astronomy

Louis Caryl Graton

Louis Caryl Graton is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Louis Caryl Graton rather than just read about it. In short: Louis Caryl Graton (1880–1970), American geologist, chemist and educator, began his career in 1900 as assayer for Ledyard Gold Mines Ltd., near Rockdale, Ontario. He moved on to Canadian Goldfields Ltd. later in 1900, then entered McGill University as a graduate student, studying many of the famous mines of Ontario and Quebec.

Key takeaways

Louis Caryl Graton belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Louis Caryl Graton to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Louis Caryl Graton from memory before moving on to harder problems.

Reference excerpt

Louis Caryl Graton (1880–1970), American geologist, chemist and educator, began his career in 1900 as assayer for Ledyard Gold Mines Ltd., near Rockdale, Ontario. He moved on to Canadian Goldfields Ltd. later in 1900, then entered McGill University as a graduate student, studying many of the famous mines of Ontario and Quebec. He continued his studies at Cornell University in 1902–1903. In 1903, Graton was hired by Waldemar Lindgren of the US Geological Survey to assist Lindgren's restudy of the Cripple Creek, Colorado goldfields. This began an association that lasted until Lindgren's death in 1939. While at the USGS, he studied ore deposits in the southern Appalachians, New Mexico and California. In 1909, Graton was appointed assistant professor of mining geology at Harvard; he advanced to full professor in 1912, a position he would hold for 37 years. Graton made important contributions in applying the science of geology to the practical job of finding ore. He was notably successful in "selling" geology to the mining industry, in an era when many companies doubted the value of employing mining geologists. He became professor emeritus in 1949. Graton began a long association as a consultant for the Cerro Corporation (then the Cerro de Pasco Copper Corp.) in 1920. He was an active consultant until 1950. From 1945 to 1967 he served on the Cerro Board of Directors. For Cerro and other industrial clients, he set up modern geological departments and trained staff geologists to high professional standards. L. C. Graton occupied a pre-eminent position in economic geology for half a century. He was president of the Society of Economic Geologists in 1931 (winning its Penrose Gold Medal in 1950), among many other awards and honors. He left a significant legacy of scientific papers and reviews. His bibliography is included in the Graton-Sales memorial volume, cited below.

See also Gratonite, a mineral named to honor Graton.

References

"Louis Caryl Graton" in Ore Deposits of the United States, 1933–67, the Graton-Sales volume, New York, AIME, 1968. LC Catalog # 68-24170. Includes bibliography. Contributions to economic geology, 1909, Part I, Metals and nonmetals except fuels--Copper, US Geological Survey Bulletin No. 430-B (1910) Reconnaissance of some gold and tin deposits of the southern Appalachians, with notes on the Dahlonega mines with Waldemar Lindgren, US Geological Survey Bulletin No. 293 (1906) The ore deposits of New Mexico with Waldemar Lindgren and C.H. Gordon, US Geological Survey Professional Paper No. 68 (1910)

External links Works by or about Louis Caryl Graton at the Internet Archive Memorial by CS Hurlbut Jr.

Worked examples

Example 1 — a first encounter with Louis Caryl Graton

Start with the simplest possible case. Write down what Louis Caryl Graton claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Louis Caryl Graton before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Louis Caryl Graton ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Louis Caryl Graton

In research: Louis Caryl Graton appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Louis Caryl Graton in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Louis Caryl Graton is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1880 births, 1970 deaths, 20th-century American chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Louis Caryl Graton outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Louis Caryl Graton in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Louis Caryl Graton means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Louis Caryl Graton out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Louis Caryl Graton in simple terms?

Why does Louis Caryl Graton matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Louis Caryl Graton?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Louis Caryl Graton.