earth science

Helen Jeanne Skewes Plummer

Helen Jeanne Skewes Plummer is a earth science 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 Helen Jeanne Skewes Plummer rather than just read about it. In short: Helen Jeanne Skewes Plummer (7 May 1891 – 11 January 1951) was an American micropaleontologist known for her work on Gulf Coastal Plain foraminifera. She was the first female geologist hired as an employee at a petroleum company, although women had previously consulted for the industry.

Key takeaways

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

Reference excerpt

Helen Jeanne Skewes Plummer (7 May 1891 – 11 January 1951) was an American micropaleontologist known for her work on Gulf Coastal Plain foraminifera. She was the first female geologist hired as an employee at a petroleum company, although women had previously consulted for the industry.

Early life and education Helen Jeanne Skewes was born on the 7th of May, 1891 in Muskegon, Michigan in the United States of America. Her father, William J. Skewes and mother, Ella L. Jackson respectively twenty-nine and thirty-one at the time of her birth. The family would later move to Illinois in her younger years where Helen would complete her high school education and develop an interest for natural sciences. Helen Jeanne Skewes graduated from Northwestern University in 1913 with a Bachelor of Science in Geology, a male-dominated field at the time. Her studies and field experiences at Northwestern included training in mapping and analyzing geological formations. Following her graduation, she joined the Illinois Geological Survey, where she applied her academic knowledge to practical mapping projects for industrial purposes across Illinois. Following marriage to Frederick Byron Plummer in 1918, she was known as Helen Jeanne Plummer. In 1925, Plummer returned to Northwestern University to pursue a Master’s degree in Geology, focusing on micropaleontology. By analyzing foraminiferal assemblages, she provided insights into the stratigraphy of the Gulf Coast, particularly in Texas and Louisiana.

Life and career Following her degree, in 1914 Plummer found work at the Illinois Geological Survey before moving to Tulsa where in 1917 she was employed by the Roxana Petroleum Company, a subsidiary of the Shell Oil Company. This made her one of the first women to hold a full-time position with an oil company. Plummer left her position at the Roxana Petroleum Company following her marriage to a colleage at the company. Despite this, she continued to engage in independent research and consulting work. Plummer collaborated with some prominent figures such as Alva Ellisor, Hedwig Kniker, and Esther Applin in developing methods to utilize microfossil data in petroleum geology. Plummer moved countries a few times to follow her husband Frederick Plummer for his career. However, she still involved herself in geology through her husband, working with Fredrick as an occasional staff member at the University of Texas; particularly, by illustrating and editing for a map he was working on. Plummer was not credited by her husband for the work she did for him. Following Fredrick's passing in 1947, Plummer became a regular staff member of the University of Texas Bureau of Economic Geology helping establish a micropaleontological laboratory during her time there. She also became a member of the American Association of Petroleum Geologists. Plummer used many research materials in her career that include sediment samples, locality cards, forum slides, species ID cards, and forams. Plummer worked with the University of Texas Bureau of Economic Geology in 1933 and published a research paper about new species of forams that included samples and slides.

Legacy Rugotruncana skewesae, a fossil published in “Taxonomy of the Globotruncanidae. Eclogae Geologicae Helvetiae” by Bronnimann, P., and Brown, N.K. is named after Helen Jeanne Skewes Plummer. Plummer had a display dedicated to her at the Museum of the Earth Daring to Dig exhibit in 2021, containing several sediment samples and information regarding Foram. Plummer’s collection of sediment samples spanned 3,500 localities and over 1,200 slides, the collection was left to the Paleontological Research Institution. Plummer’s most notable work was in the study of foraminifera of the Cretaceous and the Paleocene.

References

Worked examples

Example 1 — a first encounter with Helen Jeanne Skewes Plummer

Start with the simplest possible case. Write down what Helen Jeanne Skewes Plummer claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, 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 Helen Jeanne Skewes Plummer 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 Helen Jeanne Skewes Plummer 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 Helen Jeanne Skewes Plummer

In research: Helen Jeanne Skewes Plummer appears in earth science 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 Helen Jeanne Skewes Plummer 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: Helen Jeanne Skewes Plummer is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1891 births, 1951 deaths, 20th-century American geologists, so understanding it makes those chapters shorter.
In everyday life: Look for Helen Jeanne Skewes Plummer 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 Helen Jeanne Skewes Plummer in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Helen Jeanne Skewes Plummer 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 Helen Jeanne Skewes Plummer out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Helen Jeanne Skewes Plummer in simple terms?

Why does Helen Jeanne Skewes Plummer matter?

Because it connects several earth science 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 Helen Jeanne Skewes Plummer?

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 Helen Jeanne Skewes Plummer.