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Your Name _________________________________
Point values for each question are given. Total points = 40. Please be concise and to-the-point, writing one-to-two sentences for the short answers and one-to-two paragraphs for the long answers.
Using this figure, answer the questions that follow.
(4) Which archive (location and type) is this data from? What is actually being measured, and which standard is used for these measurements?
(4) Why do the data show more negative 18O values during the coldest times?
(4) What specific name(s) describe the event(s) in the gray box, and how is it related to the general pattern?
(4) Describe the two warmest intervals in the record and how they relate to each other.
(4) Why does the record only extend to ~125 ka b2k?
(4) What is the general name for the many spikey events during the “Last Glacial?” What is the origin of this name?
(8) Describe the leading hypothesis developed to explain the origin of the spikey events and how that hypothesis connects different earth system processes.
(8) Give an example of how these kinds of events are recorded in a different geological 18O archive, and explain how your example is connected in terms of climate processes to the record shown in the figure. Explain, using numerical reasoning, any similarities or differences in how 18O variations are recorded in the archive you choose to describe.
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