structures in a vertical plane through the ground, along a line drawn on the map. Its upper edge is the topographic profile, the curve of ground elevation along the line. The vertical exaggeration $e$ of a section is the ratio of its vertical scale to its horizontal scale; a section is true to scale when $e = 1$ .

Building a section (schematic): the crossings of the contour lines with the line X–Y are carried down to their elevations to give the topographic profile; a contact crossing the line is carried down to the profile and drawn into the ground with its apparent dip.

Section C–D across the Varden Hills, from the model of the region. Top: vertical exaggeration e = 3; bottom: the same section true to scale (e = 1), where the 12 limbs look as gentle as they are. Colours as in the geological map of ; the fault (thick line) is the normal fault, its eastern block downthrown. The red line is the tunnel of the problem; B1–B3 are boreholes. — Section C–D across the Varden Hills, from the model of the region. Top: vertical exaggeration $e = 3$ ; bottom: the same section true to scale ( $e = 1$ ), where the $12{}^{\circ}$ limbs look as gentle as they are. Colours as in the geological map of Chapter 4; the fault (thick line) is the normal fault, its eastern block downthrown. The red line is the tunnel of the problem; B1–B3 are boreholes.

Section C–D across the Varden Hills, from the model of the region. Top: vertical exaggeration e = 3; bottom: the same section true to scale (e = 1), where the 12 limbs look as gentle as they are. Colours as in the geological map of ; the fault (thick line) is the normal fault, its eastern block downthrown. The red line is the tunnel of the problem; B1–B3 are boreholes. — Section C–D across the Varden Hills, from the model of the region. Top: vertical exaggeration $e = 3$ ; bottom: the same section true to scale ( $e = 1$ ), where the $12{}^{\circ}$ limbs look as gentle as they are. Colours as in the geological map of Chapter 4; the fault (thick line) is the normal fault, its eastern block downthrown. The red line is the tunnel of the problem; B1–B3 are boreholes.

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