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Introduction to stable isotope biogeochemistry, including kinetic and thermodynamic fractionation of stable isotopes during evapo-precipitation, photosynthesis, and biogenic calcification. Applications of stable isotope in environmental sciences, Quarternary geology, paleoclimate, archeology. Introduction to mass spectrometry, cosmogenic and radiogenic isotopes and their application in paleoclimatology/paleoceanography.

Prerequisites: Chemistry 1C; Mathematics 2A or 3A; Earth 2 or 3 or 4.

4

Units

Optional

Grading

1, 2, 3

Passtime

None

Level Limit

Letters and science

College
WELDEAB S
Syee Weldeab
3.3
7 reviews
PSB-S2712
R
10:00 AM - 10:50 AM
25 / 25 Full

Spring 2025 . Weldeab S
WEBB 1025
M W
09:30 AM - 10:45 AM
See All
EARTH 124I Weldeab S Spring 2025 Total: 11
EARTH 124I Weldeab S Spring 2024 Total: 22
See All
7
3.3
EARTH105 . Weldeab S 8 Months Ago

Earth 105 is a very test heavy class so if you are not a good test taker then you probably are not going to do that well. I also am not a fan of iclicker due to the numerous technical difficulties. Nevertheless he is a nice and approachable teacher who clearly cares about his students.

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EARTH124 . Weldeab S 8 Months Ago

Great info dense slides. Uses many examples but the concepts are relatively intuitive. Go to section — it will reinforce your learning. Syee can be a bit blunt but he is not unfair; he values his students understanding.

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EARTH124 . Weldeab S 1 Year, 2 Days Ago

In EARTH 105 He obviously knows a lot of information, but seems to be annoyed if you don't understand the material. It is very hard to understand the lectures and little details matter. If you miss lectures you're screwed and the quizes hold a ton of weight in the class. This is definitely not an easy course and i wish i took something else.

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EARTH124 . Weldeab S 1 Year, 6 Months Ago

Prof. Weldeab is very direct which can be off-putting for some people. That said, he really does care about his students understanding the material, and made stable isotopes fascinating. Doesn't take attendance but since his slideshows are mostly just graphs, you need to be there to get the concepts. Very light homework load

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EARTH8 . Weldeab S 3 Years Ago

Took his honors seminar class this semester (by accident) about environmentalism and climate warming/geology. He took time to meet with every single student for the final project and make pre-made presentations for each topic. Great professor-- passionate about his topic, ended up loving the class :)

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EARTH8 . Weldeab S 3 Years Ago

Earth 124I He tests you on obscure material that he "mentioned" once. Lectures are confusing, he is not helpful in office hours, and he is frankly condescending. The content of biogeochemical isotopes is fascinating but I would never take a class with him. He should not be a professor with the lack of respect and disregard he has for his students.

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See all 7 reviews
EARTH 106
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EARTH 117
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